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30 lines
1.2 KiB
30 lines
1.2 KiB
From 99264b7352e9b89bfa8cfb2862a9fabd9eb5d764 Mon Sep 17 00:00:00 2001
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From: Yaakov Selkowitz <yselkowi@redhat.com>
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Date: Tue, 19 Dec 2023 13:13:25 -0500
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Subject: [PATCH] BUILD/CONFIG: Keep CFLAGS and CXXFLAGS separate
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If configured with CFLAGS containing flags which are specific to C and invalid in CXX, this results in errors when compiling src/tools/perf/lib/uc[pt]_tests.cc:
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```
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cc1plus: error: '-Werror=' argument '-Werror=implicit-function-declaration' is not valid for C++ [-Werror]
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cc1plus: error: '-Werror=' argument '-Werror=implicit-int' is not valid for C++ [-Werror]
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```
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This is currently breaking the build in Fedora 40 (rawhide) and ELN (the future RHEL 10).
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---
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config/m4/compiler.m4 | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/config/m4/compiler.m4 b/config/m4/compiler.m4
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index 6aa3360e76a..2719e98983b 100644
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--- a/config/m4/compiler.m4
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+++ b/config/m4/compiler.m4
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@@ -222,7 +222,7 @@ AC_DEFUN([CHECK_COMPILER_FLAG],
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[
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AC_MSG_CHECKING([compiler flag $1])
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SAVE_CFLAGS="$CFLAGS"
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- SAVE_CXXFLAGS="$CFLAGS"
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+ SAVE_CXXFLAGS="$CXXFLAGS"
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CFLAGS="$BASE_CFLAGS $CFLAGS $2"
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CXXFLAGS="$BASE_CXXFLAGS $CXXFLAGS $2"
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AC_LINK_IFELSE([$3],
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