28b6fb61e6
This is done for the sake of Yosemite, which does not have gcc, and yet this change is also compatible with Linux.
200 lines
6.6 KiB
Bash
200 lines
6.6 KiB
Bash
source $stdenv/setup
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export NIX_FIXINC_DUMMY=$NIX_BUILD_TOP/dummy
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mkdir $NIX_FIXINC_DUMMY
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# libstdc++ needs this; otherwise it will use /lib/cpp, which is a Bad
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# Thing.
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export CPP="gcc -E"
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if test "$staticCompiler" = "1"; then
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EXTRA_LDFLAGS="-static"
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else
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EXTRA_LDFLAGS=""
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fi
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if test "$noSysDirs" = "1"; then
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if test -e $NIX_CC/nix-support/orig-libc; then
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# Figure out what extra flags to pass to the gcc compilers
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# being generated to make sure that they use our glibc.
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extraFlags="$(cat $NIX_CC/nix-support/libc-cflags)"
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extraLDFlags="$(cat $NIX_CC/nix-support/libc-ldflags) $(cat $NIX_CC/nix-support/libc-ldflags-before)"
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# Use *real* header files, otherwise a limits.h is generated
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# that does not include Glibc's limits.h (notably missing
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# SSIZE_MAX, which breaks the build).
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export NIX_FIXINC_DUMMY=$(cat $NIX_CC/nix-support/orig-libc)/include
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# The path to the Glibc binaries such as `crti.o'.
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glibc_libdir="$(cat $NIX_CC/nix-support/orig-libc)/lib"
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else
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# Hack: support impure environments.
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extraFlags="-isystem /usr/include"
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extraLDFlags="-L/usr/lib64 -L/usr/lib"
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glibc_libdir="/usr/lib"
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export NIX_FIXINC_DUMMY=/usr/include
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fi
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extraFlags="-g0 -O2 -I$NIX_FIXINC_DUMMY $extraFlags"
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extraLDFlags="--strip-debug -L$glibc_libdir -rpath $glibc_libdir $extraLDFlags"
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EXTRA_FLAGS="$extraFlags"
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for i in $extraLDFlags; do
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,$i"
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done
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if test -n "$targetConfig"; then
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# Cross-compiling, we need gcc not to read ./specs in order to build
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# the g++ compiler (after the specs for the cross-gcc are created).
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# Having LIBRARY_PATH= makes gcc read the specs from ., and the build
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# breaks. Having this variable comes from the default.nix code to bring
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# gcj in.
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unset LIBRARY_PATH
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unset CPATH
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if test -z "$crossStageStatic"; then
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EXTRA_FLAGS_TARGET="-g0 -O2 -B${libcCross}/lib -idirafter ${libcCross}/include"
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EXTRA_LDFLAGS_TARGET="-Wl,-L${libcCross}/lib"
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fi
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else
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if test -z "$NIX_CC_CROSS"; then
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EXTRA_FLAGS_TARGET="$EXTRA_FLAGS"
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EXTRA_LDFLAGS_TARGET="$EXTRA_LDFLAGS"
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else
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# This the case of cross-building the gcc.
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# We need special flags for the target, different than those of the build
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# Assertion:
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test -e $NIX_CC_CROSS/nix-support/orig-libc
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# Figure out what extra flags to pass to the gcc compilers
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# being generated to make sure that they use our glibc.
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extraFlags="$(cat $NIX_CC_CROSS/nix-support/libc-cflags)"
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extraLDFlags="$(cat $NIX_CC_CROSS/nix-support/libc-ldflags) $(cat $NIX_CC_CROSS/nix-support/libc-ldflags-before)"
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# Use *real* header files, otherwise a limits.h is generated
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# that does not include Glibc's limits.h (notably missing
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# SSIZE_MAX, which breaks the build).
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NIX_FIXINC_DUMMY_CROSS=$(cat $NIX_CC_CROSS/nix-support/orig-libc)/include
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# The path to the Glibc binaries such as `crti.o'.
