diff --git a/CODEOWNERS b/CODEOWNERS
new file mode 100644
index 0000000..5032ddd
--- /dev/null
+++ b/CODEOWNERS
@@ -0,0 +1,2 @@
+# These members will be default reviewers for each repo
+* @IgorTodorovskiIBM @MikeFultonDev @DevonianTeuchter @HarithaIBM @v1gnesh
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..f133ac6
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,74 @@
+# Contributing
+
+## Issues
+
+Log an issue for any question or problem you might have. When in doubt, log an issue, and
+any additional policies about what to include will be provided in the responses. The only
+exception is security disclosures which should be sent privately.
+
+Committers may direct you to another repository, ask for additional clarifications, and
+add appropriate metadata before the issue is addressed.
+
+## Contributions
+
+Any change to resources in this repository must be through pull requests. This applies to all changes
+to documentation, code, binary files, etc.
+
+No pull request can be merged without being reviewed and approved.
+
+## Validate your changes
+
+Verify that the project is working by running `zopen build`.
+
+## Coding Guidelines
+
+When contributing your changes, please follow the following coding guidelines:
+* patches: patches should adhere to the coding guidelines from the original project repository. Make sure to add the original project's LICENSE file within the patches
+directory.
+* zopen framework files: (e.g. buildenv) - It is recommended that you follow the [Google Shell Style Guide](https://google.github.io/styleguide/shellguide.html)
+
+If you are generating a new project, we recommend that you use `zopen generate` to create the correct zopen file and directory structure.
+
+### Commit message
+
+A good commit message should describe what changed and why.
+
+It should:
+ * contain a short description of the change
+ * be entirely in lowercase with the exception of proper nouns, acronyms, and the words that refer to code, like function/variable names
+ * be prefixed with one of the following words:
+ * fix: bug fix
+ * hotfix: urgent bug fix
+ * feat: new or updated feature
+ * docs: documentation updates
+ * refactor: code refactoring (no functional change)
+ * perf: performance improvement
+ * test: tests and CI updates
+
+### Developer's Certificate of Origin 1.1
+
+
+By making a contribution to this project, I certify that:
+
+ (a) The contribution was created in whole or in part by me and I
+ have the right to submit it under the open source license
+ indicated in the file; or
+
+ (b) The contribution is based upon previous work that, to the best
+ of my knowledge, is covered under an appropriate open source
+ license and I have the right under that license to submit that
+ work with modifications, whether created in whole or in part
+ by me, under the same open source license (unless I am
+ permitted to submit under a different license), as indicated
+ in the file; or
+
+ (c) The contribution was provided directly to me by some other
+ person who certified (a), (b) or (c) and I have not modified
+ it.
+
+ (d) I understand and agree that this project and the contribution
+ are public and that a record of the contribution (including all
+ personal information I submit with it, including my sign-off) is
+ maintained indefinitely and may be redistributed consistent with
+ this project or the open source license(s) involved.
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
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+ Notwithstanding the above, nothing herein shall supersede or modify
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+ 6. Trademarks. This License does not grant permission to use the trade
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+ 8. Limitation of Liability. In no event and under no legal theory,
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+ unless required by applicable law (such as deliberate and grossly
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+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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diff --git a/README.md b/README.md
index 4e81fa0..d158e25 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,49 @@
# postgresport
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions
+
+## Invoking the postgresql database
+With the current implementation we can invoke the postgresql database in the following way, execute the commands from the --prefix path
+1. Initializing the database cluster
+ `$ bin/initdb -D mydb`
+2. Change the `io_method` parameter(in file mydb/postgresql.conf) to `sync` from `worker`
+3. Execute the postgres command in single user mode
+ `$ bin/postgres --single -D tempdb postgres`
+4. This is prompt us a interactive terminal to execute SQL commands
+```
+backend> CREATE TABLE test_table (id INT, name TEXT);
+backend>
+backend> INSERT INTO test_table VALUES (1, 'Alice'), (2, 'Bob');
+backend> SELECT * FROM test_table
+ 1: id (typeid = 23, len = 4, typmod = -1, byval = t)
+ 2: name (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+ 1: id = "1" (typeid = 23, len = 4, typmod = -1, byval = t)
+ 2: name = "Alice" (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+ 1: id = "2" (typeid = 23, len = 4, typmod = -1, byval = t)
+ 2: name = "Bob" (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+backend> SELECT current_database();
+ 1: current_database (typeid = 19, len = 64, typmod = -1, byval = f)
+ ----
+ 1: current_database = "template1" (typeid = 19, len = 64, typmod = -1, byval = f)
+ ----
+backend> SELECT version();
+ 1: version (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+ 1: version = "PostgreSQL 18beta1 on i370-ibm-openedition, compiled by C/C++ for Open Enterprise Languages on z/OS 2.0.0, clang version 14.0.0 (build 985f418), 64-bit" (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+backend> SELECT pg_backend_pid();
+ 1: pg_backend_pid (typeid = 23, len = 4, typmod = -1, byval = t)
+ ----
+ 1: pg_backend_pid = "2160" (typeid = 23, len = 4, typmod = -1, byval = t)
+ ----
+backend> SHOW work_mem;
+ 1: work_mem (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+ 1: work_mem = "4MB" (typeid = 25, len = -1, typmod = -1, byval = f)
+ ----
+backend> SELECT * FROM non_existent_table;
+ 2025-07-23 09:30:04.641 EDT [2160] ERROR: relation "non_existent_table" does not exist at character 15
+ 2025-07-23 09:30:04.641 EDT [2160] STATEMENT: SELECT * FROM non_existent_table;
+```
diff --git a/buildenv b/buildenv
new file mode 100644
index 0000000..d57916e
--- /dev/null
+++ b/buildenv
@@ -0,0 +1,184 @@
+# Update bump details accordingly. Use bump check to confirm.
+# bump: postgres-version /POSTGRES_VERSION="(.*)"/ https://github.com/postgres/postgres.git|semver:*
+# POSTGRES_VERSION="V.R.M" # Specify a stable release
+export ZOPEN_STABLE_TAG="REL_18_BETA2"
+export ZOPEN_DEV_TAG="REL_18_BETA1"
+
+###
+### Build control file for the postgres port
+###
+
+###
+### Required Environment Variables
+###
+
+## Specify the default build line, either 'DEV' or 'STABLE' (default: STABLE)
+export ZOPEN_BUILD_LINE="DEV"
+
+## Required IF ZOPEN_BUILD_LINE='STABLE'
+export ZOPEN_STABLE_URL="" # Specify the stable build URL (either git or tarball)
+export ZOPEN_STABLE_DEPS="curl git make m4 perl autoconf automake help2man texinfo xz zlib openssl expat gettext gzip tar coreutils zoslib diffutils ncurses bash sed libpcre2 tar check_python gawk" # Specify the stable build dependencies.
+
+## Required IF ZOPEN_BUILD_LINE='DEV'
+export ZOPEN_DEV_URL="https://github.com/postgres/postgres.git" # Specify the dev build URL
+export ZOPEN_DEV_DEPS="curl git make m4 perl autoconf automake help2man texinfo xz zlib openssl expat gettext gzip tar coreutils zoslib diffutils ncurses bash sed libpcre2 tar check_python gawk pkgconfig bison flex" # Specify the dev build dependencies
+
+## Specify a space-delimited list of applicable categories.
+## See tool_categories.txt for valid options
+export ZOPEN_CATEGORIES="database"
+
+## Runtime zopen tool dependencies to be installed alongside the tool.
+export ZOPEN_RUNTIME_DEPS="zlib libxml2 libxslt lz4 systemd tcl python perl"
+
+## Runtime system prerequisites; supply the name of the system pre-requisties.
