When trying to emerge rss-glx, my CFLAGS were ignored, making gcc complain.
Reproducible: Always
Steps to Reproduce:
1. emerge rss-glx
Actual Results:
# USE=-kde emerge rss-glx
<snip>
./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man
--infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
--localstatedir=/var/lib --enable-sse --disable-3dnow --enable-sound
--bindir=/usr/lib/xscreensaver
--with-configdir=/usr/share/control-center/screensavers/ CFLAGS=-march=pentium-m
-O3 -pipe -fomit-frame-pointer -fno-pie
<snip>
if i686-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../../include
-I../../src -g -Wall -MT rsMath.o -MD -MP -MF ".deps/rsMath.Tpo" \
-c -o rsMath.o `test -f 'rsMath.c' || echo './'`rsMath.c; \
then mv -f ".deps/rsMath.Tpo" ".deps/rsMath.Po"; \
else rm -f ".deps/rsMath.Tpo"; exit 1; \
fi
rsMath.c: In function `rsCPUDetect':
rsMath.c:39: error: PIC register `%ebx' clobbered in `asm'
make[3]: *** [rsMath.o] Error 1
Expected Results:
rss-glx should have been built. (The error goes away if -fomit-frame-pointer is
passed to gcc, which it wasn't although it was in the CFLAGS passed to configure.)
I think the error is in configure.in, see also the attached patch which fixes it
for me. `emerge info` also attached.
