You receive this bug because this package does not respect my system's CC ( x86_64-pc-linux-gnu-gcc - /usr/bin/x86_64-pc-linux-gnu-gcc ) and calls directly gcc -/usr/bin/gcc The possible solutions to fix this issue are: 1)Fix the buildsystem, if you can 2)inherit toolchain-funcs and use tc-export CC 3)inherit toolchain-funcs and use emake CC="$(tc-getCC)" gcc -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu -o ../../../bin/qtcreator_process_stub .obj/release-shared/process_stub_unix.o -L/var/tmp/portage/dev-qt/qt-creator-2.6.2/work/qt-creator-2.6.2-src/lib64/qtcreator
Fixed in eqmake4. http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/eclass/qt4-r2.eclass?r1=1.24&r2=1.25