+## Current available prerequisites: zos24 zos25 zos31 procfs (see https://github.com/zopencommunity/meta/blob/main/include/prereq.sh for a current list)
+export ZOPEN_SYSTEM_PREREQ=""
+
+
+###
+### Build stage control environment variables
+###
+
+#export ZOPEN_BOOTSTRAP="skip" ## Bootstrap program to run (defaults to './bootstrap')
+#export ZOPEN_CHECK="skip" ## Check program to run (defaults to 'make')
+#export ZOPEN_CONFIGURE="skip" ## Configuration program to run (defaults to './configure')
+#export ZOPEN_INSTALL="skip" ## Installation program to run (defaults to 'make')
+#export ZOPEN_MAKE="skip" ## Build program to run (defaults to 'make')
+#export ZOPEN_CLEAN="" ## Clean up program to run (defaults to 'make')
+
+
+###
+### Required user-supplied functions
+###
+
+zopen_check_results()
+{
+ dir="$1"
+ pfx="$2"
+ chk="$1/$2_check.log"
+
+ # Echo the following information to gauge build health
+ echo "actualFailures:0"
+ echo "totalTests:1"
+ echo "expectedFailures:0"
+ echo "expectedTotalTests:1"
+}
+
+zopen_get_version()
+{
+ # Modify to echo the version of your tool/library
+ # Rather than hardcoding the version, obtain the version by running the tool/library
+ echo "1.0.0"
+}
+
+
+###
+### Optional user-supplied functions for zopen-build
+###
+
+#zopen_append_to_env() {
+ ## This function runs as part of generation of the .env file. The output of the
+ ## function is appended to .env.
+#}
+
+#zopen_append_to_setup(){
+ ## This function runs as part of generation of the setup.sh file. The output of
+ ## the function is appended to setup.sh.
+#}
+
+#zopen_append_to_validate_install(){
+ ## This function runs as part of generation of the install_test.sh file. The
+ ## output of the function is appended to install_test.sh script.
+#}
+
+#zopen_install_caveats(){
+ ## This function is run post install. All stdout messages are captured and
+ ## added to the metadata.json as installation caveats.
+#}
+
+#zopen_append_to_zoslib_env(){
+ ## This function runs as part of generation of the C function zoslib_env_hook,
+ ## which can be used to set environment variables before main is run.
+#}
+
+#zopen_init(){
+ ## This function runs after code is downloaded and patched but before the code
+ ## is built.
+#}
+
+#zopen_post_buildenv(){
+ ## This function runs after the 'buildenv' is processed.
+#}
+
+#zopen_pre_build(){
+ ## This function runs before the 'make' step of the build is run.
+#}
+
+#zopen_pre_check(){
+ ## This function runs before the 'check' step of the build is run.
+#}
+
+#zopen_pre_configure(){
+ ## This function runs before the 'configure' step of the build is run.
+#}
+
+#zopen_pre_install(){
+ ## This function runs before the 'install' step of the build is run.
+#}
+
+#zopen_post_install(){
+ ## This function runs after the 'install' step of the build is run.
+#}
+
+#zopen_pre_patch(){
+ ## This function runs before the 'patch' step of the build is run.
+#}
+
+#zopen_pre_terminate(){
+ ## This function runs before 'zopen build' terminates.
+#}
+
+
+###
+### Optional build control variables
+###
+
+export ZOPEN_EXTRA_CFLAGS="-mzos-target=zosv3r1 -DO_CLOEXEC=0 -UZOSLIB_USE_CLIB_LOCALE -D_OPEN_SYS_IF_EXT -fvisibility=default -O0 -g" ## C compiler flags to append to CFLAGS (defaults to '').
+export ZOPEN_EXTRA_CPPFLAGS="-ferror-limit=1000 -fPIC -m64" ## C,C++ pre-processor flags to append to CPPFLAGS (defaults to '')
+export ZOPEN_EXTRA_CXXFLAGS="-fPIC -m64" ## C++ compiler flags to append to CXXFLAGS (defaults to '')
+#export ZOPEN_EXTRA_LDFLAGS="" ## C,C++ linker flags to append to LDFLAGS (defaults to '')
+#export ZOPEN_EXTRA_LIBS="" ## C,C++ libraries to append to LIBS (defaults to '')
+#export ZOPEN_BOOTSTRAP_OPTS="" ## Options to pass to bootstrap program (defaults to '')
+#export ZOPEN_CHECK_MINIMAL="" ## Check program will not be passed CFLAGS, LDFLAGS, CPPFLAGS options but will get them from env vars.
+#export ZOPEN_CHECK_OPTS="" ## Options to pass to check program (defaults to 'check')
+#export ZOPEN_CHECK_TIMEOUT="" ## Timeout limit in seconds for the check program (defaults to '12600' # 3.5 hours)
+#export ZOPEN_CLEAN_OPTS="" ## Options to pass to clean up program (defaults to 'clean')
+#export ZOPEN_CONFIGURE_MINIMAL="" ## Configuration program will not be passed CFLAGS, LDFLAGS, CPPFLAGS options but will get them from env vars.
+export ZOPEN_CONFIGURE_OPTS="--prefix=/home/sravani/postgresbin --without-icu --without-readline --disable-rpath --enable-debug" ## Options to pass to configuration program (defaults to '--prefix=')
+export ZOPEN_EXTRA_CONFIGURE_OPTS="--with-template=linux" ## Extra configure options to pass to configuration program. (defaults to '')
+#export ZOPEN_INSTALL_OPTS="" ## Options to pass to installation program (defaults to 'install')
+#export ZOPEN_MAKE_MINIMAL="" ## Build program will not be passed CFLAGS, LDFLAGS, CPPFLAGS options but will get them from env vars.
+#export ZOPEN_MAKE_OPTS="" ## Options to pass to build program (defaults to '-j')
+#export ZOPEN_PATCH_DIR="" ## Specify directory from which patches should be applied.
+
+
+###
+### Restricted Usage - only set in ports if necessary
+###
+
+## Don't add zoslib as a dependency; most ports should keep this unset
+#export ZOPEN_DONT_ADD_ZOSLIB_DEP=1
+
+
+###
+### Additional user-defined custom code - runs during script source
+###
+
+## Add user-defined functions and code
+zopen_pre_patch()
+{
+# if [ "${ZOPEN_BUILD_LINE}x" = "DEVx" ]; then
+ export CFLAGS="${CFLAGS} -UZOSLIB_USE_CLIB_LOCALE"
+ export CPPFLAGS="${CPPFLAGS} -UZOSLIB_USE_CLIB_LOCALE"
+# fi
+}
diff --git a/cicd-dev.groovy b/cicd-dev.groovy
new file mode 100644
index 0000000..aaa3d3f
--- /dev/null
+++ b/cicd-dev.groovy
@@ -0,0 +1,14 @@
+node('linux')
+{
+ stage ('Poll') {
+ checkout([
+ $class: 'GitSCM',
+ branches: [[name: '*/main']],
+ doGenerateSubmoduleConfigurations: false,
+ extensions: [],
+ userRemoteConfigs: [[url: 'https://github.com/zopencommunity/postgresport.git']]])
+ }
+ stage('Build') {
+ build job: 'Port-Pipeline', parameters: [string(name: 'PORT_GITHUB_REPO', value: 'https://github.com/zopencommunity/postgresport.git'), string(name: 'PORT_DESCRIPTION', value: 'advanced rdbms' ), string(name: 'BUILD_LINE', value: 'DEV') ]
+ }
+}
diff --git a/cicd-stable.groovy b/cicd-stable.groovy
new file mode 100644
index 0000000..3b8046a
--- /dev/null
+++ b/cicd-stable.groovy
@@ -0,0 +1,14 @@
+node('linux')
+{
+ stage ('Poll') {
+ checkout([
+ $class: 'GitSCM',
+ branches: [[name: '*/main']],
+ doGenerateSubmoduleConfigurations: false,
+ extensions: [],
+ userRemoteConfigs: [[url: 'https://github.com/zopencommunity/postgresport.git']]])
+ }
+ stage('Build') {
+ build job: 'Port-Pipeline', parameters: [string(name: 'PORT_GITHUB_REPO', value: 'https://github.com/zopencommunity/postgresport.git'), string(name: 'PORT_DESCRIPTION', value: 'advanced rdbms' ), string(name: 'BUILD_LINE', value: 'STABLE') ]
+ }
+}
diff --git a/patches/LICENSE b/patches/LICENSE
new file mode 100644
index 0000000..670baeb
--- /dev/null
+++ b/patches/LICENSE
@@ -0,0 +1,2 @@
+"The Unlicense"
+View license contents at "https://api.github.com/licenses/unlicense"
