[OMPT-svn-commit] OpenMPT r21179 - trunk/OpenMPT/build/autotools

[<sv...@op...>]

Author: manx
Date: Sun Jul 14 18:56:24 2024
New Revision: 21179
URL: https://source.openmpt.org/browse/openmpt/?op=revision&rev=21179

Log:
[Fix] build: Autotools: Work-around for <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115049> in Autotools by setting -fno-ipa-ra for all compilers that support this option. This is overly pessimistic, but we have no easy way to check for a specific compiler here, and this is necessary for GCC 8 or earlier which we still support and where we cannot use #pragma GCC optimize.

Modified:
   trunk/OpenMPT/build/autotools/configure.ac

Modified: trunk/OpenMPT/build/autotools/configure.ac
==============================================================================
--- trunk/OpenMPT/build/autotools/configure.ac	Sun Jul 14 18:53:54 2024	(r21178)
+++ trunk/OpenMPT/build/autotools/configure.ac	Sun Jul 14 18:56:24 2024	(r21179)
@@ -54,6 +54,18 @@
  []
 )
 
+# work-around <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115049>
+# This is somewhat pessimistic, but necessary for GCC 8 or earlier,
+# which we still support and where we cannot use #pragma GCC optimize.
+AC_LANG_PUSH([C])
+AX_CHECK_COMPILE_FLAG([-fno-ipa-ra], [CFLAGS="$CFLAGS -fno-ipa-ra"])
+AX_CFLAGS_WARN_ALL
+AC_LANG_POP([C])
+AC_LANG_PUSH([C++])
+AX_CHECK_COMPILE_FLAG([-fno-ipa-ra], [CXXFLAGS="$CXXFLAGS -fno-ipa-ra"])
+AX_CXXFLAGS_WARN_ALL
+AC_LANG_POP([C++])
+
 
 LIBOPENMPT_LTVER_CURRENT=!!MPT_LIBOPENMPT_LTVER_CURRENT!!
 LIBOPENMPT_LTVER_REVISION=!!MPT_LIBOPENMPT_LTVER_REVISION!!