mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-18 12:24:38 +08:00
44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
|
# getprogname.m4 - check for getprogname or replacements for it
|
||
|
|
|
||
|
|
# Copyright (C) 2016 Free Software Foundation, Inc.
|
||
|
|
# This file is free software; the Free Software Foundation
|
||
|
|
# gives unlimited permission to copy and/or distribute it,
|
||
|
|
# with or without modifications, as long as this notice is preserved.
|
||
|
|
|
||
|
|
# serial 4
|
||
|
|
|
||
|
|
AC_DEFUN([gl_FUNC_GETPROGNAME],
|
||
|
|
[
|
||
|
|
AC_CHECK_FUNCS_ONCE([getprogname getexecname])
|
||
|
|
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
|
||
|
|
ac_found=0
|
||
|
|
AC_CHECK_DECLS([program_invocation_name], [ac_found=1], [],
|
||
|
|
[#include <errno.h>])
|
||
|
|
AC_CHECK_DECLS([program_invocation_short_name], [ac_found=1], [],
|
||
|
|
[#include <errno.h>])
|
||
|
|
AC_CHECK_DECLS([__argv], [ac_found=1], [], [#include <stdlib.h>])
|
||
|
|
|
||
|
|
# Incur the cost of this test only if none of the above worked.
|
||
|
|
if test $ac_found = 0; then
|
||
|
|
# On OpenBSD 5.1, using the global __progname variable appears to be
|
||
|
|
# the only way to implement getprogname.
|
||
|
|
AC_CACHE_CHECK([whether __progname is defined in default libraries],
|
||
|
|
[gl_cv_var___progname],
|
||
|
|
[
|
||
|
|
gl_cv_var___progname=
|
||
|
|
AC_LINK_IFELSE(
|
||
|
|
[AC_LANG_PROGRAM(
|
||
|
|
[[extern char *__progname;]],
|
||
|
|
[[return *__progname;]]
|
||
|
|
)],
|
||
|
|
[gl_cv_var___progname=yes]
|
||
|
|
)
|
||
|
|
]
|
||
|
|
)
|
||
|
|
if test "$gl_cv_var___progname" = yes; then
|
||
|
|
AC_DEFINE([HAVE_VAR___PROGNAME], 1,
|
||
|
|
[Define if you have a global __progname variable])
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
])
|