mirror of
https://gitlab.freedesktop.org/libbsd/libbsd.git
synced 2025-01-24 10:59:29 +01:00
f41fdcf186
This is a wrapper over the glibc fopencookie() function. We diverge from the FreeBSD, OpenBSD and DragonFlyBSD declarations, because seekfn() there wrongly uses fpos_t, assuming it's an integral type, and any code using that on a system where fpos_t is a struct (such as GNU-based systems or NetBSD) will fail to build. In which case, as the code has to be modified anyway, we might just as well use the correct declaration.
141 lines
3.6 KiB
Plaintext
141 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([1.9 foreign nostdinc subdir-objects 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=6
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LIBBSD_ABI_PATCH=0
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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 fopencookie __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-ctor.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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