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configure.ac
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# nbdkit
# Copyright Red Hat
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * Neither the name of Red Hat nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
m4_define([NBDKIT_VERSION_MAJOR], [1])
m4_define([NBDKIT_VERSION_MINOR], [37])
m4_define([NBDKIT_VERSION_MICRO], [9])
AC_INIT([nbdkit],
NBDKIT_VERSION_MAJOR.NBDKIT_VERSION_MINOR.NBDKIT_VERSION_MICRO)
AC_CONFIG_MACRO_DIR([m4])
dnl This must be used very early else you will get
dnl "warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS"
m4_ifdef([AC_USE_SYSTEM_EXTENSIONS],[],
[m4_define([AC_USE_SYSTEM_EXTENSIONS],[])])
AC_USE_SYSTEM_EXTENSIONS
dnl NB: Do not [quote] this parameter.
AM_INIT_AUTOMAKE(foreign)
LT_INIT([win32-dll])
dnl Extra string, a freeform string defined by downstream packagers.
dnl eg. If you are packaging nbdkit for Linux distro X 1.1, you could
dnl ./configure --with-extra="X release 1.1"
AC_ARG_WITH([extra],
[AS_HELP_STRING([--with-extra=...],
[extra version information (for use by packagers)])],
[NBDKIT_VERSION_EXTRA="$withval"],
[NBDKIT_VERSION_EXTRA=]
)
AC_DEFINE_UNQUOTED([NBDKIT_VERSION_EXTRA], ["$NBDKIT_VERSION_EXTRA"],
[Extra version information (for use by packagers)])
AC_MSG_NOTICE([nbdkit version NBDKIT_VERSION_MAJOR.NBDKIT_VERSION_MINOR.NBDKIT_VERSION_MICRO ($NBDKIT_VERSION_EXTRA)])
dnl List of plugins and filters.
lang_plugins="\
cc \
golang \
lua \
ocaml \
perl \
python \
ruby \
rust \
sh \
tcl \
"
non_lang_plugins="\
blkio \
cdi \
curl \
data \
eval \
example1 \
example2 \
example3 \
example4 \
file \
floppy \
full \
gcs \
guestfs \
info \
iso \
libvirt \
linuxdisk \
memory \
nbd \
null \
ondemand \
ones \
partitioning \
pattern \
random \
S3 \
sparse-random \
split \
ssh \
tmpdisk \
torrent \
vddk \
zero \
"
plugins="$(echo $(printf %s\\n $lang_plugins $non_lang_plugins | sort -u))"
filters="\
blocksize \
blocksize-policy \
cache \
cacheextents \
checkwrite \
cow \
ddrescue \
delay \
error \
exitlast \
exitwhen \
exportname \
ext2 \
extentlist \
evil \
fua \
gzip \
ip \
limit \
log \
luks \
multi-conn \
nocache \
noextents \
nofilter \
noparallel \
nozero \
offset \
partition \
pause \
protect \
qcow2dec \
rate \
readahead \
readonly \
retry \
retry-request \
scan \
stats \
swab \
tar \
tls-fallback \
truncate \
xz \
"
AC_SUBST([plugins])
AC_SUBST([lang_plugins])
AC_SUBST([non_lang_plugins])
AC_SUBST([filters])
dnl Some very basic tools.
AC_PROG_SED
AC_PROG_RANLIB
dnl Bash must be at least version 4. If it is too old, fail hard
dnl with a good diagnostic. Note macOS ships an ancient version
dnl of bash (https://gitlab.com/nbdkit/nbdkit/-/issues/21)
bash=`which bash`
AC_MSG_CHECKING([for the major version of $bash])
bash_major=`bash -c 'echo ${BASH_VERSINFO:-0}'`
AC_MSG_RESULT([$bash_major])
AS_IF([test $bash_major -lt 4],
[AC_MSG_ERROR([
Your bash shell ($bash) is older than version 4.
If you are using macOS, please install the latest version of bash
from homebrew or macports.
If you have installed the latest bash and this error is still
showing up, check that \$PATH is set correctly.
])])
dnl Check for basic C environment.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_CPP
AC_SYS_LARGEFILE
AC_C_PROTOTYPES
test "x$U" != "x" && AC_MSG_ERROR([Compiler not ANSI compliant])
AM_PROG_CC_C_O
dnl Define the host CPU architecture (defines 'host_cpu').
AC_CANONICAL_HOST
AC_DEFINE_UNQUOTED([host_cpu],["$host_cpu"],[Host architecture.])
dnl Define 'host_os'.