diff --git a/patches/Makefile_common_patch.patch b/patches/Makefile_common_patch.patch
new file mode 100644
index 0000000..79f938b
--- /dev/null
+++ b/patches/Makefile_common_patch.patch
@@ -0,0 +1,13 @@
+diff --git a/src/backend/access/common/Makefile b/src/backend/access/common/Makefile
+index e78de312659..637fd251859 100644
+--- a/src/backend/access/common/Makefile
++++ b/src/backend/access/common/Makefile
+@@ -29,6 +29,7 @@ OBJS = \
+ toast_compression.o \
+ toast_internals.o \
+ tupconvert.o \
+- tupdesc.o
++ tupdesc.o \
++ file.o
+
+ include $(top_srcdir)/src/backend/common.mk
diff --git a/patches/Makefile_global_in_patch.patch b/patches/Makefile_global_in_patch.patch
new file mode 100644
index 0000000..d6342db
--- /dev/null
+++ b/patches/Makefile_global_in_patch.patch
@@ -0,0 +1,14 @@
+diff --git a/src/Makefile.global.in b/src/Makefile.global.in
+index 04952b533de..15a77f6c0ad 100644
+--- a/src/Makefile.global.in
++++ b/src/Makefile.global.in
+@@ -789,7 +789,8 @@ LIBOBJS = @LIBOBJS@
+ # files needed for the chosen CRC-32C implementation
+ PG_CRC32C_OBJS = @PG_CRC32C_OBJS@
+
+-LIBS := -lpgcommon -lpgport $(LIBS)
++#LIBS := -lpgcommon -lpgport $(LIBS)
++LIBS := -L$(top_builddir)/src/common -lpgcommon -L$(top_builddir)/src/common -lpgcommon_shlib -L$(top_builddir)/src/common -lpgcommon_srv -L$(top_builddir)/src/port -lpgport -L$(top_builddir)/src/port -lpgport_shlib -L$(top_builddir)/src/port -lpgport_srv -lzoslib -lzoslib-supp -lz
+
+ # to make ws2_32.lib the last library
+ ifeq ($(PORTNAME),win32)
diff --git a/patches/Makefile_shlib_patch.patch b/patches/Makefile_shlib_patch.patch
new file mode 100755
index 0000000..a20a031
--- /dev/null
+++ b/patches/Makefile_shlib_patch.patch
@@ -0,0 +1,53 @@
+diff --git a/src/Makefile.shlib b/src/Makefile.shlib
+index fa81f6f..e58220e 100644
+--- a/src/Makefile.shlib
++++ b/src/Makefile.shlib
+@@ -183,6 +183,13 @@ ifeq ($(PORTNAME), linux)
+ endif
+ endif
+
++ifeq ($(PORTNAME), zos)
++ LINK.shared = $(COMPILER)
++ ifdef SHLIB_EXPORTS
++ exports_file = $(SHLIB_EXPORTS:%.txt=%.x)
++ endif
++endif
++
+ ifeq ($(PORTNAME), solaris)
+ LINK.shared = $(COMPILER) -shared
+ ifdef soname
+@@ -256,9 +263,32 @@ endif #haslibarule
+
+ ifeq (,$(filter cygwin win32,$(PORTNAME)))
+
++ifeq ($(PORTNAME), zos)
++# get all the objfiles.txt in $(top_srcdir)/src/
++OBJFILES_TXT=$(shell find $(top_srcdir)/src/ -name objfiles.txt)
++
++# remove any newlines or tabs in the objfiles.txt files
++FORMATED_OBJFILES_TXT=$(strip \
++ $(foreach file,$(OBJFILES_TXT), \
++ $(shell tr ' \t\r\n' '\n\n\n\n' < $(file) | awk 'NF') \
++ ) \
++)
++
++# combile all the object files names
++ALL_OBJFILES_TXT=$(foreach obj,$(OBJS_NEW),$(top_builddir)/$(obj))
++
++# this target will create a file allobjfiles.txt in teh $(top_srcdir)
++# which contains all the object files from all the subdirectories in
++# $(top_srcdir)/src/
++allobjfiles.txt:
++ @if [ ! -f allobjfiles.txt ]; then \
++ echo $(ALL_OBJFILES_TXT) > $(top_srcdir)/allobjfiles.txt; \
++ fi
++endif
++
+ # Normal case
+-$(shlib): $(OBJS) | $(SHLIB_PREREQS)
+- $(LINK.shared) -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK)
++$(shlib): $(OBJS) | $(SHLIB_PREREQS) allobjfiles.txt
++ $(LINK.shared) -o $@ $(OBJS) @$(top_srcdir)/allobjfiles.txt $(LIBS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(SHLIB_LINK_INTERNAL) -Wl,-bMSGLEVEL=8
+ ifdef shlib_major
+ # If we're using major and minor versions, then make a symlink to major-version-only.
+ ifneq ($(shlib), $(shlib_major))
diff --git a/patches/Makefile_zos_patch.patch b/patches/Makefile_zos_patch.patch
new file mode 100755
index 0000000..ec71561
--- /dev/null
+++ b/patches/Makefile_zos_patch.patch
@@ -0,0 +1,27 @@
+diff --git a/src/makefiles/Makefile.zos b/src/makefiles/Makefile.zos
+new file mode 100755
+index 00000000000..269314232d6
+--- /dev/null
++++ b/src/makefiles/Makefile.zos
+@@ -0,0 +1,17 @@
++# Use --enable-new-dtags to generate DT_RUNPATH instead of DT_RPATH.
++# This allows LD_LIBRARY_PATH to still work when needed.
++rpath = -Wl,-rpath,'$(rpathdir)',--enable-new-dtags
++
++OBJFILES_TXT=$(shell find $(top_builddir)/src/ -name objfiles.txt)
++OBJS_NEW=$(strip \
++ $(foreach file,$(OBJFILES_TXT), \
++ $(shell tr ' \t\r\n' '\n\n\n\n' < $(file) | awk 'NF') \
++ ) \
++)
++OBJS_NEW_1=$(foreach obj,$(OBJS_NEW),$(top_builddir)/$(obj))
++allobjfiles.txt:
++ @if [ ! -f allobjfiles.txt ]; then \
++ echo $(OBJS_NEW_1) > $(top_srcdir)/allobjfiles.txt; \
++ fi
++ # OBJS+=$(OBJS_NEW_1)
++#
++# Rule for building a shared library from a single .o file
++%.so: %.o
++ $(CC) $(CFLAGS) $(OBJS) @$(top_srcdir)/allobjfiles.txt $< $(LDFLAGS) $(LIBS) $(LDFLAGS_SL) -shared -o $@ -Wl,-bMSGLEVEL=8
++
diff --git a/patches/chklocale_patch.patch b/patches/chklocale_patch.patch
new file mode 100644
index 0000000..d80bf57
--- /dev/null
+++ b/patches/chklocale_patch.patch
@@ -0,0 +1,17 @@
+diff --git a/src/port/chklocale.c b/src/port/chklocale.c
+index 034939f7fd2..6e36b2ae16a 100644
+--- a/src/port/chklocale.c
++++ b/src/port/chklocale.c
+@@ -322,8 +322,11 @@ pg_get_encoding_from_locale(const char *ctype, bool write_message)
+ loc = newlocale(LC_CTYPE_MASK, ctype, (locale_t) 0);
+ if (loc == (locale_t) 0)
+ return -1; /* bogus ctype passed in? */
+-
++#ifndef __MVS__
+ sys = nl_langinfo_l(CODESET, loc);
++#else
++ sys = nl_langinfo(CODESET);
++#endif
+ if (sys)
+ sys = strdup(sys);
+
diff --git a/patches/configure_patch.patch b/patches/configure_patch.patch
new file mode 100644
index 0000000..685e50d
--- /dev/null
+++ b/patches/configure_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/configure b/configure
+index 6d7c22e153f..e1c9925036e 100755
+--- a/configure
++++ b/configure
+@@ -3028,6 +3028,7 @@ dragonfly*) template=netbsd ;;
+ freebsd*) template=freebsd ;;
+ linux*|gnu*|k*bsd*-gnu)
+ template=linux ;;
++ openedition*) template=zos ;;
+ mingw*) template=win32 ;;
+ netbsd*) template=netbsd ;;
+ openbsd*) template=openbsd ;;
diff --git a/patches/date_c_patch.patch b/patches/date_c_patch.patch
new file mode 100644
index 0000000..40397df
--- /dev/null
+++ b/patches/date_c_patch.patch
@@ -0,0 +1,15 @@
+diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c
+index 4227ab1..0ed9e01 100644
+--- a/src/backend/utils/adt/date.c
++++ b/src/backend/utils/adt/date.c
+@@ -37,6 +37,10 @@
+ #include "utils/skipsupport.h"
+ #include "utils/sortsupport.h"
+
++#ifdef __MVS__
++#define tzname _tzname
++#endif
++
+ /*
+ * gcc's -ffast-math switch breaks routines that expect exact results from
+ * expressions like timeval / SECS_PER_HOUR, where timeval is double.
diff --git a/patches/dsm_impl_c_patch.patch b/patches/dsm_impl_c_patch.patch
new file mode 100644
index 0000000..c47736a
--- /dev/null
+++ b/patches/dsm_impl_c_patch.patch
@@ -0,0 +1,44 @@
+diff --git a/src/backend/storage/ipc/dsm_impl.c b/src/backend/storage/ipc/dsm_impl.c
+index 6bf8ab5bb5b..88d2f0e9783 100644
+--- a/src/backend/storage/ipc/dsm_impl.c
++++ b/src/backend/storage/ipc/dsm_impl.c
+@@ -254,7 +254,7 @@ dsm_impl_posix(dsm_op op, dsm_handle handle, Size request_size,
+ * ReserveExternalFD rather than AcquireExternalFD, though.
