kc3-lang/libbsd/configure.ac

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• Hash : 9a9a8b2d
  Author :
  Date : 2015-09-23T19:39:47
  

  Add private getentropy module from OpenBSD and LibreSSL Adapt the code to the local build system.

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• configure.ac

• # Process this file with autoconf to produce a configure script.
  
  AC_PREREQ([2.67])
  AC_INIT([libbsd], m4_esyscmd([./get-version]), [libbsd@lists.freedesktop.org])
  AC_CONFIG_SRCDIR([src/fgetln.c])
  AC_CONFIG_AUX_DIR([build-aux])
  AC_CONFIG_MACRO_DIR([m4])
  
  AM_INIT_AUTOMAKE([1.9 foreign nostdinc subdir-objects no-dist-gzip dist-xz])
  
  m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
                              [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])
  
  LIBBSD_ABI_MAJOR=0
  LIBBSD_ABI_MINOR=8
  LIBBSD_ABI_PATCH=0
  
  LIBBSD_ABI="$LIBBSD_ABI_MAJOR:$LIBBSD_ABI_MINOR:$LIBBSD_ABI_PATCH"
  AC_SUBST([LIBBSD_ABI])
  
  # Check and store if we got user supplied variables
  user_CFLAGS=${CFLAGS-unset}
  
  # Checks for operating system services and capabilities.
  AC_USE_SYSTEM_EXTENSIONS
  AC_SYS_LARGEFILE
  
  LT_INIT
  
  # Checks for programs.
  AC_PROG_CC
  AC_PROG_INSTALL
  AC_PROG_LN_S
  
  # Set default compiler variables
  if test "$user_CFLAGS" = unset && test "$GCC" = yes; then
    CFLAGS="$CFLAGS -Wall -Wextra -Wno-unused-variable -Wno-unused-parameter"
  fi
  
  # Checks for libraries.
  AC_CHECK_LIB([testu01], [unif01_CreateExternGenBits],
               [TESTU01_LIBS="-ltestu01"])
  AC_SUBST([TESTU01_LIBS])
  AM_CONDITIONAL([HAVE_LIBTESTU01],
                 [test "x$ac_cv_lib_testu01_unif01_CreateExternGenBits" = "xyes"])
  
  # Checks for header files.
  AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h])
  
  # Checks for typedefs, structures, and compiler characteristics.
  AC_TYPE_UID_T
  AC_C_INLINE
  AC_C_TYPEOF
  AC_TYPE_INT64_T
  AC_TYPE_MODE_T
  AC_TYPE_OFF_T
  AC_TYPE_PID_T
  AC_TYPE_SIZE_T
  AC_TYPE_SSIZE_T
  
  AC_CHECK_DECL([F_CLOSEM],
                [AC_DEFINE([HAVE_FCNTL_CLOSEM], [1],
                           [Define to 1 if you have fcntl(F_CLOSEM)])],
                [],
                [#include <limits.h>
                 #include <fcntl.h>])
  
  AC_CACHE_CHECK(
  	[for GNU .init_array section support],
  	[libbsd_cv_gnu_init_array_support],
  	[AC_RUN_IFELSE(
  		[AC_LANG_SOURCE(
  [[
  static int rc = 1;
  static void init(int argc) { if (argc == 1) rc = 0; }
  void (*init_func)(int argc) __attribute__((section(".init_array"))) = init;
  int main() { return rc; }
  ]]
  		)],
  		[libbsd_cv_gnu_init_array_support=yes],
  		[libbsd_cv_gnu_init_array_support=no],
  		[AC_PREPROC_IFELSE(
  			[AC_LANG_SOURCE(
  [[
  /* Look for a known libc that supports .init_array with the GNU extension
   * to pass main() arguments to the init functions. */
  #include <stdlib.h>
  #if defined __GLIBC_PREREQ
  #  if __GLIBC_PREREQ(2, 4)
  /* glibc supports GNU .init_array since 2.4. */
  #  else
  #    error glibc does not support GNU .init_array
  #  endif
  #else
  /*
   * Basic SysV ABI .init_array support, init functions do not get arguments:
   * - Bionic since its inception.
   * - uClibc since 0.9.29.
   */
  #  error unknown whether libc supports GNU .init_array
  #endif
  ]]
  			)],
  			[libbsd_cv_gnu_init_array_support=yes],
  			[libbsd_cv_gnu_init_array_support=no])
  		]
  	)]
  )
  AM_CONDITIONAL([BUILD_LIBBSD_CTOR],
                 [test "$libbsd_cv_gnu_init_array_support" = yes])
  
  # Checks for library functions.
  AC_MSG_CHECKING([for program_invocation_short_name])
  AC_LINK_IFELSE(
  	[AC_LANG_PROGRAM([[#include <errno.h>]],
  	                 [[const char *p = program_invocation_short_name;]])],
  	[AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
  	           [Define to 1 if you have program_invocation_short_name])
  	 AC_MSG_RESULT([yes])],
  	[AC_MSG_RESULT([no])])
  
  AC_MSG_CHECKING([for __progname])
  AC_LINK_IFELSE(
  	[AC_LANG_PROGRAM([[]],
  	                 [[extern char *__progname;
  	                   const char *p = __progname;]])],
  	[AC_DEFINE([HAVE___PROGNAME], [1], [Define to 1 if you have __progname])
  	 AC_MSG_RESULT([yes])],
  	[AC_MSG_RESULT([no])])
  
  AC_CHECK_FUNCS([clearenv dirfd fopencookie __fpurge \
                  getauxval getentropy getexecname getline \
                  pstat_getproc sysconf])
  AM_CONDITIONAL(HAVE_GETENTROPY, [test "x$ac_cv_func_getentropy" = "xtrue"])
  
  AC_CONFIG_FILES([
  	Makefile
  	include/Makefile
  	man/Makefile
  	src/Makefile
  	src/libbsd.pc
  	src/libbsd-ctor.pc
  	src/libbsd-overlay.pc
  	test/Makefile
  ])
  AC_CONFIG_HEADERS([config.h])
  AC_OUTPUT
  

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