> On Aug 11, 2016, at 5:40 AM, Jérémy Rosen <[email protected]> wrote: > > Hello everybody > > I am working on a jethro-based project on my Debian/testing machine, and > debian just migrated it's default gcc from gcc-5 to gcc-6 > > As expected, this caused all sort of errors in my build, starting by > pkgconfig-native not being compilable anymore (new gcc warnings coupled with > -Werror) > > > That's OK. I don't expect jethro to support future compilers out of the box > so I installed gcc-5 in parallel to gcc-6 while keeping gcc-6 as the default > compiler. > > I then set the following variables in local.conf > > #gcc-5 > export BUILD_CC = "${CCACHE}${BUILD_PREFIX}gcc-5 ${BUILD_CC_ARCH}" > export BUILD_CXX = "${CCACHE}${BUILD_PREFIX}g++-5 ${BUILD_CC_ARCH}" > export BUILD_FC = "${CCACHE}${BUILD_PREFIX}gfortran-5 ${BUILD_CC_ARCH}" > export BUILD_CPP = "${BUILD_PREFIX}gcc-5 ${BUILD_CC_ARCH} -E" > export BUILD_LD = "${BUILD_PREFIX}ld ${BUILD_LD_ARCH}" > export BUILD_CCLD = "${BUILD_PREFIX}gcc-5 ${BUILD_CC_ARCH}" > export BUILD_AR = "${BUILD_PREFIX}gcc-ar-5" > export BUILD_AS = "${BUILD_PREFIX}as ${BUILD_AS_ARCH}" > export BUILD_RANLIB = "${BUILD_PREFIX}gcc-ranlib-5" > export BUILD_STRIP = "${BUILD_PREFIX}strip" > export BUILD_NM = "${BUILD_PREFIX}gcc-nm-5" > > This helped, and allowed me to go much further in my build, but the recipe > gcc-cross-arm still failed. To be able to compile my build I had to add the > following to my local.conf > > CC_pn-gcc-cross-arm= "${BUILD_CC}" > CXX_pn-gcc-cross-arm= "${BUILD_CXX}" > CC_pn-gcc-crosssdk-x86_64= "${BUILD_CC}" > CXX_pn-gcc-crosssdk-x86_64= "${BUILD_CXX}" > > > So apparently, gcc still has some reference to $CC and $CXX hardcoded > somewhere (I think it's in do_configure) > > It seems to set $CC in the do_compile correctly, but not in do_configure. And > it never sets $CXX > > I tried to understand what the GCC recipe was doing wrong, but I couldn't > find out on first look and it's a really complicated recipe > > > I hope this is enough clues to allow someone more knowledgeable to create a > proper fix…
Just change the default gcc to gcc5 on your host. The host packages do not isolate compiler as well as target packages.
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