+ */
+ ReserveExternalFD();
+-
++#if defined(HAVE_SHM_OPEN) && !defined(__MVS__)
+ flags = O_RDWR | (op == DSM_OP_CREATE ? O_CREAT | O_EXCL : 0);
+ if ((fd = shm_open(name, flags, PG_FILE_MODE_OWNER)) == -1)
+ {
+@@ -266,7 +266,29 @@ dsm_impl_posix(dsm_op op, dsm_handle handle, Size request_size,
+ name)));
+ return false;
+ }
+-
++#endif
++#if defined(__MVS__)
++ /* On z/OS, test for System V shared memory availability */
++ int shmid;
++ void *addr;
++ shmid = shmget(IPC_PRIVATE, 4096, IPC_CREAT | IPC_EXCL | 0600);
++ if (shmid != -1)
++ {
++ addr = shmat(shmid, NULL, 0);
++ if (addr != (void *) -1)
++ {
++ shmdt(addr);
++ shmctl(shmid, IPC_RMID, NULL);
++ // return "sysv";
++ return false;
++ }
++ else
++ {
++ shmctl(shmid, IPC_RMID, NULL);
++ return true;
++ }
++ }
++#endif
+ /*
+ * If we're attaching the segment, determine the current size; if we are
+ * creating the segment, set the size to the requested value.
diff --git a/patches/fd_c_patch.patch b/patches/fd_c_patch.patch
new file mode 100644
index 0000000..d9baea3
--- /dev/null
+++ b/patches/fd_c_patch.patch
@@ -0,0 +1,16 @@
+diff --git a/src/backend/storage/file/fd.c b/src/backend/storage/file/fd.c
+index 0e8299d..02e62a6 100644
+--- a/src/backend/storage/file/fd.c
++++ b/src/backend/storage/file/fd.c
+@@ -485,7 +485,11 @@ pg_fdatasync(int fd)
+ return 0;
+
+ retry:
++#ifndef __MVS__
+ rc = fdatasync(fd);
++#else
++ rc = fsync(fd);
++#endif
+
+ if (rc == -1 && errno == EINTR)
+ goto retry;
diff --git a/patches/file_c_patch.patch b/patches/file_c_patch.patch
new file mode 100644
index 0000000..36d4ff8
--- /dev/null
+++ b/patches/file_c_patch.patch
@@ -0,0 +1,76 @@
+diff --git a/src/backend/access/common/file.c b/src/backend/access/common/file.c
+new file mode 100755
+index 00000000000..1d7eb32716e
+--- /dev/null
++++ b/src/backend/access/common/file.c
+@@ -0,0 +1,70 @@
++#undef ZOSLIB_USE_CLIB_LOCALE
++#include
++#include
++#include
++#include
++int isalnum_l(int c, locale_t locale) { return isalnum(c); }
++int isalpha_l(int c, locale_t locale) { return isalpha(c); }
++int isdigit_l(int c, locale_t locale) { return isdigit(c); }
++int isgraph_l(int c, locale_t locale) { return isgraph(c); }
++int islower_l(int c, locale_t locale) { return islower(c); }
++int isprint_l(int c, locale_t locale) { return isprint(c); }
++
++int ispunct_l(int c, locale_t locale) { return ispunct(c); }
++int isspace_l(int c, locale_t locale) { return isspace(c); }
++int isupper_l(int c, locale_t locale) { return isupper(c); }
++
++int iswalnum_l(wchar_t wc, locale_t locale) {
++ return iswalnum(wc);
++}
++int iswalpha_l(wchar_t wc, locale_t locale) {
++ return iswalpha(wc);
++}
++int iswblank_l(wchar_t wc, locale_t locale) {
++ return iswblank(wc);
++}
++int iswlower_l(wchar_t wc, locale_t locale) {
++ return iswlower(wc);
++}
++int iswgraph_l(wchar_t wc, locale_t locale) {
++ return iswgraph(wc);
++}
++int iswprint_l(wchar_t wc, locale_t locale) {
++ return iswprint(wc);
++}
++int iswpunct_l(wchar_t wc, locale_t locale) {
++ return iswpunct(wc);
++}
++int iswspace_l(wchar_t wc, locale_t locale) {
++ return iswspace(wc);
++}
++
++int iswupper_l(wchar_t wc, locale_t locale) {
++ return iswupper(wc);
++}
++
++int iswdigit_l(wchar_t wc, locale_t locale) {
++ return iswdigit(wc);
++}
++
++int toupper_l(int c, locale_t locale) { return toupper(c); }
++int tolower_l(int c, locale_t locale) { return tolower(c); }
++
++wint_t towupper_l(wint_t wc, locale_t locale) {
++ return towupper(wc);
++}
++wint_t towlower_l(wint_t wc, locale_t locale) {
++ return towlower(wc);
++}
++int strcoll_l(const char *__s1, const char *__s2,
++ locale_t locale) {
++ return strcoll(__s1, __s2);
++}
++size_t strxfrm_l(char *__s1, const char *__s2, size_t __n,
++ locale_t locale) {
++ return strxfrm(__s1, __s2, __n);
++}
++size_t strftime_l(char *dst, size_t dstlen, const char *format, const struct tm *tm,
++ locale_t locale) {
++ return strftime(dst, dstlen, format, tm);
++}
diff --git a/patches/findtimezone_patch.patch b/patches/findtimezone_patch.patch
new file mode 100644
index 0000000..d586398
--- /dev/null
+++ b/patches/findtimezone_patch.patch
@@ -0,0 +1,15 @@
+diff --git a/src/bin/initdb/findtimezone.c b/src/bin/initdb/findtimezone.c
+index 2b2ae39..5910356 100644
+--- a/src/bin/initdb/findtimezone.c
++++ b/src/bin/initdb/findtimezone.c
+@@ -19,6 +19,10 @@
+
+ #include "pgtz.h"
+
++#ifdef __MVS__
++#define tzname _tzname
++#endif
++
+ /* Ideally this would be in a .h file, but it hardly seems worth the trouble */
+ extern const char *select_default_timezone(const char *share_path);
+
diff --git a/patches/initdb_Makefile_patch.patch b/patches/initdb_Makefile_patch.patch
new file mode 100644
index 0000000..32a96b0
--- /dev/null
+++ b/patches/initdb_Makefile_patch.patch
@@ -0,0 +1,14 @@
+diff --git a/src/bin/initdb/Makefile b/src/bin/initdb/Makefile
+index 997e0a013e9..1f240713970 100644
+--- a/src/bin/initdb/Makefile
++++ b/src/bin/initdb/Makefile
+@@ -23,7 +23,8 @@ include $(top_builddir)/src/Makefile.global
+ override CPPFLAGS := -DUSE_PRIVATE_ENCODING_FUNCS -I$(libpq_srcdir) -I$(top_srcdir)/src/timezone $(ICU_CFLAGS) $(CPPFLAGS)
+
+ # We need libpq only because fe_utils does.
+-LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport) $(ICU_LIBS)
++LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport) -L$(top_srcdir)/src/common -lpgcommon $(ICU_LIBS)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ # use system timezone data?
