source $stdenv/setup export NIX_FIXINC_DUMMY=$NIX_BUILD_TOP/dummy mkdir $NIX_FIXINC_DUMMY if test "$staticCompiler" = "1"; then EXTRA_LDFLAGS="-static" else EXTRA_LDFLAGS="-Wl,-rpath,$lib/lib" fi # GCC interprets empty paths as ".", which we don't want. if test -z "$CPATH"; then unset CPATH; fi if test -z "$LIBRARY_PATH"; then unset LIBRARY_PATH; fi echo "\$CPATH is \`$CPATH'" echo "\$LIBRARY_PATH is \`$LIBRARY_PATH'" if test "$noSysDirs" = "1"; then if test -e $NIX_CC/nix-support/orig-libc; then # Figure out what extra flags to pass to the gcc compilers # being generated to make sure that they use our glibc. extraFlags="$(cat $NIX_CC/nix-support/libc-cflags)" extraLDFlags="$(cat $NIX_CC/nix-support/libc-ldflags) $(cat $NIX_CC/nix-support/libc-ldflags-before || true)" # Use *real* header files, otherwise a limits.h is generated # that does not include Glibc's limits.h (notably missing # SSIZE_MAX, which breaks the build). export NIX_FIXINC_DUMMY=$libc_dev/include # The path to the Glibc binaries such as `crti.o'. glibc_libdir="$(cat $NIX_CC/nix-support/orig-libc)/lib" else # Hack: support impure environments. extraFlags="-isystem /usr/include" extraLDFlags="-L/usr/lib64 -L/usr/lib" glibc_libdir="/usr/lib" export NIX_FIXINC_DUMMY=/usr/include fi extraFlags="-I$NIX_FIXINC_DUMMY $extraFlags" extraLDFlags="-L$glibc_libdir -rpath $glibc_libdir $extraLDFlags" # BOOT_CFLAGS defaults to `-g -O2'; since we override it below, # make sure to explictly add them so that files compiled with the # bootstrap compiler are optimized and (optionally) contain # debugging information (info "(gccinstall) Building"). if test -n "$dontStrip"; then extraFlags="-O2 -g $extraFlags" else # Don't pass `-g' at all; this saves space while building. extraFlags="-O2 $extraFlags" fi EXTRA_FLAGS="$extraFlags" for i in $extraLDFlags; do EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,$i" done if test -n "$targetConfig"; then # Cross-compiling, we need gcc not to read ./specs in order to build # the g++ compiler (after the specs for the cross-gcc are created). # Having LIBRARY_PATH= makes gcc read the specs from ., and the build # breaks. Having this variable comes from the default.nix code to bring # gcj in. unset LIBRARY_PATH unset CPATH else if test -z "$NIX_CC_CROSS"; then EXTRA_TARGET_CFLAGS="$EXTRA_FLAGS" EXTRA_TARGET_CXXFLAGS="$EXTRA_FLAGS" EXTRA_TARGET_LDFLAGS="$EXTRA_LDFLAGS" else # This the case of cross-building the gcc. # We need special flags for the target, different than those of the build # Assertion: test -e $NIX_CC_CROSS/nix-support/orig-libc # Figure out what extra flags to pass to the gcc compilers # being generated to make sure that they use our glibc. extraFlags="$(cat $NIX_CC_CROSS/nix-support/libc-cflags)" extraLDFlags="$(cat $NIX_CC_CROSS/nix-support/libc-ldflags) $(cat $NIX_CC_CROSS/nix-support/libc-ldflags-before)" # The path to the Glibc binaries such as `crti.o'. glibc_dir="$(cat $NIX_CC_CROSS/nix-support/orig-libc)" glibc_libdir="$glibc_dir/lib" glibc_devdir="$(cat $NIX_CC_CROSS/nix-support/orig-libc-dev)" configureFlags="$configureFlags --with-native-system-header-dir=$glibc_devdir/include" # Use *real* header files, otherwise a limits.h is generated # that does not include Glibc's limits.h (notably missing # SSIZE_MAX, which breaks the build). NIX_FIXINC_DUMMY_CROSS="$glibc_devdir/include" extraFlags="-I$NIX_FIXINC_DUMMY_CROSS $extraFlags" extraLDFlags="-L$glibc_libdir -rpath $glibc_libdir $extraLDFlags" EXTRA_TARGET_CFLAGS="$extraFlags" for i in $extraLDFlags; do EXTRA_TARGET_LDFLAGS="$EXTRA_TARGET_LDFLAGS -Wl,$i" done fi fi # CFLAGS_FOR_TARGET are needed for the libstdc++ configure script to find # the startfiles. # FLAGS_FOR_TARGET are needed for the target libraries to receive the -Bxxx # for the startfiles. makeFlagsArray+=( \ NATIVE_SYSTEM_HEADER_DIR="$NIX_FIXINC_DUMMY" \ SYSTEM_HEADER_DIR="$NIX_FIXINC_DUMMY" \ CFLAGS_FOR_BUILD="$EXTRA_FLAGS $EXTRA_LDFLAGS" \ CXXFLAGS_FOR_BUILD="$EXTRA_FLAGS $EXTRA_LDFLAGS" \ CFLAGS_FOR_TARGET="$EXTRA_TARGET_CFLAGS $EXTRA_TARGET_LDFLAGS" \ CXXFLAGS_FOR_TARGET="$EXTRA_TARGET_CFLAGS $EXTRA_TARGET_LDFLAGS" \ FLAGS_FOR_TARGET="$EXTRA_TARGET_CFLAGS $EXTRA_TARGET_LDFLAGS" \ LDFLAGS_FOR_BUILD="$EXTRA_FLAGS $EXTRA_LDFLAGS" \ LDFLAGS_FOR_TARGET="$EXTRA_TARGET_LDFLAGS $EXTRA_TARGET_LDFLAGS" \ ) if test -z "$targetConfig"; then makeFlagsArray+=( \ BOOT_CFLAGS="$EXTRA_FLAGS $EXTRA_LDFLAGS" \ BOOT_LDFLAGS="$EXTRA_TARGET_CFLAGS $EXTRA_TARGET_LDFLAGS" \ ) fi if test -n "$targetConfig" -a "$crossStageStatic" == 1; then # We don't want the gcc build to assume there will be a libc providing # limits.h in this stagae makeFlagsArray+=( \ LIMITS_H_TEST=false \ ) else makeFlagsArray+=( \ LIMITS_H_TEST=true \ ) fi fi if test -n "$targetConfig"; then # The host strip will destroy some important details of the objects dontStrip=1 fi providedPreConfigure="$preConfigure"; preConfigure() { if test -n "$newlibSrc"; then tar xvf "$newlibSrc" -C .. ln -s ../newlib-*/newlib newlib # Patch to get armvt5el working: sed -i -e 's/ arm)/ arm*)/' newlib/configure.host fi # Bug - they packaged zlib if test -d "zlib"; then # This breaks the build without-headers, which should build only # the target libgcc as target libraries. # See 'configure:5370' rm -Rf zlib fi if test -f "$NIX_CC/nix-support/orig-libc"; then # Patch the configure script so it finds glibc headers. It's # important for example in order not to get libssp built, # because its functionality is in glibc already. sed -i \ -e "s,glibc_header_dir=/usr/include,glibc_header_dir=$libc_dev/include", \ gcc/configure fi if test -n "$crossMingw" -a -n "$crossStageStatic"; then mkdir -p ../mingw # --with-build-sysroot expects that: cp -R $libcCross/include ../mingw configureFlags="$configureFlags --with-build-sysroot=`pwd`/.." fi # Eval the preConfigure script from nix expression. eval "$providedPreConfigure" # Perform the build in a different directory. mkdir ../build cd ../build configureScript=../$sourceRoot/configure } postConfigure() { # Don't store the configure flags in the resulting executables. sed -e '/TOPLEVEL_CONFIGURE_ARGUMENTS=/d' -i Makefile } preInstall() { # Make ‘lib64’ symlinks to ‘lib’. if [ -n "$is64bit" -a -z "$enableMultilib" ]; then mkdir -p "$out/lib" ln -s lib "$out/lib64" mkdir -p "$lib/lib" ln -s lib "$lib/lib64" fi } postInstall() { # Move runtime libraries to $lib. moveToOutput "lib/lib*.so*" "$lib" moveToOutput "lib/lib*.la" "$lib" moveToOutput "share/gcc-*/python" "$lib" for i in "$lib"/lib/*.{la,py}; do substituteInPlace "$i" --replace "$out" "$lib" done # Remove `fixincl' to prevent a retained dependency on the # previous gcc. rm -rf $out/libexec/gcc/*/*/install-tools rm -rf $out/lib/gcc/*/*/install-tools # More dependencies with the previous gcc or some libs (gccbug stores the build command line) rm -rf $out/bin/gccbug if type "patchelf"; then # Take out the bootstrap-tools from the rpath, as it's not needed at all having $out for i in $(find "$out"/libexec/gcc/*/*/* -type f -a \! -name '*.la'); do PREV_RPATH=`patchelf --print-rpath "$i"` NEW_RPATH=`echo "$PREV_RPATH" | sed 's,:[^:]*bootstrap-tools/lib,,g'` patchelf --set-rpath "$NEW_RPATH" "$i" && echo OK done # For some reason the libs retain RPATH to $out for i in "$lib"/lib/{libtsan,libasan,libubsan}.so.*.*.*; do PREV_RPATH=`patchelf --print-rpath "$i"` NEW_RPATH=`echo "$PREV_RPATH" | sed "s,:${out}[^:]*,,g"` patchelf --set-rpath "$NEW_RPATH" "$i" && echo OK done fi # Get rid of some "fixed" header files rm -rfv $out/lib/gcc/*/*/include-fixed/{root,linux} # Replace hard links for i686-pc-linux-gnu-gcc etc. with symlinks. for i in $out/bin/*-gcc*; do if cmp -s $out/bin/gcc $i; then ln -sfn gcc $i fi done for i in $out/bin/c++ $out/bin/*-c++* $out/bin/*-g++*; do if cmp -s $out/bin/g++ $i; then ln -sfn g++ $i fi done # Disable RANDMMAP on grsec, which causes segfaults when using # precompiled headers. # See https://bugs.gentoo.org/show_bug.cgi?id=301299#c31 paxmark r $out/libexec/gcc/*/*/{cc1,cc1plus} eval "$postInstallGhdl" # Two identical man pages are shipped (moving and compressing is done later) ln -sf gcc.1 "$out"/share/man/man1/g++.1 } genericBuild