AC_DEFINE_UNQUOTED([host_os],["$host_os"],[Host operating system.])
dnl Defines WORDS_BIGENDIAN on big endian platforms.
AC_C_BIGENDIAN
dnl These are defined in <unistd.h> which is included by
dnl AC_DEFAULT_INCLUDES.
AC_CHECK_SIZEOF([pid_t])
AC_CHECK_SIZEOF([uid_t])
AC_CHECK_SIZEOF([gid_t])
dnl Check for C++ (optional, we just use this to test the header
dnl can be included from C++ code).
AC_PROG_CXX
dnl The C++ compiler test is pretty useless because even if it fails
dnl it sets CXX=g++. So test the compiler actually works.
AC_MSG_CHECKING([if the C++ compiler really really works])
AS_IF([$CXX --version >&AS_MESSAGE_LOG_FD 2>&1],[have_cxx=yes],[have_cxx=no])
AC_MSG_RESULT([$have_cxx])
AM_CONDITIONAL([HAVE_CXX], [test "$have_cxx" = "yes"])
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings],
[turn on lots of GCC warnings (for developers)])],
[case $enableval in
yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
esac
gcc_warnings=$enableval],
[gcc_warnings=no]
)
if test "x$gcc_warnings" = "xyes"; then
WARNINGS_CFLAGS="-Wall -Wshadow -Wvla -Werror"
AC_SUBST([WARNINGS_CFLAGS])
fi
dnl Check if the compiler supports -std=c90 flag. This is only used
dnl during a test. OpenBSD GCC does not support this flag so we skip
dnl that test.
AC_MSG_CHECKING([if the compiler supports -std=c90 for ANSI C test])
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -std=c90"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[supports_std_c90=yes],
[supports_std_c90=no])
CFLAGS="$old_CFLAGS"
AC_MSG_RESULT([$supports_std_c90])
AM_CONDITIONAL([CAN_TEST_ANSI_C], [test "x$supports_std_c90" = "xyes"])
dnl Check for __builtin_*_overflow. We need the dummy parameters
dnl else detection doesn't work correctly for some reason.
AC_CHECK_DECLS([__builtin_add_overflow(int, int, int *),
__builtin_mul_overflow(int, int, int *)],
[], [], [])
dnl On Haiku we must use BSD-compatibility headers to get the endian
dnl macros we use.
AC_MSG_CHECKING(whether OS-dependent include paths are required)
AS_CASE([$host_os],
[haiku*], [CFLAGS="$CFLAGS -I`findpaths -p /system B_FIND_PATH_HEADERS_DIRECTORY`/bsd"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
dnl On Linux /tmp is often tmpfs which is not large enough, so use /var/tmp.
dnl But Haiku only has /tmp.
AC_MSG_CHECKING([for temporary directory for large files])
AS_CASE([$host_os],
[haiku*], [LARGE_TMPDIR=/tmp],
[LARGE_TMPDIR=/var/tmp]
)
AC_MSG_RESULT([$LARGE_TMPDIR])
AC_DEFINE_UNQUOTED([LARGE_TMPDIR],["$LARGE_TMPDIR"],
[Temporary directory for large files])
dnl Check if libc has program_invocation_short_name.
AC_CHECK_DECLS([program_invocation_short_name], [], [], [#include <errno.h>])
AX_PTHREAD
dnl Check if __attribute__((cleanup(...))) works.
dnl Set -Werror, otherwise gcc will only emit a warning for attributes
dnl that it doesn't understand.
acx_nbdkit_save_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} -Werror"
AC_MSG_CHECKING([if __attribute__((cleanup(...))) works with this compiler])
AC_COMPILE_IFELSE([
AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
void
freep (void *ptr)
{
exit (EXIT_SUCCESS);
}
void
test (void)
{
__attribute__((cleanup(freep))) char *ptr = malloc (100);
(void)ptr;
}
int
main (int argc, char *argv[])
{
test ();
exit (EXIT_FAILURE);
}
]])
],[
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR(
['__attribute__((cleanup(...)))' does not work.
You may not be using a sufficiently recent version of GCC or CLANG, or
you may be using a C compiler which does not support this attribute,
or the configure test may be wrong.
This code requires the attribute to work for proper locking between threads.])])
CFLAGS="${acx_nbdkit_save_CFLAGS}"
dnl Check for __auto_type (GCC extension).
