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|
kind: manual
description:
Simple native compiler which is used to build all of stage 3.
sources:
- kind: git
url: upstream:gcc-tarball
track: baserock/gcc-7.1.0
ref: 3b0dbcfa2e5d12bd80cab1b35f08653d61fe7838
depends:
- filename: gnu-toolchain/stage1.bst
type: build
- gnu-toolchain/stage2-linux-api-headers.bst
- gnu-toolchain/stage2-glibc.bst
- gnu-toolchain/stage2-gcc-fixed-headers.bst
- gnu-toolchain/stage2-libstdcxx.bst
variables:
prefix: /tools
gcc-arch-flags: ''
gcc-libdir: lib
(?):
# ARM platforms vary a lot even within a single architecture revision,
# and require tweaks such as this to produce a useful compiler.
# This is a default configuration that has worked for some targets.
- arch in ["armv7b", "armv7l"]:
gcc-arch-flags: --with-arch=armv7-a
- arch in ["armv7blhf", "armv7lhf"]:
gcc-arch-flags: >
--with-arch=armv7-a
--with-cpu=cortex-a9
--with-tune=cortex-a9
--with-fpu=vfpv3-d16
--with-float=hard
# GCC is hardwired to support 32-bit and 64-bit in parallel on these
# platforms, so 64-bit libraries end up in `lib64` rather than `lib`.
- arch in ["armv8b64", "armv8l64", "x86_64"]:
gcc-libdir: lib64
environment:
PATH: /tools/bin:/usr/bin:/bin:/usr/sbin:/sbin
config:
configure-commands:
- mkdir o
# In other projects we specify the sysroot location using CPPFLAGS.
# Here, that breaks because GCC compiles stuff for the *build* machine,
# too ... and this requires using the host's compiler, which cannot use
# the same set of CPPFLAGS as the target. If we specify the sysroot
# using CC instead then we don't interfere, because we are only
# specifying the *host* C compiler.
#
# Configure flag notes:
# 1. It's vital that this compiler runs in the bootstrap machine, and
# targets the same machine (TARGET_STAGE1) so that the stage 1 GCC
# is used instead of the compiler of the build machine.
# 2. See gcc.morph.
# 3. Disable searching /usr/local/include for headers
# 4. This flag causes the correct --sysroot flag to be passed when
# calling stage 1 GCC.
- |
export STAGE2_SYSROOT="/"
export CC="%{target-stage1}-gcc --sysroot=$STAGE2_SYSROOT"
export CXX="%{target-stage1}-g++ --sysroot=$STAGE2_SYSROOT"
export AR="%{target-stage1}-ar"
export RANLIB="%{target-stage1}-ranlib"
cd o && ../configure %{gcc-arch-flags} \
--build=$(sh ../config.guess) \
`# [1]` --host=%{target-stage1} \
`# [1]` --target=%{target-stage1} \
--prefix="%{prefix}" \
`# [2]` --libdir=%{prefix}/lib \
`# [3]` --with-local-prefix=%{prefix} \
`# [4]` --with-build-sysroot="$STAGE2_SYSROOT" \
--disable-bootstrap \
--disable-nls \
--disable-multilib \
--disable-libgomp \
--disable-libstdcxx-pch \
--enable-languages=c,c++
build-commands:
- |
export STAGE2_SYSROOT="/"
cd o && make
install-commands:
- cd o && make DESTDIR="%{install-root}" install
# Stage 3 builds need to link against this file in the location that
# it will be in the final system, so we make a temporary link now.
- |
install -d "%{install-root}/usr/lib"
ln -s "%{prefix}/%{gcc-libdir}/libgcc_s.so" "%{install-root}/usr/lib/"
ln -s "%{prefix}/%{gcc-libdir}/libgcc_s.so.1" "%{install-root}/usr/lib/"
strip-commands:
- |
%{stage2-strip-binaries}
(?):
# GCC is not passing the correct host/target flags to GMP's configure
# script, which causes it to not use the machine-dependent code for
# the platform and use the generic one instead. However, the generic
# code results on an undefined reference to `__gmpn_invert_limb' in
# ARMv7. Fix the invocation of GMP's configure script so that GMP can
# use the machine-dependent code.
- arch.startswith("armv5"):
build-commands:
(<):
- sed -i "s/--host=none/--host=armv5/" o/Makefile
- sed -i "s/--target=none/--target=armv5/" o/Makefile
- arch.startswith("armv7"):
build-commands:
(<):
- sed -i "s/--host=none/--host=armv7a/" o/Makefile
- sed -i "s/--target=none/--target=armv7a/" o/Makefile
|