[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[libmicrohttpd] 01/03: Added new M4 helper macro
From: |
gnunet |
Subject: |
[libmicrohttpd] 01/03: Added new M4 helper macro |
Date: |
Fri, 23 Dec 2022 15:49:39 +0100 |
This is an automated email from the git hooks/post-receive script.
karlson2k pushed a commit to branch master
in repository libmicrohttpd.
commit 84dfd52f13102cea21b2a932556fac49ed770cee
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
AuthorDate: Fri Dec 23 15:58:39 2022 +0300
Added new M4 helper macro
---
m4/mhd_check_link_run.m4 | 67 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
diff --git a/m4/mhd_check_link_run.m4 b/m4/mhd_check_link_run.m4
new file mode 100644
index 00000000..731ab81e
--- /dev/null
+++ b/m4/mhd_check_link_run.m4
@@ -0,0 +1,67 @@
+# SYNOPSIS
+#
+# MHD_CHECK_LINK_RUN(MESSAGE, CACHE_ID, COMMAND_IF_CROSS_COMPILING, INPUT,
+# [ACTION_IF_SUCCEED], [ACTION_IF_FAILED])
+#
+# DESCRIPTION
+#
+# Improved version of AC_RUN_IFELSE macro.
+# Unlike AC_RUN_IFELSE, this macro tries to link the code if cross-compiling.
+# Action COMMAND_IF_CROSS_COMPILING is executed only if link is succeed,
+# otherwise CACHE_ID variable set to "no".
+# COMMAND_IF_CROSS_COMPILING action must set CACHE_ID variable to "yes",
"no",
+# "assuming yes" or "assuming no".
+# ACTION_IF_SUCCEED is executed if result is "yes" or "assuming yes".
+# ACTION_IF_FAILED is execuded if result is "no" or "assuming no".
+#
+# Example usage:
+#
+# MHD_CHECK_LINK_RUN([for valid snprintf()], [mhd_cv_snprintf_valid],
+# AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
+# [if (4 != snprintf(NULL, 0, "test"))
+# return 2;])],
+# [mhd_cv_snprintf_valid='assuming no'])
+#
+#
+# LICENSE
+#
+# Copyright (c) 2022 Karlson2k (Evgeny Grin) <k2k@narod.ru>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 1
+
+AC_DEFUN([MHD_CHECK_LINK_RUN],[dnl
+m4_ifblank([$1],[m4_fatal([$0: The first macro argument ("MESSAGE") must not
be empty])])dnl
+m4_ifblank([$2],[m4_fatal([$0: The second macro argument ("CACHE_ID") must not
be empty])])dnl
+m4_ifblank([$3],[m4_fatal([$0: The third macro argument
("COMMAND_IF_CROSS_COMPILING") ]dnl
+[must not be empty])])dnl
+m4_ifblank([$4],[m4_fatal([$0: The fourth macro argument ("INPUT") must not be
empty])])dnl
+m4_bmatch(_mhd_norm_expd([$2]),[\s],dnl
+[m4_fatal([$0: The second macro argument ("CACHE_ID") must not contain
whitespaces])])dnl
+m4_bmatch(_mhd_norm_expd([$3]),[\<]m4_re_escape(_mhd_norm_expd([$2]))[\>],[],dnl
+[m4_fatal([$0: The third macro argument ("COMMAND_IF_CROSS_COMPILING") must
assign ]dnl
+[a value to the cache variable ']_mhd_norm_expd([$2])['])])dnl
+m4_pushdef([cacheVar],_mhd_norm_expd([$2]))dnl
+AC_CACHE_CHECK([$1],[$2],
+[
+AC_LANG_CONFTEST([$4])
+AS_VAR_IF([cross_compiling],["yes"],
+[AC_LINK_IFELSE([],[
+$3
+],[cacheVar='no'])dnl AC_LINK_IFELSE
+],dnl
+[AC_RUN_IFELSE([],[cacheVar='yes'],[cacheVar='no'],[[# Dummy placeholder]])
+])
+rm -f conftest.$ac_ext
+])
+m4_ifnblank([$5],[
+AS_IF([test "x$cacheVar" = "xyes" || test "x$cacheVar" = "xassuming
yes"],[$5])dnl AS_IF
+])dnl m4_ifnblank
+m4_ifnblank([$6],[
+AS_IF([test "x$cacheVar" = "xno" || test "x$cacheVar" = "xassuming
no"],[$6])dnl AS_IF
+])dnl m4_ifnblank
+])dnl AC_DEFUN
--
To stop receiving notification emails like this one, please contact
gnunet@gnunet.org.