imported http://git.cryp.to/autoconf-archive

Merge branch 'pre-savannah-history'

1 files changed, 91 insertions, 0 deletions

diff --git a/m4/ac_check_func_in.m4 b/m4/ac_check_func_in.m4
new file mode 100644
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+++ b/m4/ac_check_func_in.m4
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+# ===========================================================================
+#            http://autoconf-archive.cryp.to/ac_check_func_in.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AC_CHECK_FUNC_IN(HEADER, FUNCTION [,ACTION-IF-FOUNC [,ACTION-IF-NOT-FOUND]])
+#
+# DESCRIPTION
+#
+#   Checking for library functions in a given header file.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+dnl AC_CHECK_FUNC_IN(HEADER, FUNCTION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN([AC_CHECK_FUNC_IN],
+[AC_MSG_CHECKING([for $2 in $1])
+AC_CACHE_VAL(ac_cv_func_$2,
+[AC_TRY_LINK(
+dnl Don't include <ctype.h> because on OSF/1 3.0 it includes <sys/types.h>
+dnl which includes <sys/select.h> which contains a prototype for
+dnl select.  Similarly for bzero.
+[/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2(); below.  */
+#include <assert.h>
+#include <$1>
+/* Override any gcc2 internal prototype to avoid an error.  */
+]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+extern "C"
+#endif
+])dnl
+[/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $2();
+], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$2) || defined (__stub___$2)
+choke me
+#else
+$2();
+#endif
+], eval "ac_cv_func_$2=yes", eval "ac_cv_func_$2=no")])
+if eval "test \"`echo '$ac_cv_func_'$2`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$3], , :, [$3])
+else
+  AC_MSG_RESULT(no)
+ifelse([$4], , , [$4
+])dnl
+fi
+])
+
+dnl AC_CHECK_FUNCS_IN(HEADER, FUNCTION... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN([AC_CHECK_FUNCS_IN],
+[for ac_func in $2
+do
+AC_CHECK_FUNC_IN($1, $ac_func,
+  ac_tr_func=HAVE_`echo $ac_func | sed -e 'y:abcdefghijklmnopqrstuvwxyz:ABCDEFGHIJKLMNOPQRSTUVWXYZ:' -e 's:[[^A-Z0-9]]:_:g'`
+  AC_DEFINE_UNQUOTED($ac_tr_func) $3], $4)dnl
+done
+])