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33 lines
1.3 KiB
33 lines
1.3 KiB
commit 264a4a0dbe1f4369db315080034b500bed66016c
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Author: fanquake <fanquake@gmail.com>
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Date: Fri May 6 11:03:04 2022 +0100
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build: use -fcommon to retain legacy behaviour with GCC 10
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GCC 10 started using -fno-common by default, which causes issues with
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the powerpc builds using gibc 2.24. A patch was commited to glibc to fix
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the issue, 18363b4f010da9ba459b13310b113ac0647c2fcc but is non-trvial
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to backport, and was broken in at least one way, see the followup in
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commit 7650321ce037302bfc2f026aa19e0213b8d02fe6.
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For now, retain the legacy GCC behaviour by passing -fcommon when
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building glibc.
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https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html.
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https://sourceware.org/git/?p=glibc.git;a=commit;h=18363b4f010da9ba459b13310b113ac0647c2fcc
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https://sourceware.org/git/?p=glibc.git;a=commit;h=7650321ce037302bfc2f026aa19e0213b8d02fe6
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diff --git a/Makeconfig b/Makeconfig
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index ee379f5852..63c4a2f234 100644
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--- a/Makeconfig
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+++ b/Makeconfig
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@@ -824,7 +824,7 @@ ifeq "$(strip $(+cflags))" ""
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+cflags := $(default_cflags)
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endif # $(+cflags) == ""
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-+cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags)
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++cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) -fcommon
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+gcc-nowarn := -w
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# Don't duplicate options if we inherited variables from the parent.
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