> # Set optimization level
> if [[ ${ARCH} == hppa ]]; then
> mozconfig_annotate "more than -O0 causes a segfault on
> hppa" --enable-optimize=-O0
> elif [[ ${ARCH} == x86 ]]; then
> mozconfig_annotate "less then -O2 causes a segfault on
> x86" --enable-optimize=-O2
> elif use custom-optimization || [[ ${ARCH} =~ (alpha|ia64) ]]; then
> # Set optimization level based on CFLAGS
> if is-flag -O0; then
> mozconfig_annotate "from CFLAGS"
> --enable-optimize=-O0
> elif [[ ${ARCH} == ppc ]] && has_version
> '>=sys-libs/glibc-2.8'; then
> mozconfig_annotate "more than -O1 segfaults on
> ppc with glibc-2.8" --enable-optimize=-O1
> elif is-flag -O3; then
> mozconfig_annotate "from CFLAGS"
> --enable-optimize=-O3
> elif is-flag -O1; then
> mozconfig_annotate "from CFLAGS"
> --enable-optimize=-O1
> elif is-flag -Os; then
> mozconfig_annotate "from CFLAGS"
> --enable-optimize=-Os
> else
> mozconfig_annotate "Gentoo's default
> optimization" --enable-optimize=-O2
> fi
> else
> # Enable Mozilla's default
> mozconfig_annotate "mozilla default" --enable-optimize
> fi
> """
>
And just after that, it appears that if custom-cflags is not set, then it
strips all the -O* flags (if i'm reading the code correctly), which would
explain why there's no -O set for the compiler.....
# Strip optimization so it does not end up in compile string
filter-flags '-O*'
# Strip over-aggressive CFLAGS
use custom-cflags || strip-flags