+ ifneq (,$(with_system_tzdata))
diff --git a/patches/initdb_c_patch.patch b/patches/initdb_c_patch.patch
new file mode 100644
index 0000000..672ba18
--- /dev/null
+++ b/patches/initdb_c_patch.patch
@@ -0,0 +1,13 @@
+diff --git a/src/bin/initdb/initdb.c b/src/bin/initdb/initdb.c
+index 62bbd08d9f6..2d91db8b02d 100644
+--- a/src/bin/initdb/initdb.c
++++ b/src/bin/initdb/initdb.c
+@@ -1075,7 +1075,7 @@ set_null_conf(void)
+ static const char *
+ choose_dsm_implementation(void)
+ {
+-#if defined(HAVE_SHM_OPEN) && !defined(__sun__)
++#if defined(HAVE_SHM_OPEN) && !defined(__sun__) && !defined(__MVS__)
+ int ntries = 10;
+ pg_prng_state prng_state;
+
diff --git a/patches/pg_amcheck_Makefile_patch.patch b/patches/pg_amcheck_Makefile_patch.patch
new file mode 100644
index 0000000..1f111fc
--- /dev/null
+++ b/patches/pg_amcheck_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_amcheck/Makefile b/src/bin/pg_amcheck/Makefile
+index fa6071f97c1..73f3fe6bcfc 100644
+--- a/src/bin/pg_amcheck/Makefile
++++ b/src/bin/pg_amcheck/Makefile
+@@ -20,6 +20,7 @@ include $(top_builddir)/src/Makefile.global
+
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_basebackup_Makefile_patch.patch b/patches/pg_basebackup_Makefile_patch.patch
new file mode 100644
index 0000000..d5e202a
--- /dev/null
+++ b/patches/pg_basebackup_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_basebackup/Makefile b/src/bin/pg_basebackup/Makefile
+index a9557c0789f..2cc04de0938 100644
+--- a/src/bin/pg_basebackup/Makefile
++++ b/src/bin/pg_basebackup/Makefile
+@@ -28,6 +28,7 @@ export GZIP_PROGRAM=$(GZIP)
+
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_checksums_Makefile_patch.patch b/patches/pg_checksums_Makefile_patch.patch
new file mode 100644
index 0000000..ba80042
--- /dev/null
+++ b/patches/pg_checksums_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_checksums/Makefile b/src/bin/pg_checksums/Makefile
+index a7f6d9c7c5c..ddb3b09ef93 100644
+--- a/src/bin/pg_checksums/Makefile
++++ b/src/bin/pg_checksums/Makefile
+@@ -17,6 +17,7 @@ include $(top_builddir)/src/Makefile.global
+
+ # We need libpq only because fe_utils does.
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_combinebackup_Makefile_patch.patch b/patches/pg_combinebackup_Makefile_patch.patch
new file mode 100644
index 0000000..3d29933
--- /dev/null
+++ b/patches/pg_combinebackup_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_combinebackup/Makefile b/src/bin/pg_combinebackup/Makefile
+index 33a1f4483bf..ca8120c9650 100644
+--- a/src/bin/pg_combinebackup/Makefile
++++ b/src/bin/pg_combinebackup/Makefile
+@@ -18,6 +18,7 @@ include $(top_builddir)/src/Makefile.global
+
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_dump_Makefile_patch.patch b/patches/pg_dump_Makefile_patch.patch
new file mode 100644
index 0000000..6f0aad9
--- /dev/null
+++ b/patches/pg_dump_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_dump/Makefile b/src/bin/pg_dump/Makefile
+index fa795883e9f..214cc002bec 100644
+--- a/src/bin/pg_dump/Makefile
++++ b/src/bin/pg_dump/Makefile
+@@ -23,6 +23,7 @@ export with_icu
+
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_resetwal_Makefile_patch.patch b/patches/pg_resetwal_Makefile_patch.patch
new file mode 100644
index 0000000..ad4d875
--- /dev/null
+++ b/patches/pg_resetwal_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_resetwal/Makefile b/src/bin/pg_resetwal/Makefile
+index 82bea06dee5..1c20e9c8089 100644
+--- a/src/bin/pg_resetwal/Makefile
++++ b/src/bin/pg_resetwal/Makefile
+@@ -16,6 +16,7 @@ top_builddir = ../../..
+ include $(top_builddir)/src/Makefile.global
+
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_rewind_Makefile_patch.patch b/patches/pg_rewind_Makefile_patch.patch
new file mode 100644
index 0000000..a1e632e
--- /dev/null
+++ b/patches/pg_rewind_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_rewind/Makefile b/src/bin/pg_rewind/Makefile
+index cbd000b686d..11f25c89737 100644
+--- a/src/bin/pg_rewind/Makefile
++++ b/src/bin/pg_rewind/Makefile
+@@ -17,6 +17,7 @@ include $(top_builddir)/src/Makefile.global
+
+ override CPPFLAGS := -I$(libpq_srcdir) -DFRONTEND $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_test_fsync_c_patch.patch b/patches/pg_test_fsync_c_patch.patch
new file mode 100644
index 0000000..89a804b
--- /dev/null
+++ b/patches/pg_test_fsync_c_patch.patch
@@ -0,0 +1,16 @@
+diff --git a/src/bin/pg_test_fsync/pg_test_fsync.c b/src/bin/pg_test_fsync/pg_test_fsync.c
+index 0060ea1..eb0f049 100644
+--- a/src/bin/pg_test_fsync/pg_test_fsync.c
++++ b/src/bin/pg_test_fsync/pg_test_fsync.c
+@@ -346,7 +346,11 @@ test_sync(int writes_per_op)
+ XLOG_BLCKSZ,
+ writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
+ die("write failed");
++#ifndef __MVS__
+ fdatasync(tmpfile);
++#else
++ fsync(tmpfile);
++#endif
+ }
+ STOP_TIMER;
+ close(tmpfile);
diff --git a/patches/pg_upgrade_Makefile_patch.patch b/patches/pg_upgrade_Makefile_patch.patch
new file mode 100644
index 0000000..4c7bd7a
--- /dev/null
+++ b/patches/pg_upgrade_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_upgrade/Makefile b/src/bin/pg_upgrade/Makefile
+index f83d2b5d309..dceeb77bbd0 100644
+--- a/src/bin/pg_upgrade/Makefile
++++ b/src/bin/pg_upgrade/Makefile
+@@ -31,6 +31,7 @@ OBJS = \
+
+ override CPPFLAGS := -I$(srcdir) -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ # required for 002_pg_upgrade.pl
+ REGRESS_SHLIB=$(abs_top_builddir)/src/test/regress/regress$(DLSUFFIX)
diff --git a/patches/pg_verifybackup_Makefile_patch.patch b/patches/pg_verifybackup_Makefile_patch.patch
new file mode 100644
index 0000000..2d54604
--- /dev/null
+++ b/patches/pg_verifybackup_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_verifybackup/Makefile b/src/bin/pg_verifybackup/Makefile
+index 374d4a8afd1..036cdf5e379 100644
+--- a/src/bin/pg_verifybackup/Makefile
++++ b/src/bin/pg_verifybackup/Makefile
+@@ -19,6 +19,7 @@ include $(top_builddir)/src/Makefile.global
+ # We need libpq only because fe_utils does.
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pg_walsummary_Makefile_patch.patch b/patches/pg_walsummary_Makefile_patch.patch
new file mode 100644
index 0000000..297a5e4
--- /dev/null
+++ b/patches/pg_walsummary_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pg_walsummary/Makefile b/src/bin/pg_walsummary/Makefile
+index 1bc620572d2..ff01fd5365d 100644
+--- a/src/bin/pg_walsummary/Makefile
++++ b/src/bin/pg_walsummary/Makefile
+@@ -18,6 +18,7 @@ include $(top_builddir)/src/Makefile.global
+
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/pgbench_Makefile_patch.patch b/patches/pgbench_Makefile_patch.patch
new file mode 100644
index 0000000..ee8643e
--- /dev/null
+++ b/patches/pgbench_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/pgbench/Makefile b/src/bin/pgbench/Makefile
+index 987bf64df9d..ca39852b407 100644
+--- a/src/bin/pgbench/Makefile
++++ b/src/bin/pgbench/Makefile
+@@ -15,6 +15,7 @@ OBJS = \
+
+ override CPPFLAGS := -I. -I$(srcdir) -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ ifneq ($(PORTNAME), win32)
+ override CFLAGS += $(PTHREAD_CFLAGS)
diff --git a/patches/pgtime_h_patch.patch b/patches/pgtime_h_patch.patch
new file mode 100644
index 0000000..a91b344
--- /dev/null
+++ b/patches/pgtime_h_patch.patch
@@ -0,0 +1,13 @@
+diff --git a/src/include/pgtime.h b/src/include/pgtime.h
+index 5fc9f223de3..a782776f41b 100644
+--- a/src/include/pgtime.h
++++ b/src/include/pgtime.h
+@@ -91,7 +91,7 @@ extern PGDLLIMPORT pg_tz *session_timezone;
+ extern PGDLLIMPORT pg_tz *log_timezone;
+
+ extern void pg_timezone_initialize(void);
+-extern pg_tz *pg_tzset(const char *tzname);
++extern pg_tz *pg_tzset(const char *tzname_);
+ extern pg_tz *pg_tzset_offset(long gmtoffset);
+
+ extern pg_tzenum *pg_tzenumerate_start(void);
diff --git a/patches/pgtz_patch.patch b/patches/pgtz_patch.patch
new file mode 100644
index 0000000..c1734bc
--- /dev/null
+++ b/patches/pgtz_patch.patch
@@ -0,0 +1,59 @@
+diff --git a/src/timezone/pgtz.c b/src/timezone/pgtz.c
+index 671b4d76237..f5a35b1317f 100644
+--- a/src/timezone/pgtz.c
++++ b/src/timezone/pgtz.c
+@@ -231,7 +231,7 @@ init_timezone_hashtable(void)
+ * default timezone setting is later overridden from postgresql.conf.
