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nixpkgs/pkgs/development/compilers/gcc/builder.sh
2016-06-23 12:16:40 +02:00

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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