AC_MSG_CHECKING([if __auto_type is available in this compiler])
AC_COMPILE_IFELSE([
AC_LANG_SOURCE([[
static int
test (int a)
{
__auto_type at = a;
return at;
}
]])
],[
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AUTO_TYPE],[1],[__auto_type is available])
],[
AC_MSG_RESULT([no])
]
)
dnl 'environ' is not always declared in public header files:
dnl Linux => <unistd.h> Haiku => <stdlib.h>
dnl FreeBSD & OpenBSD => not declared
dnl On platforms where it's not declared we must add an extern decl.
AC_MSG_CHECKING([if environ is declared in header files])
AC_COMPILE_IFELSE([
AC_LANG_SOURCE([[
#include <stdlib.h>
#include <unistd.h>
static int
test (void)
{
char **env = environ;
return env ? 1 : 0; // this just forces env to be used
}
]])
],[
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_ENVIRON_DECL],[1],[environ is declared in headers])
],[
AC_MSG_RESULT([no])
]
)
dnl Check sizeof long.
AC_CHECK_SIZEOF(long)
dnl Check for other headers, all optional.
AC_CHECK_HEADERS([\
alloca.h \
afunix.h \
arpa/inet.h \
byteswap.h \
endian.h \
grp.h \
linux/fs.h \
netdb.h \
netinet/in.h \
netinet/tcp.h \
pwd.h \
termios.h \
stdatomic.h \
syslog.h \
sys/endian.h \
sys/ioctl.h \
sys/mman.h \
sys/prctl.h \
sys/procctl.h \
sys/socket.h \
sys/statvfs.h \
sys/ucred.h \
sys/un.h \
sys/vsock.h \
sys/wait.h \
winsock2.h])
AC_CHECK_HEADERS([linux/vm_sockets.h], [], [], [#include <sys/socket.h>])
dnl Check for functions in libc, all optional.
AC_CHECK_FUNCS([\
accept4 \
fdatasync \
flockfile \
funlockfile \
inet_ntop \
inet_pton \
mkostemp \
mlock \
mlockall \
munlock \
open_memstream \
pipe \
pipe2 \
ppoll \
posix_fadvise \
posix_memalign \
valloc])
dnl Check for structs and members.
AC_CHECK_MEMBERS([struct dirent.d_type], [], [], [[#include <dirent.h>]])
AC_CHECK_MEMBERS([struct ucred.uid], [], [],
[[
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_SYS_UCRED_H
#include <sys/ucred.h>
#endif
]])
AC_CHECK_MEMBERS([struct sockpeercred.uid], [], [],
[[
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
]])
dnl Replacement functions that we provide for some platforms.
AC_CONFIG_LIBOBJ_DIR([common/replacements])
AC_REPLACE_FUNCS([\
fdatasync \
fsync \
get_current_dir_name \
getdelim \
getline \
openlog \
open_memstream \
poll \
posix_memalign \
pread \
pwrite \
realpath \
strndup \
sysconf \
syslog \
vsyslog])
dnl Check whether printf("%m") works
AC_CACHE_CHECK([whether the printf family supports %m],
[nbdkit_cv_func_printf_percent_m],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <string.h>
#include <errno.h>
]], [[
char buf[200] = "";
errno = EINVAL;
snprintf(buf, sizeof buf, "%m");
return !!strcmp (buf, strerror (EINVAL));
]])],
[nbdkit_cv_func_printf_percent_m=yes],
[nbdkit_cv_func_printf_percent_m=no],
[[
case "$host_os" in
*-gnu* | gnu*) nbdkit_cv_func_printf_percent_m=yes;;
*) nbdkit_cv_func_printf_percent_m="guessing no";;
esac
]])])
AS_IF([test "x$nbdkit_cv_func_printf_percent_m" = xyes],
[AC_DEFINE([HAVE_VFPRINTF_PERCENT_M],[1],
[Define to 1 if vfprintf supports %m.])])
dnl Check for dlsym (required, on Windows install dlfcn).
old_LIBS="$LIBS"
AC_SEARCH_LIBS([dlsym], [dl dld], [
AS_IF([test "x$ac_cv_search_dlsym" != "xnone required"],
[DL_LIBS="$ac_cv_search_dlsym"], [DL_LIBS=])
AC_SUBST([DL_LIBS])
], [AC_MSG_ERROR([unable to find the dlsym() function])
])
LIBS="$old_LIBS"
dnl Check for dladdr in -ldl (optional, this is a glibc extension).
old_LIBS="$LIBS"
LIBS="$DL_LIBS $LIBS"
AC_CHECK_FUNCS([dladdr])
LIBS="$old_LIBS"
dnl Test if <iconv.h> header can build working binaries.
dnl
dnl On FreeBSD: iconv and libiconv both exist, both can be installed
dnl simultaneously, <iconv.h> can exist in two separate places, and
dnl if you get the wrong header/library mix everything breaks.
dnl
dnl On Haiku: libiconv is required to link to iconv_* functions.