+ */
+ pg_tz *
+-pg_tzset(const char *tzname)
++pg_tzset(const char *tzname_)
+ {
+ pg_tz_cache *tzp;
+ struct state tzstate;
+@@ -239,7 +239,7 @@ pg_tzset(const char *tzname)
+ char canonname[TZ_STRLEN_MAX + 1];
+ char *p;
+
+- if (strlen(tzname) > TZ_STRLEN_MAX)
++ if (strlen(tzname_) > TZ_STRLEN_MAX)
+ return NULL; /* not going to fit */
+
+ if (!timezone_cache)
+@@ -253,8 +253,8 @@ pg_tzset(const char *tzname)
+ * a POSIX-style timezone spec.)
+ */
+ p = uppername;
+- while (*tzname)
+- *p++ = pg_toupper((unsigned char) *tzname++);
++ while (*tzname_)
++ *p++ = pg_toupper((unsigned char) *tzname_++);
+ *p = '\0';
+
+ tzp = (pg_tz_cache *) hash_search(timezone_cache,
+@@ -321,7 +321,7 @@ pg_tzset_offset(long gmtoffset)
+ {
+ long absoffset = (gmtoffset < 0) ? -gmtoffset : gmtoffset;
+ char offsetstr[64];
+- char tzname[128];
++ char tzname_[128];
+
+ snprintf(offsetstr, sizeof(offsetstr),
+ "%02ld", absoffset / SECS_PER_HOUR);
+@@ -338,13 +338,13 @@ pg_tzset_offset(long gmtoffset)
+ ":%02ld", absoffset);
+ }
+ if (gmtoffset > 0)
+- snprintf(tzname, sizeof(tzname), "<-%s>+%s",
++ snprintf(tzname_, sizeof(tzname_), "<-%s>+%s",
+ offsetstr, offsetstr);
+ else
+- snprintf(tzname, sizeof(tzname), "<+%s>-%s",
++ snprintf(tzname_, sizeof(tzname_), "<+%s>-%s",
+ offsetstr, offsetstr);
+
+- return pg_tzset(tzname);
++ return pg_tzset(tzname_);
+ }
+
+
diff --git a/patches/pl_handler_c_patch.patch b/patches/pl_handler_c_patch.patch
new file mode 100755
index 0000000..2ceecad
--- /dev/null
+++ b/patches/pl_handler_c_patch.patch
@@ -0,0 +1,23 @@
+diff --git a/src/pl/plpgsql/src/pl_handler.c b/src/pl/plpgsql/src/pl_handler.c
+index e9a7292..0931fd7 100644
+--- a/src/pl/plpgsql/src/pl_handler.c
++++ b/src/pl/plpgsql/src/pl_handler.c
+@@ -152,7 +152,9 @@ _PG_init(void)
+
+ if (inited)
+ return;
+-
++// MemoryContextInit();
++// InitializeGUCOptions();
++ build_guc_variables();
+ pg_bindtextdomain(TEXTDOMAIN);
+
+ DefineCustomEnumVariable("plpgsql.variable_conflict",
+@@ -202,6 +204,7 @@ _PG_init(void)
+
+ MarkGUCPrefixReserved("plpgsql");
+
++ MemoryContextInit();
+ RegisterXactCallback(plpgsql_xact_cb, NULL);
+ RegisterSubXactCallback(plpgsql_subxact_cb, NULL);
+
diff --git a/patches/postgres_patch.patch b/patches/postgres_patch.patch
new file mode 100644
index 0000000..87a1d7d
--- /dev/null
+++ b/patches/postgres_patch.patch
@@ -0,0 +1,13 @@
+diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
+index 1ae51b1b391..e3e179fa89e 100644
+--- a/src/backend/tcop/postgres.c
++++ b/src/backend/tcop/postgres.c
+@@ -5110,7 +5110,7 @@ ShowUsage(const char *title)
+ (long) user.tv_usec,
+ (long) sys.tv_sec,
+ (long) sys.tv_usec);
+-#ifndef WIN32
++#if !defined(WIN32) && !defined(__MVS__)
+
+ /*
+ * The following rusage fields are not defined by POSIX, but they're
diff --git a/patches/psql_Makefile_patch.patch b/patches/psql_Makefile_patch.patch
new file mode 100644
index 0000000..76b2d9a
--- /dev/null
+++ b/patches/psql_Makefile_patch.patch
@@ -0,0 +1,12 @@
+diff --git a/src/bin/psql/Makefile b/src/bin/psql/Makefile
+index 5b1545d9948..0cfb5423c75 100644
+--- a/src/bin/psql/Makefile
++++ b/src/bin/psql/Makefile
+@@ -23,6 +23,7 @@ REFDOCDIR= $(top_srcdir)/doc/src/sgml/ref
+
+ override CPPFLAGS := -I. -I$(srcdir) -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
++LIBS+=$(LDFLAGS_INTERNAL)
+
+ OBJS = \
+ $(WIN32RES) \
diff --git a/patches/scripts_Makefile_patch.patch b/patches/scripts_Makefile_patch.patch
new file mode 100644
index 0000000..c4cffec
--- /dev/null
+++ b/patches/scripts_Makefile_patch.patch
@@ -0,0 +1,13 @@
+diff --git a/src/bin/scripts/Makefile b/src/bin/scripts/Makefile
+index f6b4d40810b..ad1ad9c0538 100644
+--- a/src/bin/scripts/Makefile
++++ b/src/bin/scripts/Makefile
+@@ -20,7 +20,7 @@ PROGRAMS = createdb createuser dropdb dropuser clusterdb vacuumdb reindexdb pg_i
+
+ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS)
+ LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport)
+-
++LIBS+=$(LDFLAGS_INTERNAL)
+ all: $(PROGRAMS)
+
+ createdb: createdb.o common.o $(WIN32RES) | submake-libpq submake-libpgport submake-libpgfeutils
diff --git a/patches/sysv_shmem_c_patch.patch b/patches/sysv_shmem_c_patch.patch
new file mode 100644
index 0000000..eb457ac
--- /dev/null
+++ b/patches/sysv_shmem_c_patch.patch
@@ -0,0 +1,62 @@
+diff --git a/src/backend/port/sysv_shmem.c b/src/backend/port/sysv_shmem.c
+index 197926d44f6..448bb36a039 100644
+--- a/src/backend/port/sysv_shmem.c
++++ b/src/backend/port/sysv_shmem.c
+@@ -619,8 +619,12 @@ CreateAnonymousSegment(Size *size)
+ if (allocsize % hugepagesize != 0)
+ allocsize += hugepagesize - (allocsize % hugepagesize);
+
++#ifdef __MVS__
++ ptr = anon_mmap(NULL, allocsize);
++#else
+ ptr = mmap(NULL, allocsize, PROT_READ | PROT_WRITE,
+ PG_MMAP_FLAGS | mmap_flags, -1, 0);
++#endif
+ mmap_errno = errno;
+ if (huge_pages == HUGE_PAGES_TRY && ptr == MAP_FAILED)
+ elog(DEBUG1, "mmap(%zu) with MAP_HUGETLB failed, huge pages disabled: %m",
+@@ -643,8 +647,12 @@ CreateAnonymousSegment(Size *size)
+ * to non-huge pages.
