314976 - HOST_OPTIMIZE_FLAGS kills the debug flags

Status: RESOLVED INVALID

(Firefox Build System :: General, defect)

Description

[Martin Mokrejs]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20051103 SeaMonkey/1.1a
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20051103 SeaMonkey/1.1a

I configured mozilla-source-2005110105-trunk with

./configure --disable-optimize --enable-debug='-g3 -O0 -ggdb' --enable-debug-modules=all --enable-debugger-info-modules --enable-detect-webshell-leaks --enable-svg --enable-svg-renderer-libart --enable-image-decoders=all --with-qtdir=/usr/qt/3 --enable-application=suite --disable-freetype2 --enable-jprof --enable-default-toolkit=gtk2 --enable-xft --disable-gssapi

but the build is without debug symbols. The MOZ_DEBUG_FLAGS is set correctly but the HOST_OPTIMIZE_FLAGS interferes with them and overrides with -O3 on my linux box. I propose the HOST_OPTIMIZE_FLAGS be unset when MOZ_DEBUG_FLAGS are non-empty. I think someone had objections against this and that should be in those older bugreports.

Please look at old patches in bugs #268292, #232748, #284767. The patches I've submitted some time ago were not that good, but this part of the former bugreport is still unsolved.

Reproducible: Always

Comment 1

[cls]

As I explained in bug 284767 comment 5, HOST_OPTIMIZE_FLAGS is only used for a handful of targets that are only used during the build process.  Also, I believe the variable is only used when cross-compiling (see config/config.mk) and can be easily overridden by setting HOST_OPTIMIZE_FLAGS in your mozconfig file.  

My non-cross-compiled debug build log doesn't show anything being built with the default HOST_OPTIMIZE_FLAGS.  Can you point out which part of your build is using HOST_OPTIMIZE_FLAGS or why you think you're missing debug symbols?

Comment 2

[Martin Mokrejs]

Attachment: config.status

Comment 3

[Martin Mokrejs]

The symbols in gdb are unavailable, mostly. I have seamonkey crashing on some attachment, but the stacktrace is not much useful.

I can however confirm there is no -O3/-O2 optimization in the nohup.out file gathered while compiling sources. I cannot find even a 'strip' substring ...
Any clues where are the symbiols then? I compile with -O0 and -ggdb.

Comment 4

[cls]

Ok, whatever the problem is that you're seeing, it's not due to HOST_OPTIMIZE_FLAGS.  If you are packaging up the build, be aware that the installer Makefiles strip the binaries before creating the tarballs.  Othewrise, the binaries under dist/ should have the full debugging info available.