AC_ARG_WITH([iconv],
[AS_HELP_STRING([--without-iconv],
[don't try to link against iconv @<:@default=check@:>@])],
[],
[with_iconv=check])
AS_IF([test "x$with_iconv" != "xno"],[
AC_CHECK_HEADER([iconv.h],[
AC_MSG_CHECKING([if <iconv.h> can be used to link a program])
AC_LINK_IFELSE([
AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
#include <iconv.h>
int
main (int argc, char *argv[])
{
iconv_t ic = iconv_open ("", "");
iconv_close (ic);
exit (0);
}
]])
],[
AC_MSG_RESULT([yes])
iconv_working=yes
],[
AC_MSG_RESULT([no])
])
])
])
AM_CONDITIONAL([HAVE_ICONV], [test "x$iconv_working" = "xyes"])
use_linker_script=yes
dnl Don't use linker script on FreeBSD because FreeBSD's linker is
dnl broken. See eg:
dnl https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=190851
dnl Also on macOS (darwin) which fails with:
dnl ld: unknown option: --version-script=./nbdkit.syms
dnl clang: error: linker command failed with exit code 1
AC_MSG_CHECKING([if we should disable the linker script (FreeBSD, macOS)])
AS_CASE([$host_os],
[freebsd*|darwin*], [
use_linker_script=no
AC_MSG_RESULT([yes])
],
[AC_MSG_RESULT([no])]
)
dnl Check if -rdynamic linker flag works.
acx_nbdkit_save_LDFLAGS="${LDFLAGS}"
LDFLAGS="${LDFLAGS} -rdynamic"
AC_MSG_CHECKING([if linker supports -rdynamic])
AC_LINK_IFELSE([
AC_LANG_SOURCE([[
#include <stdlib.h>
int
main (int argc, char *argv[])
{
exit (EXIT_SUCCESS);
}
]])
],[
AC_MSG_RESULT([yes])
DL_LDFLAGS=-rdynamic
],[
AC_MSG_RESULT([no])
])
dnl restore CFLAGS
LDFLAGS="${acx_nbdkit_save_LDFLAGS}"
AC_SUBST([DL_LDFLAGS])
dnl Is this Windows?
AC_MSG_CHECKING([if the target is Windows])
AS_CASE([$host_os],
[mingw*|msys*], [
is_windows=yes
LIBS="$LIBS -lkernel32 -luser32 -lws2_32"
NO_UNDEFINED_ON_WINDOWS="-no-undefined"
IMPORT_LIBRARY_ON_WINDOWS='-Wl,-L$(top_builddir)/server -Wl,-lnbdkit'
SOEXT="dll"
DIR_SEPARATOR_STR='\\'
],
[is_windows=no
SOEXT="so"
DIR_SEPARATOR_STR=/]
)
AC_MSG_RESULT([$is_windows])
AC_SUBST([NO_UNDEFINED_ON_WINDOWS])
AC_SUBST([IMPORT_LIBRARY_ON_WINDOWS])
AC_SUBST([SOEXT])
AC_DEFINE_UNQUOTED([SOEXT],["$SOEXT"],[Extension used for shared objects/DLLs.])
AC_DEFINE_UNQUOTED([EXEEXT],["$EXEEXT"],[Extension used for executables.])
AC_DEFINE_UNQUOTED([DIR_SEPARATOR_STR],["$DIR_SEPARATOR_STR"],
[String that separates path elements.])
AM_CONDITIONAL([IS_WINDOWS],[test "x$is_windows" = "xyes"])
dnl Look for the mc/windmc utility (optional).
AC_CHECK_TOOLS([MC],[windmc mc.exe],[no])
AM_CONDITIONAL([HAVE_MC],[test "x$MC" != "xno"])
dnl On Windows look for dlltool.
AS_IF([test "x$is_windows" = "xyes"],[
AC_CHECK_TOOLS([DLLTOOL],[dlltool],[no])
AS_IF([test "x$DLLTOOL" = "xno"],
[AC_MSG_ERROR([dlltool utility must be available when compiling for Windows])])
])
dnl See if getaddrinfo requires an external library.
