From: Richard Biener Date: Fri, 13 Jan 2023 07:57:12 +0000 (+0100) Subject: Clarify -shared effect on crtfastmath.o X-Git-Tag: basepoints/gcc-14~1754 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b799acef461bcb78d77819dd27c8e4806177d841;p=thirdparty%2Fgcc.git Clarify -shared effect on crtfastmath.o This rewords the note to not specifically mention crtfastmath.o but FP environment altering by -ffast-math or -Ofast. PR target/55522 * doc/invoke.texi (-shared): Clarify effect on -ffast-math and -Ofast FP environment side-effects. --- diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 06d77983e30f..a371cd91ef86 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -17696,8 +17696,9 @@ needs to build supplementary stub code for constructors to work. On multi-libbed systems, @samp{gcc -shared} must select the correct support libraries to link against. Failing to supply the correct flags may lead to subtle defects. Supplying them in cases where they are not necessary -is innocuous. For x86, crtfastmath.o will not be added when -@option{-shared} is specified. } +is innocuous. @option{-shared} suppresses the addition of startup code +to alter the floating-point environment as done with @option{-ffast-math}, +@option{-Ofast} or @option{-funsafe-math-optimizations} on some targets.} @item -shared-libgcc @itemx -static-libgcc