Implement a definitive czmq build for cygwin targets.

INSTALL.cygwin

@@ -0,0 +1,13 @@
+
+Cygwin users note: To do a complete build, you'll need to get iMatix' gsl and build
+it first; see https://github.com/imatix/gsl.
+
+After building and installing gsl, issue these commands in the czmq directory:
+
+cd ./model
+./generate
+cd ..
+./autogen.sh
+./configure
+cmake .
+make

ISSUES.cygwin

@@ -0,0 +1,6 @@
+Known issues:
+
+czmq_selftest segfaults in zsock_test when sending a message with a binary picture type
+when it first calls zmsg_addmem which next invokes zframe_new, which invokes zmq_msg_data
+to get a pointer to the message content; zmq_msg_data returns a bad address and then
+memcpy segfaults.

Makefile.am

@@ -22,6 +22,7 @@ EXTRA_DIST = \
 	builds/android/clean.sh \
 	builds/mingw32/Makefile.mingw32 \
 	builds/mingw32/platform.h \
+	builds/cygwin/Makefile.cygwin \
 	examples/security/grasslands.c \
 	examples/security/strawhouse.c \
 	examples/security/woodhouse.c \

README.cygwin

@@ -0,0 +1,23 @@
+czmq-cygwin
+=============
+
+Implement a definitive build for cygwin targets.
+
+What's changed:
+  ./Makefile.am                       Add cygwin-specific target mostly the same as mingw
+  ./configure.ac                      Add cygwin-specific target mostly the same as mingw
+  ./model/build-autoconf.gsl          Make changes for cygwin-specific targets
+  ./model/build-cmake.gsl             Make changes for cygwin-specific targets
+  ./model/generate                    Make changes for cygwin-specific targets
+  ./model/generate.bat                Make changes for cygwin-specific targets
+  ./model/project.gsl                 Make changes for cygwin-specific targets
+  ./model/Makemodule.am               Make changes for cygwin-specific targets
+
+What's new:
+  ./README.cygwin                     This file
+  ./INSTALL.cygwin                    Notes on installing for cygwin
+  ./builds/cygwin                     Folder for cygwin-specific build files
+  ./builds/cygwin/Makefile.cygwin     Makefile for cygwin targets
+  ./model/build-cygwin.gsl            Add cygwin-specific target mostly the same as mingw
+
+

builds/cygwin/Makefile.cygwin

@@ -0,0 +1,32 @@
+#################################################################
+#   GENERATED SOURCE CODE, DO NOT EDIT EXCEPT EXPERIMENTALLY    #
+#   Please read the README.txt file in the model directory.     #
+#################################################################
+
+CC=gcc
+# replace the following with wherever you have installed libzmq
+PREFIX=/usr/local
+INCDIR=-I$(PREFIX)/include -I.
+LIBDIR=-L$(PREFIX)/lib
+CFLAGS=-Wall -Os -g -DLIBCZMQ_EXPORTS $(INCDIR)
+
+OBJS = zactor.o zauth.o zarmour.o zbeacon.o zcert.o zcertstore.o zchunk.o zclock.o zconfig.o zdigest.o zdir.o zdir_patch.o zfile.o zframe.o zgossip.o zhashx.o ziflist.o zlistx.o zloop.o zmonitor.o zmsg.o zpoller.o zproxy.o zrex.o zsock.o zsock_option.o zstr.o zsys.o zuuid.o zgossip_msg.o zauth_v2.o zbeacon_v2.o zctx.o zhash.o zlist.o zmonitor_v2.o zmutex.o zproxy_v2.o zsocket.o zsockopt.o zthread.o
+%.o: ../../src/%.c
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+all: libczmq.dll # czmq_selftest.exe
+
+libczmq.dll: $(OBJS)
+	$(CC) -shared -o $@ $(OBJS) -Wl,--out-implib,[email protected] $(LIBDIR) -lzmq -luuid 
+
+# the test functions are not exported into the DLL
+czmq_selftest.exe: czmq_selftest.o $(OBJS)
+	$(CC) -o $@ $^ $(LIBDIR) -lzmq -luuid
+
+clean:
+	del *.o *.a *.dll *.exe
+
+#################################################################
+#   GENERATED SOURCE CODE, DO NOT EDIT EXCEPT EXPERIMENTALLY    #
+#   Please read the README.txt file in the model directory.     #
+#################################################################

configure.ac

@@ -83,6 +83,7 @@ PKG_CHECK_MODULES([zmq], [libzmq])
 
 # Platform specific checks
 czmq_on_mingw32="no"
+czmq_on_cygwin="no"
 czmq_on_android="no"
 
 # Host speciffic checks
@@ -174,6 +175,7 @@ case "${host_os}" in
         # Define on Cygwin to enable all library features
         CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
         AC_DEFINE(CZMQ_HAVE_CYGWIN, 1, [Have Cygwin])
+        czmq_on_mingw32="yes"
         ;;
     *)
         AC_MSG_ERROR([unsupported system: ${host_os}.])
@@ -209,6 +211,7 @@ if test "x$GCC" = "xyes"; then
 fi
 