AC_SEARCH_LIBS([getaddrinfo], [network socket])
dnl Does this platform require libc_malloc_debug.so.0 (glibc >= 2.34)?
AC_MSG_CHECKING([if this is glibc >= 2.34])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <limits.h>
#if !defined(__GLIBC__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 34)
#error "not glibc 2.34"
#endif
]])], [is_glibc_234=yes], [is_glibc_234=no]
)
AC_MSG_RESULT([$is_glibc_234])
AM_CONDITIONAL([HAVE_GLIBC_234], [test "x$is_glibc_234" = "xyes"])
dnl Check for SELinux socket labelling (optional).
AC_ARG_WITH([selinux],
AS_HELP_STRING([--without-selinux], [disable SELinux support, used for socket labelling @<:@default=check@:>@]))
AS_IF([test "x$with_selinux" != xno], [
PKG_CHECK_MODULES([LIBSELINUX], [libselinux], [
AC_SUBST([LIBSELINUX_CFLAGS])
AC_SUBST([LIBSELINUX_LIBS])
AC_DEFINE([HAVE_LIBSELINUX],[1],[libselinux found at compile time.])
], [AC_MSG_WARN([libselinux not found, sockets will not be labeled.])])
])
AS_IF([test "x$with_selinux" = xyes && test "x$LIBSELINUX_LIBS" = x], [
AC_MSG_ERROR([selinux requested but not found])
])
dnl Check for GnuTLS (optional, for TLS support).
AC_ARG_WITH([gnutls],
[AS_HELP_STRING([--without-gnutls], [disable TLS support via GnuTLS @<:@default=check@:>@])])
AS_IF([test "x$with_gnutls" != xno], [
PKG_CHECK_MODULES([GNUTLS], [gnutls >= 3.3.0], [
AC_SUBST([GNUTLS_CFLAGS])
AC_SUBST([GNUTLS_LIBS])
AC_DEFINE([HAVE_GNUTLS],[1],[gnutls found at compile time.])
], [
AC_MSG_WARN([gnutls not found or < 3.3.0, TLS support will be disabled.])
])
])
AS_IF([test "x$with_gnutls" = xyes && test x"$GNUTLS_LIBS" = x], [
AC_MSG_ERROR([gnutls requested but not found])
])
AM_CONDITIONAL([HAVE_GNUTLS], [test "x$GNUTLS_LIBS" != "x"])
AS_IF([test "x$GNUTLS_LIBS" != "x"],[
AC_MSG_CHECKING([for default TLS session priority string])
AC_ARG_WITH([tls-priority],
[AS_HELP_STRING([--with-tls-priority=...],
[default TLS session priority string @<:@default=NORMAL@:>@])],
[tls_priority=$withval],
[tls_priority=NORMAL])
AC_MSG_RESULT([$tls_priority])
AC_DEFINE_UNQUOTED([TLS_PRIORITY],["$tls_priority"],
[Default TLS session priority string])
# Check for APIs which may not be present.
old_LIBS="$LIBS"
LIBS="$GNUTLS_LIBS $LIBS"
AC_CHECK_FUNCS([\
gnutls_base64_decode2 \
gnutls_certificate_set_known_dh_params \
gnutls_group_get \
gnutls_group_get_name \
gnutls_pbkdf2 \
gnutls_session_set_verify_cert \
gnutls_srp_server_get_username \
gnutls_transport_is_ktls_enabled \
])
AC_CHECK_HEADERS([gnutls/socket.h])
LIBS="$old_LIBS"
dnl macOS has its own program called certtool and packages the
dnl GnuTLS tool as "gnutls-certtool".
AC_CHECK_PROGS([CERTTOOL],[gnutls-certtool certtool],[certtool])
])
AM_CONDITIONAL([HAVE_GNUTLS_PBKDF2],
[test "x$GNUTLS_LIBS" != "x" && test "x$ac_cv_func_gnutls_pbkdf2" = xyes])
dnl Check for some commands used by the tests which should be the GNU
dnl coreutils variants. On macOS these are prefixed with 'g' or 'gnu'.
AC_CHECK_PROGS([CUT],[gnucut cut],[cut])
AC_CHECK_PROGS([STAT],[gstat stat],[stat])
AC_CHECK_PROGS([TRUNCATE],[gtruncate truncate],[truncate])
dnl Check for valgrind.
AC_CHECK_PROG([VALGRIND],[valgrind],[valgrind],[no])
dnl If valgrind headers are available (optional).
dnl Although the runtime check adds only a trivial amount of code, you can
dnl avoid it with explicit --disable-valgrind.
