Date: Tue, 10 Nov 2015 12:59:57 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 83995] CFLAGS & COPTFLAGS ambiguous behaviour Message-ID: <bug-83995-8-uWb6OQAb7g@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-83995-8@https.bugs.freebsd.org/bugzilla/> References: <bug-83995-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=83995 NGie Cooper <ngie@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://bugs.freebsd.org/bu | |gzilla/show_bug.cgi?id=1901 | |03, | |https://bugs.freebsd.org/bu | |gzilla/show_bug.cgi?id=1937 | |68 CC| |bdrewery@FreeBSD.org, | |imp@FreeBSD.org, | |ngie@FreeBSD.org --- Comment #1 from NGie Cooper <ngie@FreeBSD.org> --- Agreed. This logic is broken/confusing: 38 .if defined(DEBUG) 39 _MINUS_O= -O 40 CTFFLAGS+= -g 41 .else 42 .if ${MACHINE_CPUARCH} == "powerpc" 43 _MINUS_O= -O # gcc miscompiles some code at -O2 44 .else 45 _MINUS_O= -O2 46 .endif 47 .endif 48 .if ${MACHINE_CPUARCH} == "amd64" 49 .if ${COMPILER_TYPE} == "clang" 50 COPTFLAGS?=-O2 -pipe 51 .else 52 COPTFLAGS?=-O2 -frename-registers -pipe 53 .endif 54 .else 55 COPTFLAGS?=${_MINUS_O} -pipe 56 .endif 57 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 58 COPTFLAGS+= -fno-strict-aliasing 59 .endif 60 .if !defined(NO_CPU_COPTFLAGS) 61 COPTFLAGS+= ${_CPUCFLAGS} 62 .endif In particular, clang's version of COPTFLAGS always override the ${_MINUS_O}, -O on clang is synonymous with -O2, etc. brewery was complaining about this as well the other day/week. -- You are receiving this mail because: You are the assignee for the bug.
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