 AM_CONDITIONAL(ON_MINGW, test "x$czmq_on_mingw32" = "xyes")
+AM_CONDITIONAL(ON_CYGWIN, test "x$czmq_on_cygwin" = "xyes")
 AM_CONDITIONAL(ON_ANDROID, test "x$czmq_on_android" = "xyes")
 AM_CONDITIONAL(INSTALL_MAN, test "x$czmq_install_man" = "xyes")
 AM_CONDITIONAL(BUILD_DOC, test "x$czmq_build_doc" = "xyes")

model/Makemodule.am

@@ -4,6 +4,7 @@ dist_bin_SCRIPTS = \
     model/build-autoconf.gsl \
     model/build-cmake.gsl \
     model/build-mingw32.gsl \
+    model/build-cygwin.gsl \
     model/build-vs2008.gsl \
     model/build-vs2010.gsl \
     model/build-vs2012.gsl \

model/build-autoconf.gsl

@@ -64,6 +64,12 @@ src_lib$(project.name)_la_LDFLAGS += \\
     -avoid-version
 endif
 
+if ON_CYGWIN
+src_lib$(project.name)_la_LDFLAGS += \\
+    -no-undefined \\
+    -avoid-version
+endif
+
 .if count(package_dependency, defined(package_dependency.for_lib) | defined (package_dependency.for_all)) > 0
 src_lib$(project.name)_la_LIBADD = \\
 .for package_dependency where defined (package_dependency.for_lib) | defined (package_dependency.for_all)

model/build-cmake.gsl

@@ -77,6 +77,11 @@ if (MINGW)
     set(MORE_LIBRARIES -lws2_32 -lrpcrt4 -liphlpapi)
 endif()
 
+# required libraries for cygwin
+if (CYGWIN)
+    set(MORE_LIBRARIES -luuid)
+endif()
+
 ########################################################################
 # ZeroMQ depedency
 ########################################################################

model/build-cygwin.gsl

@@ -0,0 +1,44 @@
+.#  Generate cygwin makefile for project
+.#
+.#  This is a code generator built using the iMatix GSL code generation
+.#  language. See https://github.com/imatix/gsl for details. This script
+.#  is licensed under MIT/X11.
+.#
+.echo "Generating builds/cygwin/Makefile.cygwin..."
+.output "../builds/cygwin/Makefile.cygwin"
+#################################################################
+#   GENERATED SOURCE CODE, DO NOT EDIT EXCEPT EXPERIMENTALLY    #
+#   Please read the README.txt file in the model directory.     #
+#################################################################
+
+CC=gcc
+# replace the following with wherever you have installed libzmq
+PREFIX=/usr/local
+INCDIR=-I$\(PREFIX)/include -I.
+LIBDIR=-L$\(PREFIX)/lib
+CFLAGS=-Wall -Os -g -DLIB$(PROJECT.NAME)_EXPORTS $\(INCDIR)
+
+OBJS =\
+.for class
+ $(name).o\
+.endfor
+
+%.o: ../../src/%.c
+	$\(CC) -c -o $@ $< $\(CFLAGS)
+
+all: lib$(project.name).dll # $(project.name)_selftest.exe
+
+lib$(project.name).dll: $\(OBJS)
+	$\(CC) -shared -o $@ $\(OBJS) -Wl,--out-implib,[email protected] $\(LIBDIR) -lzmq -luuid 
+
+# the test functions are not exported into the DLL
+$(project.name)_selftest.exe: $(project.name)_selftest.o $\(OBJS)
+	$\(CC) -o $@ $^ $\(LIBDIR) -lzmq -luuid
+
+clean:
+	del *.o *.a *.dll *.exe
+
+#################################################################
+#   GENERATED SOURCE CODE, DO NOT EDIT EXCEPT EXPERIMENTALLY    #
+#   Please read the README.txt file in the model directory.     #
+#################################################################

model/generate

@@ -4,6 +4,7 @@
 #       - add a new project class (project.xml)
 
 mkdir -p ../builds/mingw32
+mkdir -p ../builds/cygwin
 mkdir -p ../builds/android
 mkdir -p ../builds/msvc/vs2008/czmq
 mkdir -p ../builds/msvc/vs2008/czmq_selftest

model/generate.bat

@@ -6,6 +6,7 @@ REM       - add a new project class (project.xml)
 REM       - modify one of the referenced gsl templates (*.gsl)
 
 mkdir ..\builds\mingw32
+mkdir ..\builds\cygwin
 mkdir ..\builds\android
 mkdir ..\builds\msvc\vs2008\czmq
 mkdir ..\builds\msvc\vs2008\czmq_selftest

model/project.gsl

@@ -5,6 +5,7 @@
 .include "build-cmake.gsl"
 .include "build-android.gsl"
 .include "build-mingw32.gsl"
+.include "build-cygwin.gsl"
 .include "build-vs2008.gsl"
 .include "build-vs2010.gsl"
 .include "build-vs2012.gsl"