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| author | Andreas Jaeger <aj@suse.de> | 2012-05-06 09:14:15 +0200 |
|---|---|---|
| committer | Andreas Jaeger <aj@suse.de> | 2012-05-06 09:14:15 +0200 |
| commit | bd7b0e561f7f684cedfc4adb964569fe9ab16209 (patch) | |
| tree | 128dad5210e127188d712f7b718dc59ec730e7df | |
| parent | 5779f134a0f2d52effc24afc1fdb201055bbb3fe (diff) | |
| download | glibc-bd7b0e561f7f684cedfc4adb964569fe9ab16209.tar.gz glibc-bd7b0e561f7f684cedfc4adb964569fe9ab16209.tar.xz glibc-bd7b0e561f7f684cedfc4adb964569fe9ab16209.zip | |
Build glibc with -frounding-math
* Makeconfig (+math-flags): New, set to -frounding-math. (+cflags): Add +math-flags so that all of glibc gets compiled with it.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | Makeconfig | 7 |
2 files changed, 12 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog index e121392163..866f9bd6c1 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2012-05-06 Andreas Jaeger <aj@suse.de> + + * Makeconfig (+math-flags): New, set to -frounding-math. + (+cflags): Add +math-flags so that all of glibc gets compiled with + it. + 2012-05-05 Joseph Myers <joseph@codesourcery.com> * math/libm-test.inc (hypot_test) [TEST_DOUBLE && TEST_INLINE]: diff --git a/Makeconfig b/Makeconfig index 5c78ee497b..f68a752766 100644 --- a/Makeconfig +++ b/Makeconfig @@ -574,6 +574,11 @@ endif # actually different, so allow the compiler to merge them all. +merge-constants = -fmerge-all-constants +# We have to assume that glibc functions are called in any rounding +# mode and also change the rounding mode in a few functions. So, +# disable any optimization that assume default rounding mode. ++math-flags = -frounding-math + # This is the program that generates makefile dependencies from C source files. # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy # targets for headers so that removed headers don't break the build. @@ -633,7 +638,7 @@ ifeq "$(strip $(+cflags))" "" +cflags := $(default_cflags) endif # $(+cflags) == "" -+cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) ++cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) +gcc-nowarn := -w # Don't duplicate options if we inherited variables from the parent. |