1 files changed, 43 insertions, 0 deletions

diff --git a/m4/mhd_check_cc_ldflag.m4 b/m4/mhd_check_cc_ldflag.m4
new file mode 100644
index 00000000..e5f57953
--- /dev/null
+++ b/m4/mhd_check_cc_ldflag.m4
@@ -0,0 +1,43 @@
+# SYNOPSIS
+#
+#   MHD_CHECK_CC_LDFLAG([FLAG-TO-TEST], [VARIABLE-TO-PREPEND-LDFLAGS],
+#                       [ACTION-IF-SUPPORTED], [ACTION-IF-NOT-SUPPORTED])
+#
+# DESCRIPTION
+#
+#   This macro checks whether the specific compiler flag is supported.
+#   The check is performing by prepending FLAG-TO-TEST to LDFLAGS, then
+#   prepending value of VARIABLE-TO-PREPEND-LDFLAGS (if any) to LDFLAGS, and
+#   then performing compile and link test. If test succeed without warnings,
+#   then the flag is considered to be suppoted. Otherwise, if compile and link
+#   without test flag can be done without any warning, the flag is considered
+#   to be unsuppoted.
+#
+#   Example usage:
+#
+#     MHD_CHECK_CC_LDFLAG([-pie], [additional_LDFLAGS],
+#                         [additional_LDFLAGS="${additional_LDFLAGS} -pie"])
+#
+#   Defined cache variable used in check so if any test will not work
+#   correctly on some platform, user may simply fix it by giving cache
+#   variable in configure parameters, for example:
+#
+#     ./configure mhd_cv_cc_fl_supp__wshadow=no
+#
+#   This simplify building from source on exotic platforms as patching
+#   of configure.ac is not required to change results of tests.
+#
+# 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_CC_LDFLAG],[dnl
+_MHD_CHECK_CC_XFLAG([$1],[$2],[$3],[$4],[[LDFLAGS]])dnl
+])