+ */
+ allocsize = *size;
++#ifdef __MVS__
++ ptr = anon_mmap(NULL, allocsize);
++#else
+ ptr = mmap(NULL, allocsize, PROT_READ | PROT_WRITE,
+ PG_MMAP_FLAGS, -1, 0);
++#endif
+ mmap_errno = errno;
+ }
+
+@@ -677,7 +685,14 @@ AnonymousShmemDetach(int status, Datum arg)
+ /* Release anonymous shared memory block, if any. */
+ if (AnonymousShmem != NULL)
+ {
+- if (munmap(AnonymousShmem, AnonymousShmemSize) < 0)
++ int retcode;
++#ifdef __MVS__
++ retcode = anon_munmap(AnonymousShmem, AnonymousShmemSize);
++#else
++ retcode = munmap(AnonymousShmem, AnonymousShmemSize);
++#endif
++// if (munmap(AnonymousShmem, AnonymousShmemSize) < 0)
++ if (retcode < 0)
+ elog(LOG, "munmap(%p, %zu) failed: %m",
+ AnonymousShmem, AnonymousShmemSize);
+ AnonymousShmem = NULL;
+@@ -983,7 +998,14 @@ PGSharedMemoryDetach(void)
+
+ if (AnonymousShmem != NULL)
+ {
+- if (munmap(AnonymousShmem, AnonymousShmemSize) < 0)
++ int retcode;
++#ifdef __MVS__
++ retcode = anon_munmap(AnonymousShmem, AnonymousShmemSize);
++#else
++ retcode = munmap(AnonymousShmem, AnonymousShmemSize);
++#endif
++// if (munmap(AnonymousShmem, AnonymousShmemSize) < 0)
++ if (retcode < 0)
+ elog(LOG, "munmap(%p, %zu) failed: %m",
+ AnonymousShmem, AnonymousShmemSize);
+ AnonymousShmem = NULL;
diff --git a/patches/timestamp_c_patch.patch b/patches/timestamp_c_patch.patch
new file mode 100644
index 0000000..3d2205c
--- /dev/null
+++ b/patches/timestamp_c_patch.patch
@@ -0,0 +1,137 @@
+diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
+index 347089b..ff4eeec 100644
+--- a/src/backend/utils/adt/timestamp.c
++++ b/src/backend/utils/adt/timestamp.c
+@@ -490,11 +490,11 @@ timestamptz_in(PG_FUNCTION_ARGS)
+ static int
+ parse_sane_timezone(struct pg_tm *tm, text *zone)
+ {
+- char tzname[TZ_STRLEN_MAX + 1];
++ char tzname_[TZ_STRLEN_MAX + 1];
+ int dterr;
+ int tz;
+
+- text_to_cstring_buffer(zone, tzname, sizeof(tzname));
++ text_to_cstring_buffer(zone, tzname_, sizeof(tzname_));
+
+ /*
+ * Look up the requested timezone. First we try to interpret it as a
+@@ -506,14 +506,14 @@ parse_sane_timezone(struct pg_tm *tm, text *zone)
+ * as invalid, it's enough to disallow having a digit in the first
+ * position of our input string.
+ */
+- if (isdigit((unsigned char) *tzname))
++ if (isdigit((unsigned char) *tzname_))
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("invalid input syntax for type %s: \"%s\"",
+- "numeric time zone", tzname),
++ "numeric time zone", tzname_),
+ errhint("Numeric time zones must have \"-\" or \"+\" as first character.")));
+
+- dterr = DecodeTimezone(tzname, &tz);
++ dterr = DecodeTimezone(tzname_, &tz);
+ if (dterr != 0)
+ {
+ int type,
+@@ -523,13 +523,13 @@ parse_sane_timezone(struct pg_tm *tm, text *zone)
+ if (dterr == DTERR_TZDISP_OVERFLOW)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+- errmsg("numeric time zone \"%s\" out of range", tzname)));
++ errmsg("numeric time zone \"%s\" out of range", tzname_)));
+ else if (dterr != DTERR_BAD_FORMAT)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+- errmsg("time zone \"%s\" not recognized", tzname)));
++ errmsg("time zone \"%s\" not recognized", tzname_)));
+
+- type = DecodeTimezoneName(tzname, &val, &tzp);
++ type = DecodeTimezoneName(tzname_, &val, &tzp);
+
+ if (type == TZNAME_FIXED_OFFSET)
+ {
+@@ -539,7 +539,7 @@ parse_sane_timezone(struct pg_tm *tm, text *zone)
+ else if (type == TZNAME_DYNTZ)
+ {
+ /* dynamic-offset abbreviation, resolve using specified time */
+- tz = DetermineTimeZoneAbbrevOffset(tm, tzname, tzp);
++ tz = DetermineTimeZoneAbbrevOffset(tm, tzname_, tzp);
+ }
+ else
+ {
+@@ -559,11 +559,11 @@ parse_sane_timezone(struct pg_tm *tm, text *zone)
+ static pg_tz *
+ lookup_timezone(text *zone)
+ {
+- char tzname[TZ_STRLEN_MAX + 1];
++ char tzname_[TZ_STRLEN_MAX + 1];
+
+- text_to_cstring_buffer(zone, tzname, sizeof(tzname));
++ text_to_cstring_buffer(zone, tzname_, sizeof(tzname_));
+
+- return DecodeTimezoneNameToTz(tzname);
++ return DecodeTimezoneNameToTz(tzname_);
+ }
+
+ /*
+@@ -6329,7 +6329,7 @@ timestamp_zone(PG_FUNCTION_ARGS)
+ Timestamp timestamp = PG_GETARG_TIMESTAMP(1);
+ TimestampTz result;
+ int tz;
+- char tzname[TZ_STRLEN_MAX + 1];
++ char tzname_[TZ_STRLEN_MAX + 1];
+ int type,
+ val;
+ pg_tz *tzp;
+@@ -6342,9 +6342,9 @@ timestamp_zone(PG_FUNCTION_ARGS)
+ /*
+ * Look up the requested timezone.
+ */
+- text_to_cstring_buffer(zone, tzname, sizeof(tzname));
++ text_to_cstring_buffer(zone, tzname_, sizeof(tzname_));
+
+- type = DecodeTimezoneName(tzname, &val, &tzp);
++ type = DecodeTimezoneName(tzname_, &val, &tzp);
+
+ if (type == TZNAME_FIXED_OFFSET)
+ {
+@@ -6359,7 +6359,7 @@ timestamp_zone(PG_FUNCTION_ARGS)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("timestamp out of range")));
+- tz = -DetermineTimeZoneAbbrevOffset(&tm, tzname, tzp);
++ tz = -DetermineTimeZoneAbbrevOffset(&tm, tzname_, tzp);
+ result = dt2local(timestamp, tz);
+ }
+ else
+@@ -6567,7 +6567,7 @@ timestamptz_zone(PG_FUNCTION_ARGS)
+ TimestampTz timestamp = PG_GETARG_TIMESTAMPTZ(1);
+ Timestamp result;
+ int tz;
+- char tzname[TZ_STRLEN_MAX + 1];
++ char tzname_[TZ_STRLEN_MAX + 1];
+ int type,
+ val;
+ pg_tz *tzp;
+@@ -6578,9 +6578,9 @@ timestamptz_zone(PG_FUNCTION_ARGS)
+ /*
+ * Look up the requested timezone.