AC_ARG_ENABLE([valgrind],
[AS_HELP_STRING([--disable-valgrind],
[disable Valgrind probe])],
[],
[enable_valgrind=check])
AS_IF([test "x$enable_valgrind" != "xno"],[
PKG_CHECK_MODULES([VALGRIND], [valgrind], [
AC_SUBST([VALGRIND_CFLAGS])
AC_SUBST([VALGRIND_LIBS])
AC_DEFINE([HAVE_VALGRIND],[1],[Valgrind headers found at compile time])
],[
AS_IF([test "x$enable_valgrind" = "xyes"], [
AC_MSG_ERROR([--enable-valgrind given, but Valgrind headers are not available])
])
])
])
dnl Build the special libFuzzer version of nbdkit. DO NOT USE THIS for
dnl normal builds. See fuzzing/README.
AC_ARG_ENABLE([libfuzzer],
[AS_HELP_STRING([--enable-libfuzzer],
[build libFuzzer test binary (developers only)])],
[],
[enable_libfuzzer=no])
AS_IF([test "x$enable_libfuzzer" = "xyes"],[
AC_DEFINE([ENABLE_LIBFUZZER],[1],[Enable special libFuzzer binary])
# We have to disable the linker script for libFuzzer because Clang
# adds loads of fuzzer and ASAN-related symbols that are required
# by the plugins but which our linker script tries to hide.
use_linker_script=no
])
AM_CONDITIONAL([ENABLE_LIBFUZZER],[test "x$enable_libfuzzer" = "xyes"])
dnl Should we use the linker script (ld --version-script)? Note
dnl some tests above may set this variable.
AC_ARG_ENABLE([linker-script],
[AS_HELP_STRING([--disable-linker-script],
[disable linker script for server (developers only)])],
[use_linker_script=$enableval],
[])
AM_CONDITIONAL([USE_LINKER_SCRIPT],
[test "x$use_linker_script" = "xyes"])
dnl Bash completion.
AC_ARG_WITH([bash-completions],
[AS_HELP_STRING([--without-bash-completions], [disable installing bash completions @<:@default=check@:>@])])
AS_IF([test "x$with_bash_completions" != xno], [
PKG_CHECK_MODULES([BASH_COMPLETION], [bash-completion >= 2.0], [
bash_completion=yes
AC_MSG_CHECKING([for bash-completions directory])
m4_ifdef([PKG_CHECK_VAR],[
PKG_CHECK_VAR(bashcompdir, [bash-completion], [completionsdir])
])
AS_IF([test -z "$bashcompdir"], [
bashcompdir="${sysconfdir}/bash_completion.d"
])
AC_MSG_RESULT([$bashcompdir])
AC_SUBST([bashcompdir])
],[
bash_completion=no
AC_MSG_WARN([bash-completion not installed])
])
])
AS_IF([test "x$bash_completion" = xno && test "x$with_bash_completions" = xyes], [
AC_MSG_ERROR([bash-completions requested but required packages not found])
])
AM_CONDITIONAL([HAVE_BASH_COMPLETION],[test "x$bash_completion" = "xyes"])
dnl Check we have enough to run podwrapper.
AC_ARG_WITH([manpages],
[AS_HELP_STRING([--without-manpages],
[do not build man pages @<:@default=check@:>@])],
[],
[: m4_divert_text([DEFAULTS], [with_manpages=check])])
enable_pod=no
AC_CHECK_PROGS([PERL], [perl], [])
AS_IF([test "x$with_manpages" != xno], [
AS_IF([test "x$PERL" != "x"],[
AC_MSG_CHECKING([if we have perl Pod::Man and Pod::Simple])
AS_IF([$PERL -MPod::Man -MPod::Simple -e 1 >&AS_MESSAGE_LOG_FD 2>&1],[
enable_pod=yes
])
AC_MSG_RESULT([$enable_pod])
])
])
AS_IF([test "x$enable_pod" = xno && test "x$with_manpages" = xyes], [
AC_MSG_ERROR([man-pages requested but required packages not found])
])
AM_CONDITIONAL([HAVE_POD],
[test "x$PERL" != "xno" && test "x$enable_pod" = "xyes"])
dnl Define the path to the podwrapper program.
PODWRAPPER="$PERL $(pwd)/podwrapper.pl"
AC_SUBST([PODWRAPPER])
dnl Allow all plugins and filters to be disabled.
