mirror of
https://gitlab.freedesktop.org/libbsd/libbsd.git
synced 2025-01-24 02:51:43 +01:00
3077d2fffc
It's easier to find there, and the value can be reused in case we have to provide another shared library.
140 lines
3.6 KiB
Plaintext
140 lines
3.6 KiB
Plaintext
# Process this file with autoconf to produce a configure script.
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AC_PREREQ([2.67])
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AC_INIT([libbsd], m4_esyscmd([./get-version]), [libbsd@lists.freedesktop.org])
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AC_CONFIG_SRCDIR([src/fgetln.c])
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AC_CONFIG_AUX_DIR([build-aux])
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AC_CONFIG_MACRO_DIR([m4])
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AM_INIT_AUTOMAKE([1.8 foreign nostdinc no-dist-gzip dist-xz])
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
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[AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])
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LIBBSD_ABI_MAJOR=0
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LIBBSD_ABI_MINOR=5
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LIBBSD_ABI_PATCH=2
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LIBBSD_ABI="$LIBBSD_ABI_MAJOR:$LIBBSD_ABI_MINOR:$LIBBSD_ABI_PATCH"
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AC_SUBST([LIBBSD_ABI])
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# Check and store if we got user supplied variables
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user_CFLAGS=${CFLAGS-unset}
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# Checks for operating system services and capabilities.
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AC_USE_SYSTEM_EXTENSIONS
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AC_SYS_LARGEFILE
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LT_INIT
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# Checks for programs.
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AC_PROG_CC
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AC_PROG_INSTALL
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AC_PROG_LN_S
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# Set default compiler variables
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if test "$user_CFLAGS" = unset && test "$GCC" = yes; then
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CFLAGS="$CFLAGS -Wall -Wextra -Wno-unused-variable -Wno-unused-parameter"
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fi
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# Checks for libraries.
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# Checks for header files.
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AC_CHECK_HEADERS([sys/ndir.h sys/dir.h dir.h dirent.h])
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# Checks for typedefs, structures, and compiler characteristics.
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AC_TYPE_UID_T
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AC_C_INLINE
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AC_C_TYPEOF
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AC_TYPE_INT64_T
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AC_TYPE_MODE_T
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AC_TYPE_OFF_T
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AC_TYPE_PID_T
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AC_TYPE_SIZE_T
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AC_TYPE_SSIZE_T
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AC_CHECK_DECL([F_CLOSEM],
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[AC_DEFINE([HAVE_FCNTL_CLOSEM], [1],
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[Define to 1 if you have fcntl(F_CLOSEM)])],
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[],
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[#include <limits.h>
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#include <fcntl.h>])
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AC_CACHE_CHECK(
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[for GNU .init_array section support],
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[libbsd_cv_gnu_init_array_support],
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[AC_RUN_IFELSE(
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[AC_LANG_SOURCE(
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[[
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static int rc = 1;
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static void init(int argc) { if (argc == 1) rc = 0; }
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void (*init_func)(int argc) __attribute__((section(".init_array"))) = init;
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int main() { return rc; }
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]]
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)],
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[libbsd_cv_gnu_init_array_support=yes],
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[libbsd_cv_gnu_init_array_support=no],
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[AC_PREPROC_IFELSE(
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[AC_LANG_SOURCE(
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[[
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/* Look for a known libc that supports .init_array with the GNU extension
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* to pass main() arguments to the init functions. */
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#include <stdlib.h>
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#if defined __GLIBC_PREREQ
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# if __GLIBC_PREREQ(2, 4)
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/* glibc supports GNU .init_array since 2.4. */
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# else
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# error glibc does not support GNU .init_array
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# endif
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#else
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/*
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* Basic SysV ABI .init_array support, init functions do not get arguments:
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* - Bionic since its inception.
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* - uClibc since 0.9.29.
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*/
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# error unknown whether libc supports GNU .init_array
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#endif
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]]
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)],
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[libbsd_cv_gnu_init_array_support=yes],
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[libbsd_cv_gnu_init_array_support=no])
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]
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)]
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)
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if test "$libbsd_cv_gnu_init_array_support" = no; then
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AC_MSG_ERROR([missing required GNU .init_array section support])
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fi
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# Checks for library functions.
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AC_MSG_CHECKING([for program_invocation_short_name])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[#include <errno.h>]],
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[[const char *p = program_invocation_short_name;]])],
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[AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
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[Define to 1 if you have program_invocation_short_name])
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AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])])
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AC_MSG_CHECKING([for __progname])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[]],
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[[extern char *__progname;
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const char *p = __progname;]])],
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[AC_DEFINE([HAVE___PROGNAME], [1], [Define to 1 if you have __progname])
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AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])])
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AC_CHECK_FUNCS([clearenv dirfd __fpurge getexecname getline sysconf])
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AC_CONFIG_FILES([
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Makefile
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include/Makefile
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man/Makefile
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src/Makefile
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src/libbsd.pc
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src/libbsd-overlay.pc
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test/Makefile
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])
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AC_CONFIG_HEADERS([config.h])
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AC_OUTPUT
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