Bug 9337 – gdb failes with invalid option '-O2-pipe'

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Thomas T. Veldhouse 2002-10-19 09:49:28 UTC]

While building gnome it depends upon gdb.  gdb fails during the compilation of
its first source file with an error

cc1: invalid option '-O2-pipe'
*** The command 'gcc -o conftest -O2-pipe -march=athlon  conftest.c' failed.
*** You must set the environment variable CC to a working compiler.

...

This keeps gnome and probably kde from building.

[Comment 1 Thomas T. Veldhouse 2002-10-19 09:52:14 UTC]

This is for the gdb-5.2.1.ebuild.

[Comment 2 Thomas T. Veldhouse 2002-10-19 09:58:36 UTC]

Further research finds that this is caused because of two factors.  My CFLAGS
are set to "-O -pipe -march=athlon".  Nothing wrong there.  What is wrong is in
the ebuild, there is a replace-flags directive.

replace-flags -O? -O2

This seems to strip out a space from the CFLAGS environment.  Why does this need
to be there?

[Comment 3 SpanKY 2002-10-19 12:17:33 UTC]

its odd that it would strip the space ... 
 
the replace-flags is there because the package breaks with -O3 and greater 

[Comment 4 Seemant Kulleen (RETIRED) 2002-10-20 01:43:28 UTC]

the flag-o-matic eclass should have the requisite fix. please try again.

[Comment 5 Martin Schlemmer (RETIRED) 2002-10-20 01:45:51 UTC]

try something like:

--------snip---------------
replace-flags -O[!' '] -O2
---------------------------