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glibc_libdir="$(cat $NIX_CC_CROSS/nix-support/orig-libc)/lib"
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extraFlags="-g0 -O2 -I$NIX_FIXINC_DUMMY_CROSS $extraFlags"
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extraLDFlags="--strip-debug -L$glibc_libdir -rpath $glibc_libdir $extraLDFlags"
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EXTRA_FLAGS_TARGET="$extraFlags"
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for i in $extraLDFlags; do
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EXTRA_LDFLAGS_TARGET="$EXTRA_LDFLAGS_TARGET -Wl,$i"
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done
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fi
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fi
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# CFLAGS_FOR_TARGET are needed for the libstdc++ configure script to find
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# the startfiles.
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# FLAGS_FOR_TARGET are needed for the target libraries to receive the -Bxxx
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# for the startfiles.
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makeFlagsArray=( \
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"${makeFlagsArray[@]}" \
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NATIVE_SYSTEM_HEADER_DIR="$NIX_FIXINC_DUMMY" \
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SYSTEM_HEADER_DIR="$NIX_FIXINC_DUMMY" \
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CFLAGS_FOR_BUILD="$EXTRA_FLAGS $EXTRA_LDFLAGS" \
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CFLAGS_FOR_TARGET="$EXTRA_FLAGS_TARGET $EXTRA_LDFLAGS_TARGET" \
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FLAGS_FOR_TARGET="$EXTRA_FLAGS_TARGET $EXTRA_LDFLAGS_TARGET" \
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LDFLAGS_FOR_BUILD="$EXTRA_FLAGS $EXTRA_LDFLAGS" \
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LDFLAGS_FOR_TARGET="$EXTRA_FLAGS_TARGET $EXTRA_LDFLAGS_TARGET" \
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)
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if test -z "$targetConfig"; then
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makeFlagsArray=( \
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"${makeFlagsArray[@]}" \
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BOOT_CFLAGS="$EXTRA_FLAGS $EXTRA_LDFLAGS" \
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BOOT_LDFLAGS="$EXTRA_FLAGS_TARGET $EXTRA_LDFLAGS_TARGET" \
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)
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fi
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if test -n "$targetConfig" -a "$crossStageStatic" == 1; then
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# We don't want the gcc build to assume there will be a libc providing
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# limits.h in this stagae
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makeFlagsArray=( \
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"${makeFlagsArray[@]}" \
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LIMITS_H_TEST=false \
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)
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else
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makeFlagsArray=( \
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"${makeFlagsArray[@]}" \
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LIMITS_H_TEST=true \
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)
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fi
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fi
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if test -n "$targetConfig"; then
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# The host strip will destroy some important details of the objects
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dontStrip=1
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fi
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preConfigure() {
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if test -n "$newlibSrc"; then
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tar xvf "$newlibSrc" -C ..
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ln -s ../newlib-*/newlib newlib
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# Patch to get armvt5el working:
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sed -i -e 's/ arm)/ arm*)/' newlib/configure.host
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fi
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# Bug - they packaged zlib
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if test -d "zlib"; then
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# This breaks the build without-headers, which should build only
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# the target libgcc as target libraries.
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# See 'configure:5370'
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rm -Rf zlib
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fi
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# Perform the build in a different directory.
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mkdir ../build
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cd ../build
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configureScript=../$sourceRoot/configure
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}
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postInstall() {
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# Remove precompiled headers for now. They are very big and
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# probably not very useful yet.
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find $out/include -name "*.gch" -exec rm -rf {} \; -prune
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# Remove `fixincl' to prevent a retained dependency on the
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# previous gcc.
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rm -rf $out/libexec/gcc/*/*/install-tools
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rm -rf $out/lib/gcc/*/*/install-tools
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# Get rid of some "fixed" header files
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rm -rf $out/lib/gcc/*/*/include/root
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# Replace hard links for i686-pc-linux-gnu-gcc etc. with symlinks.
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for i in $out/bin/*-gcc*; do
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if cmp -s $out/bin/gcc $i; then
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ln -sfn gcc $i
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fi
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done
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for i in $out/bin/*-c++* $out/bin/*-g++*; do
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if cmp -s $out/bin/g++ $i; then
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ln -sfn g++ $i
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fi
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done
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eval "$postInstallGhdl"
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}
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if test -z "$targetConfig" && test -z "$crossConfig"; then
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if test -z "$profiledCompiler"; then
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buildFlags="bootstrap $buildFlags"
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else
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buildFlags="profiledbootstrap $buildFlags"
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fi
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fi
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genericBuild
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