7b3702e2dd
Successfully tested both the gcc4 compiler on x86_64 with a simple program (fbdebug) and the gcc4-armhf cross-compiler to build a very old u-boot port for Galaxy Nexus (a MR will follow soon) which failed to boot with either newer version (6 and 8). [skip ci]: already went through
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
When cross compiling a target gcc, target flags may be used on the host
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Configure identifies a number of warning flags (WARN_CFLAGS and
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WARN_CXXFLAGS) from the $CC value. The cross compiler may be different
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from the host compiler and may not support the same set of flags. This
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leads to problems such as:
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cc1plus: error: unrecognized command line option "-Wno-narrowing"
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cc1plus: error: unrecognized command line option "-Wno-overlength-strings"
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Work around this problem by removing the warning flags from the
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BUILD_CXXFLAGS value, in a way similar to the BUILD_CFLAGS.
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Upstream-Status: Pending
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Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
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Index: gcc-4.8.0/gcc/configure
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===================================================================
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--- gcc-4.8.0.orig/gcc/configure
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+++ gcc-4.8.0/gcc/configure
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@@ -11720,6 +10581,7 @@ STMP_FIXINC=stmp-fixinc
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if test x$build != x$host || test "x$coverage_flags" != x
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then
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BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
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+ BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
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BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
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fi
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Index: gcc-4.8.0/gcc/configure.ac
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===================================================================
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--- gcc-4.8.0.orig/gcc/configure.ac
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+++ gcc-4.8.0/gcc/configure.ac
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@@ -1901,6 +1901,7 @@ STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_F
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if test x$build != x$host || test "x$coverage_flags" != x
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then
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BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
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+ BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
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BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
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fi
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