AC_ARG_ENABLE([plugins],
[AS_HELP_STRING([--disable-plugins],
[disable all bundled plugins and filters])])
AM_CONDITIONAL([HAVE_PLUGINS], [test "x$enable_plugins" != "xno"])
dnl For the cc plugin, let the user hard-code their preferred compiler setup
dnl Default to the settings used for nbdkit itself
AC_ARG_VAR([CC_PLUGIN_CC],
[value to hard-code into the cc plugin's default for CC, instead of $CC])
: "${CC_PLUGIN_CC:=$CC}"
AC_ARG_VAR([CC_PLUGIN_CFLAGS],
[value to hard-code into the cc plugin's default for CFLAGS, instead of
$CFLAGS])
: "${CC_PLUGIN_CFLAGS:=$CFLAGS}"
dnl Check for Perl, for embedding in the perl plugin.
dnl Note that the perl binary is checked above.
AC_ARG_ENABLE([perl],
[AS_HELP_STRING([--disable-perl], [disable Perl embed plugin])],
[],
[enable_perl=yes])
AS_IF([test "x$PERL" != "xno" && test "x$enable_perl" != "xno"],[
dnl Check for Perl archlib.
AC_MSG_CHECKING([for Perl embed archlib])
PERL_ARCHLIB="$($PERL -MConfig -e 'print $Config{archlib}')"
AS_IF([ test -n "$PERL_ARCHLIB" ],[
AC_MSG_RESULT([$PERL_ARCHLIB])
],[
AC_MSG_NOTICE([Perl embed module disabled])
enable_perl=no
])
dnl Check for Perl CFLAGS.
AC_MSG_CHECKING([for Perl embed CFLAGS])
PERL_CFLAGS="$($PERL -MExtUtils::Embed -e 'ccflags')"
AS_IF([ test -n "$PERL_CFLAGS" ],[
AC_MSG_RESULT([$PERL_CFLAGS])
],[
AC_MSG_NOTICE([Perl embed module disabled])
enable_perl=no
])
dnl Check for Perl LDOPTS.
AC_MSG_CHECKING([for Perl embed LDOPTS])
PERL_LDOPTS="$($PERL -MExtUtils::Embed -e 'ldopts')"
AC_MSG_RESULT([$PERL_LDOPTS])
dnl Check these actually work.
old_CFLAGS="$CFLAGS"
old_LIBS="$LIBS"
CFLAGS="$PERL_CFLAGS -I$PERL_ARCHLIB/CORE $CFLAGS"
LIBS="$PERL_LDOPTS $LIBS"
AC_CHECK_FUNCS([perl_alloc])
CFLAGS="$old_CFLAGS"
LIBS="$old_LIBS"
AC_MSG_CHECKING([whether Perl modules will compile])
if test "x$ac_cv_func_perl_alloc" = xyes; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
enable_perl=no
fi
])
AM_CONDITIONAL([HAVE_PERL],[test "x$enable_perl" != "xno" && test "x$PERL" != "xno"])
AC_SUBST([PERL_ARCHLIB])
AC_SUBST([PERL_CFLAGS])
AC_SUBST([PERL_LDOPTS])
dnl Check for Python 3, for embedding in the python plugin.
AC_PATH_PROGS([PYTHON],[python3 python],[no])
AC_ARG_ENABLE([python],
[AS_HELP_STRING([--disable-python], [disable Python embed plugin])],
[],
[enable_python=yes])
AS_IF([test "x$PYTHON" != "xno" && test "x$enable_python" != "xno"],[
AC_MSG_CHECKING([version of $PYTHON])
PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info@<:@0@:>@)"`
PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info@<:@1@:>@)"`
PYTHON_VERSION="$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR"
AS_IF([test -n "$PYTHON_VERSION"],[
AC_MSG_RESULT([$PYTHON_VERSION])
],[
AC_MSG_NOTICE([Python embed module disabled])
enable_python=no
])
AC_MSG_CHECKING([Python major version is 3])
AS_IF([test "x$PYTHON_VERSION_MAJOR" = "x3"],[
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([Python $PYTHON_VERSION_MAJOR <> 3 is no longer supported.
Python 2 end of life was 2020-01-01 and nbdkit >= 1.16 no longer
supports it.
If you want to use Python 2, you will need to use nbdkit 1.14.])
])
dnl Check for Python CFLAGS, libraries.
dnl For Python >= 3.8 we have to use python-<VERSION>-embed.pc, see:
dnl https://docs.python.org/3.8/whatsnew/3.8.html#debug-build-uses-the-same-abi-as-release-build
dnl The python.pc is called python-<VERSION>.pc on Debian and
dnl later versions of Fedora, and python.pc on older versions
dnl of Fedora.
