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authorJörg Frings-Fürst <debian@jff-webhosting.net>2017-03-27 21:42:03 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2017-03-27 21:42:03 +0200
commitdb6f1f397f45ccd3c11d16352ed46a9c1eae3442 (patch)
treee0b9334e2637f17696c796ac13b2c39294bf9233 /gnulib-m4/getprogname.m4
parent0250cb64565a7d5238bbc751225d4b0236ef8316 (diff)
parent6b73edd95d603e27d55d4905134ac1327d426534 (diff)
Merge tag 'upstream/0.9.7'
Upstream version 0.9.7
Diffstat (limited to 'gnulib-m4/getprogname.m4')
-rw-r--r--gnulib-m4/getprogname.m443
1 files changed, 43 insertions, 0 deletions
diff --git a/gnulib-m4/getprogname.m4 b/gnulib-m4/getprogname.m4
new file mode 100644
index 0000000..f027037
--- /dev/null
+++ b/gnulib-m4/getprogname.m4
@@ -0,0 +1,43 @@
+# 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
+])