+ */
+- text_to_cstring_buffer(zone, tzname, sizeof(tzname));
++ text_to_cstring_buffer(zone, tzname_, sizeof(tzname_));
+
+- type = DecodeTimezoneName(tzname, &val, &tzp);
++ type = DecodeTimezoneName(tzname_, &val, &tzp);
+
+ if (type == TZNAME_FIXED_OFFSET)
+ {
+@@ -6593,7 +6593,7 @@ timestamptz_zone(PG_FUNCTION_ARGS)
+ /* dynamic-offset abbreviation, resolve using specified time */
+ int isdst;
+
+- tz = DetermineTimeZoneAbbrevOffsetTS(timestamp, tzname, tzp, &isdst);
++ tz = DetermineTimeZoneAbbrevOffsetTS(timestamp, tzname_, tzp, &isdst);
+ result = dt2local(timestamp, tz);
+ }
+ else
diff --git a/patches/waiteventset_patch.patch b/patches/waiteventset_patch.patch
new file mode 100644
index 0000000..61bbb06
--- /dev/null
+++ b/patches/waiteventset_patch.patch
@@ -0,0 +1,139 @@
+diff --git a/src/backend/storage/ipc/waiteventset.c b/src/backend/storage/ipc/waiteventset.c
+index 7c0e66900f9..574ced67132 100644
+--- a/src/backend/storage/ipc/waiteventset.c
++++ b/src/backend/storage/ipc/waiteventset.c
+@@ -86,7 +86,7 @@
+ #if defined(WAIT_USE_EPOLL) || defined(WAIT_USE_POLL) || \
+ defined(WAIT_USE_KQUEUE) || defined(WAIT_USE_WIN32)
+ /* don't overwrite manual choice */
+-#elif defined(HAVE_SYS_EPOLL_H)
++#elif defined(HAVE_SYS_EPOLL_H) && ! defined (__MVS__)
+ #define WAIT_USE_EPOLL
+ #elif defined(HAVE_KQUEUE)
+ #define WAIT_USE_KQUEUE
+@@ -142,7 +142,7 @@ struct WaitEventSet
+ */
+ bool exit_on_postmaster_death;
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ int epoll_fd;
+ /* epoll_wait returns events in a user provided arrays, allocate once */
+ struct epoll_event *epoll_ret_events;
+@@ -192,7 +192,7 @@ static void sendSelfPipeByte(void);
+ static void drain(void);
+ #endif
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ static void WaitEventAdjustEpoll(WaitEventSet *set, WaitEvent *event, int action);
+ #elif defined(WAIT_USE_KQUEUE)
+ static void WaitEventAdjustKqueue(WaitEventSet *set, WaitEvent *event, int old_events);
+@@ -202,7 +202,7 @@ static void WaitEventAdjustPoll(WaitEventSet *set, WaitEvent *event);
+ static void WaitEventAdjustWin32(WaitEventSet *set, WaitEvent *event);
+ #endif
+
+-static inline int WaitEventSetWaitBlock(WaitEventSet *set, int cur_timeout,
++int WaitEventSetWaitBlock(WaitEventSet *set, int cur_timeout,
+ WaitEvent *occurred_events, int nevents);
+
+ /* ResourceOwner support to hold WaitEventSets */
+@@ -375,7 +375,7 @@ CreateWaitEventSet(ResourceOwner resowner, int nevents)
+ sz += MAXALIGN(sizeof(WaitEventSet));
+ sz += MAXALIGN(sizeof(WaitEvent) * nevents);
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ sz += MAXALIGN(sizeof(struct epoll_event) * nevents);
+ #elif defined(WAIT_USE_KQUEUE)
+ sz += MAXALIGN(sizeof(struct kevent) * nevents);
+@@ -397,7 +397,7 @@ CreateWaitEventSet(ResourceOwner resowner, int nevents)
+ set->events = (WaitEvent *) data;
+ data += MAXALIGN(sizeof(WaitEvent) * nevents);
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ set->epoll_ret_events = (struct epoll_event *) data;
+ data += MAXALIGN(sizeof(struct epoll_event) * nevents);
+ #elif defined(WAIT_USE_KQUEUE)
+@@ -421,7 +421,7 @@ CreateWaitEventSet(ResourceOwner resowner, int nevents)
+ set->owner = resowner;
+ }
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ if (!AcquireExternalFD())
+ elog(ERROR, "AcquireExternalFD, for epoll_create1, failed: %m");
+ set->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
+@@ -485,7 +485,7 @@ FreeWaitEventSet(WaitEventSet *set)
+ set->owner = NULL;
+ }
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ close(set->epoll_fd);
+ ReleaseExternalFD();
+ #elif defined(WAIT_USE_KQUEUE)
+@@ -522,7 +522,7 @@ FreeWaitEventSet(WaitEventSet *set)
+ void
+ FreeWaitEventSetAfterFork(WaitEventSet *set)
+ {
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ close(set->epoll_fd);
+ ReleaseExternalFD();
+ #elif defined(WAIT_USE_KQUEUE)
+@@ -631,7 +631,7 @@ AddWaitEventToSet(WaitEventSet *set, uint32 events, pgsocket fd, Latch *latch,
+ }
+
+ /* perform wait primitive specific initialization, if needed */
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ WaitEventAdjustEpoll(set, event, EPOLL_CTL_ADD);
+ #elif defined(WAIT_USE_KQUEUE)
+ WaitEventAdjustKqueue(set, event, 0);
+@@ -718,7 +718,7 @@ ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
+ #endif
+ }
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ WaitEventAdjustEpoll(set, event, EPOLL_CTL_MOD);
+ #elif defined(WAIT_USE_KQUEUE)
+ WaitEventAdjustKqueue(set, event, old_events);
+@@ -729,7 +729,7 @@ ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
+ #endif
+ }
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+ /*
+ * action can be one of EPOLL_CTL_ADD | EPOLL_CTL_MOD | EPOLL_CTL_DEL
+ */
+@@ -1167,7 +1167,7 @@ WaitEventSetWait(WaitEventSet *set, long timeout,
+ }
+
+
+-#if defined(WAIT_USE_EPOLL)
++#if defined(WAIT_USE_EPOLL) && !defined (__MVS__)
+
+ /*
+ * Wait using linux's epoll_wait(2).
+@@ -1177,7 +1177,7 @@ WaitEventSetWait(WaitEventSet *set, long timeout,
+ * epoll_event struct contain a pointer to our events, making association
+ * easy.
+ */
+-static inline int
++int
+ WaitEventSetWaitBlock(WaitEventSet *set, int cur_timeout,
+ WaitEvent *occurred_events, int nevents)
+ {
+@@ -1466,7 +1466,7 @@ WaitEventSetWaitBlock(WaitEventSet *set, int cur_timeout,
+ * This allows to receive readiness notifications for several events at once,
+ * but requires iterating through all of set->pollfds.
+ */
+-static inline int
++int
+ WaitEventSetWaitBlock(WaitEventSet *set, int cur_timeout,
+ WaitEvent *occurred_events, int nevents)
+ {
diff --git a/patches/zos_h_patch.patch b/patches/zos_h_patch.patch
new file mode 100644
index 0000000..57b844c
--- /dev/null
+++ b/patches/zos_h_patch.patch
@@ -0,0 +1,7 @@
+diff --git a/src/include/port/zos.h b/src/include/port/zos.h
+new file mode 100644
+index 00000000000..5b8810ed3d0
+--- /dev/null
++++ b/src/include/port/zos.h
+@@ -0,0 +1 @@
++//created empty file as postgres configure step requires the zos.h
diff --git a/patches/zos_template_patch.patch b/patches/zos_template_patch.patch
new file mode 100644
index 0000000..4958cfb
--- /dev/null
+++ b/patches/zos_template_patch.patch
@@ -0,0 +1,46 @@
+diff --git a/src/template/zos b/src/template/zos
+new file mode 100644
+index 00000000000..7ee01f92df0
+--- /dev/null
++++ b/src/template/zos
+@@ -0,0 +1,40 @@
++# src/template/zos
++# currently copied from src/template/linux
++
++# Prefer unnamed POSIX semaphores if available, unless user overrides choice
++if test x"$PREFERRED_SEMAPHORES" = x"" ; then
++ PREFERRED_SEMAPHORES=UNNAMED_POSIX
++fi
++
++# Force _GNU_SOURCE on; plperl is broken with Perl 5.8.0 otherwise
++# This is also required for ppoll(2), and perhaps other things
++CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
++
++# Extra CFLAGS for code that will go into a shared library
++CFLAGS_SL="-fPIC"
++
++# If --enable-profiling is specified, we need -DLINUX_PROFILE
++PLATFORM_PROFILE_FLAGS="-DLINUX_PROFILE"
++
++if test "$SUN_STUDIO_CC" = "yes" ; then
++ CC="$CC -Xa" # relaxed ISO C mode
++ CFLAGS="-v" # -v is like gcc -Wall
++ if test "$enable_debug" != yes; then
++ CFLAGS="$CFLAGS -O" # any optimization breaks debug
++ fi
++
++ # Pick the right test-and-set (TAS) code for the Sun compiler.
++ # We would like to use in-line assembler, but the compiler
++ # requires *.il files to be on every compile line, making
++ # the build system too fragile.
++ case $host_cpu in
++ sparc)
++ need_tas=yes
++ tas_file=sunstudio_sparc.s
++ ;;
++ i?86|x86_64)
++ need_tas=yes
++ tas_file=sunstudio_x86.s
++ ;;
++ esac
++fi