PKG_CHECK_MODULES([PYTHON], [python-$PYTHON_VERSION-embed], [
AC_SUBST([PYTHON_CFLAGS])
AC_SUBST([PYTHON_LIBS])
AC_SUBST([PYTHON_VERSION])
AC_DEFINE([HAVE_PYTHON],[1],[Python library found at compile time])
],[
PKG_CHECK_MODULES([PYTHON], [python-$PYTHON_VERSION], [
AC_SUBST([PYTHON_CFLAGS])
AC_SUBST([PYTHON_LIBS])
AC_SUBST([PYTHON_VERSION])
AC_DEFINE([HAVE_PYTHON],[1],[Python library found at compile time])
],[
PKG_CHECK_MODULES([PYTHON], [python], [
AC_SUBST([PYTHON_CFLAGS])
AC_SUBST([PYTHON_LIBS])
AC_SUBST([PYTHON_VERSION])
AC_DEFINE([HAVE_PYTHON],[1],[Python library found at compile time])
],[
AC_MSG_WARN([python $PYTHON_VERSION not found])
enable_python=no
])])])
])
AM_CONDITIONAL([HAVE_PYTHON],[test "x$enable_python" != "xno" && test "x$PYTHON" != "xno"])
AC_SUBST([PYTHON_CFLAGS])
AC_SUBST([PYTHON_LIBS])
AC_SUBST([PYTHON_LDFLAGS])
dnl For the OCaml plugin, you can set OCAMLOPTFLAGS before running
dnl ./configure to specify any extra flags you want to pass to
dnl ocamlopt. For example to enable debug symbols & warnings:
dnl OCAMLOPTFLAGS="-g -warn-error +A-3"
AC_SUBST([OCAMLOPTFLAGS])
dnl Check for OCaml, for embedding in the ocaml plugin.
AC_PROG_OCAML
AC_ARG_ENABLE([ocaml],
[AS_HELP_STRING([--disable-ocaml], [disable OCaml embed plugin])],
[],
[enable_ocaml=yes])
AS_IF([test "x$OCAMLOPT" != "xno" && test "x$enable_ocaml" != "xno"],[
dnl Check OCaml can create a shared library (see README for details).
AC_MSG_CHECKING([if $OCAMLOPT can create a shared library])
echo 'print_endline "test"' > conftest.ml
AS_IF([$OCAMLOPT $OCAMLOPTFLAGS -output-obj -runtime-variant _pic -o conftest.so conftest.ml >&AS_MESSAGE_LOG_FD 2>&1],[
AC_MSG_RESULT([yes])
ocaml_link_shared=yes
],[
AC_MSG_RESULT([no])
])
rm -f conftest.ml conftest.cmi conftest.cmx conftest.so conftest.o
])
AM_CONDITIONAL([HAVE_OCAML],[test "x$OCAMLOPT" != "xno" &&
test "x$ocaml_link_shared" = "xyes"])
AM_CONDITIONAL([HAVE_OCAMLDOC],[test "x$OCAMLDOC" != "xno"])
AS_IF([test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \
test "x$enable_ocaml" = "xyes"],[
dnl Check for how to link OCaml plugins.
AC_MSG_CHECKING([major version of OCaml])
[OCAML_MAJOR=` echo $OCAMLVERSION | $SED 's/\([[:digit:]]*\).*/\1/' `]
AC_MSG_RESULT([$OCAML_MAJOR])
AC_SUBST([OCAML_MAJOR])
AC_MSG_CHECKING([for what libraries are needed for OCaml plugins])
AS_IF([test $OCAML_MAJOR -ge 5],[
OCAML_PLUGIN_LIBRARIES="-I +unix unix.cmxa -I +threads threads.cmxa"
],[
OCAML_PLUGIN_LIBRARIES="unix.cmxa"
])
AC_MSG_RESULT([$OCAML_PLUGIN_LIBRARIES])
AC_SUBST([OCAML_PLUGIN_LIBRARIES])
dnl Check if OCaml has caml_alloc_initialized_string (added 2017).
AC_MSG_CHECKING([for caml_alloc_initialized_string])
cat >conftest.c <<'EOF'
#include <caml/alloc.h>
int main () { char *p = (void *) caml_alloc_initialized_string; return 0; }
EOF
AS_IF([$OCAMLC conftest.c >&AS_MESSAGE_LOG_FD 2>&1],[