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build: Refactor function checks into a new libbsd-funcs.m4 file

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These are complex enough to clutter the main configure.ac. Move them
into their own file.
This commit is contained in:
Guillem Jover 2024-02-20 04:40:32 +01:00
parent f8cb9d8b28
commit b6d6da4cd4
2 changed files with 59 additions and 47 deletions
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49
configure.ac
View File

@ -187,53 +187,8 @@ AC_CHECK_DECLS([environ], [], [], [[
LIBBSD_HAS_GNU_INIT_ARRAY
# 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([[
#include <stdio.h>
extern char *__progname;
]], [[
printf("%s", __progname);
]])
], [
AC_DEFINE([HAVE___PROGNAME], [1], [Define to 1 if you have __progname])
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
AC_MSG_CHECKING([for __register_atfork])
AC_LINK_IFELSE([
AC_LANG_PROGRAM([[
#include <stddef.h>
extern void *__dso_handle;
extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
]], [[
__register_atfork(NULL, NULL, NULL, __dso_handle);
]])
], [
AC_DEFINE([HAVE___REGISTER_ATFORK], [1],
[Define to 1 if you have __register_atfork])
AC_MSG_RESULT([yes])
], [
LIBBSD_LIBS="$LIBBSD_LIBS -pthread"
AC_MSG_RESULT([no])
])
LIBBSD_CHECK_PROGNAME
LIBBSD_CHECK_REGISTER_ATFORK
AC_CHECK_FUNCS([\
clearenv \

57
m4/libbsd-funcs.m4 Normal file
View File

@ -0,0 +1,57 @@
# Copyright © 2011-2024 Guillem Jover <guillem@hadrons.org>
# LIBBSD_CHECK_PROGNAME
# ---------------------
AC_DEFUN([LIBBSD_CHECK_PROGNAME], [
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([[
#include <stdio.h>
extern char *__progname;
]], [[
printf("%s", __progname);
]])
], [
AC_DEFINE([HAVE___PROGNAME], [1], [Define to 1 if you have __progname])
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
])
# LIBBSD_CHECK_REGISTER_ATFORK
# ----------------------------
AC_DEFUN([LIBBSD_CHECK_REGISTER_ATFORK], [
AC_MSG_CHECKING([for __register_atfork])
AC_LINK_IFELSE([
AC_LANG_PROGRAM([[
#include <stddef.h>
extern void *__dso_handle;
extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
]], [[
__register_atfork(NULL, NULL, NULL, __dso_handle);
]])
], [
AC_DEFINE([HAVE___REGISTER_ATFORK], [1],
[Define to 1 if you have __register_atfork])
AC_MSG_RESULT([yes])
], [
LIBBSD_LIBS="$LIBBSD_LIBS -pthread"
AC_MSG_RESULT([no])
])
])