Bug 160595

Summary:	-Dname causes `USE="gcj" emerge gcc` failure
Product:	Gentoo Linux	Reporter:	Arfrever Frehtes Taifersar Arahesis (RETIRED) <arfrever>
Component:	New packages	Assignee:	Gentoo Toolchain Maintainers <toolchain>
Status:	RESOLVED WONTFIX
Severity:	enhancement
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	emerge log

Description Arfrever Frehtes Taifersar Arahesis (RETIRED) gentoo-dev

2007-01-06 23:52:40 UTC

If user has any -D flags (e.g. -DG_DISABLE_ASSERT -DNDEBUG) in CFLAGS, emerging gcc with gcj USE flag will fail. I guess that this bug was created by resolving bug #159402.

$ emerge -ptv gcc

These are the packages that would be merged, in reverse order:

Calculating dependencies... done!
[ebuild   R   ] sys-devel/gcc-4.1.1-r3  USE="fortran gcj gtk mudflap nls (-altivec) -bootstrap -build -doc (-hardened) -ip28 -ip32r10k (-multilib) -multislot (-n32) (-n64) -nocxx -objc -objc++ -objc-gc -test -vanilla" 0 kB

Total: 1 package (1 reinstall), Size of downloads: 0 kB
$

I suggest filtering -D flags in some parts of building gcc.

Comment 1 Arfrever Frehtes Taifersar Arahesis (RETIRED) gentoo-dev

2007-01-06 23:53:31 UTC

Created attachment 105735 [details]
emerge log

Comment 2 Jakub Moc (RETIRED) gentoo-dev

2007-01-06 23:57:55 UTC

So don't use -Dblah if you don't know what you are doing, sticking it into make.conf is completely unsupported... :P

Comment 3 SpanKY gentoo-dev

2007-01-07 01:26:36 UTC

-D is a CPPFLAG, not a CFLAG