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llvm-6502/utils/buildit/build_llvm
Bob Wilson 1b8eeb327e Update Apple's build script for llvmCore. <rdar://problem/12914321> 
This change is basically just copying changes that we've used for Apple's
clang builds to the script used for building llvmCore. Besides cleaning it
up to use xcrun to locate the proper versions of tools, especially for cross
compiling, it fixes the build to work with newer versions of clang that
honor SDKROOT settings in the environment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172138 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10 22:59:51 +00:00

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#!/bin/sh
# LLVM LOCAL file B&I
set -x
# Build LLVM the "Apple way".
# Parameters:
# The first parameter is a space-separated list of the architectures the
# compilers will run on. For instance, "ppc i386". If the current machine
# isn't in the list, it will (effectively) be added.
HOSTS="$1"
# The second parameter is a space-separated list of the architectures the
# compilers will generate code for. If the current machine isn't in the list, a
# compiler for it will get built anyway, but won't be installed.
# FIXME: The list of targets is currently hard-coded and TARGETS is not used.
TARGETS="$2"
# The third parameter is the path to the compiler sources. There should be a
# shell script named 'configure' in this directory. This script makes a copy...
ORIG_SRC_DIR="$3"
# The fourth parameter is the location where the LLVM will be installed. You can
# move it once it's built, so this mostly controls the layout of $DEST_DIR.
DEST_ROOT="$4"
# The fifth parameter is the place where the compiler will be copied once it's
# built.
DEST_DIR="$5"
# The sixth parameter is a directory in which to place information (like
# unstripped executables and generated source files) helpful in debugging the
# resulting compiler.
SYM_DIR="$6"
# The seventh parameter is a yes/no that indicates whether assertions should be
# enabled in the LLVM libs/tools.
LLVM_ASSERTIONS="$7"
# The eighth parameter is a yes/no that indicates whether this is an optimized
# build.
LLVM_OPTIMIZED="$8"
# A yes/no parameter that controls whether to cross-build for an ARM host.
ARM_HOSTED_BUILD="$9"
# A yes/no parameter that controls whether to cross-build for the iOS simulator
IOS_SIM_BUILD="${10}"
# The version number of the submission, e.g. 1007.
LLVM_SUBMIT_VERSION="${11}"
# The subversion number of the submission, e.g. 03.
LLVM_SUBMIT_SUBVERSION="${12}"
# The current working directory is where the build will happen. It may already
# contain a partial result of an interrupted build, in which case this script
# will continue where it left off.
DIR=`pwd`
DARWIN_VERS=`uname -r | sed 's/\..*//'`
echo DARWIN_VERS = $DARWIN_VERS
################################################################################
# Run the build.
# Create the source tree we'll actually use to build, deleting
# tcl since it doesn't actually build properly in a cross environment
# and we don't really need it.
SRC_DIR=$DIR/src
rm -rf $SRC_DIR || exit 1
mkdir $SRC_DIR || exit 1
ln -s $ORIG_SRC_DIR/* $SRC_DIR/ || exit 1
# We can't use the top-level Makefile as-is. Remove the soft link:
rm $SRC_DIR/Makefile || exit 1
# Now create our own by editing the top-level Makefile, deleting every line marked "Apple-style":
sed -e '/[Aa]pple-style/d' -e '/include.*GNUmakefile/d' $ORIG_SRC_DIR/Makefile > $SRC_DIR/Makefile || exit 1
SUBVERSION=`echo $RC_ProjectSourceVersion | sed -e 's/.*\.\([0-9]*\).*/\1/'`
if [ "x$SUBVERSION" != "x$RC_ProjectSourceVersion" ]; then
LLVM_SUBMIT_SUBVERSION=`printf "%02d" $SUBVERSION`
RC_ProjectSourceVersion=`echo $RC_ProjectSourceVersion | sed -e 's/\..*//'`
LLVM_SUBMIT_VERSION=$RC_ProjectSourceVersion
fi
if [ "x$LLVM_SUBMIT_SUBVERSION" = "x00" -o "x$LLVM_SUBMIT_SUBVERSION" = "x0" ]; then
LLVM_VERSION="$LLVM_SUBMIT_VERSION"
else
LLVM_VERSION="$LLVM_SUBMIT_VERSION-$LLVM_SUBMIT_SUBVERSION"
fi
LLVM_VERSION_INFO="'\" Apple Build #$LLVM_VERSION\"'"
# Figure out how many make processes to run.
SYSCTL=`sysctl -n hw.activecpu`
# sysctl -n hw.* does not work when invoked via B&I chroot /BuildRoot.
# Builders can default to 2, since even if they are single processor,
# nothing else is running on the machine.
if [ -z "$SYSCTL" ]; then
SYSCTL=2
fi
JOBS_FLAG="-j $SYSCTL"
COMMON_CONFIGURE_OPTS="\
--prefix=$DEST_DIR$DEST_ROOT \
--enable-assertions=$LLVM_ASSERTIONS \
--enable-optimized=$LLVM_OPTIMIZED \
--disable-bindings"
COMMON_MAKEFLAGS=$JOBS_FLAG $OPTIMIZE_OPTS UNIVERSAL=1 UNIVERSAL_ARCH="$HOSTS" UNIVERSAL_SDK_PATH=$SDKROOT NO_RUNTIME_LIBS=1 DISABLE_EDIS=1 REQUIRES_RTTI=1 DEBUG_SYMBOLS=1 LLVM_SUBMIT_VERSION=$LLVM_SUBMIT_VERSION LLVM_SUBMIT_SUBVERSION=$LLVM_SUBMIT_SUBVERSION CXXFLAGS=-DLLVM_VERSION_INFO="$LLVM_VERSION_INFO" VERBOSE=1
# Build the LLVM tree universal.
mkdir -p $DIR/obj-llvm || exit 1
cd $DIR/obj-llvm || exit 1
if [ "$ARM_HOSTED_BUILD" = yes ]; then
# The cross-tools' build process expects to find an existing cross toolchain
# under names like 'arm-apple-darwin$DARWIN_VERS-as'; so make them.
rm -rf $DIR/bin || exit 1
mkdir $DIR/bin || exit 1
for prog in ar nm ranlib strip lipo ld as ; do
P=$DIR/bin/arm-apple-darwin$DARWIN_VERS-${prog}
T=`xcrun -sdk $SDKROOT -find ${prog}`
ln -s $T $DIR/bin/$prog
echo '#!/bin/sh' > $P || exit 1
echo 'exec '$T' "$@"' >> $P || exit 1
chmod a+x $P || exit 1
done
# Set up the links for clang.
for prog in clang clang++ ; do
P=$DIR/bin/arm-apple-darwin$DARWIN_VERS-${prog}
T=`xcrun -sdk $SDKROOT -find ${prog}`
ln -s $T $DIR/bin/$prog
echo '#!/bin/sh' > $P || exit 1
echo 'exec '$T' -arch armv7 -isysroot '${SDKROOT}' "$@"' >> $P || exit 1
chmod a+x $P || exit 1
done
PATH=$DIR/bin:$PATH
unset SDKROOT && \
$SRC_DIR/configure $COMMON_CONFIGURE_OPTS \
--enable-targets=arm \
--host=arm-apple-darwin10 \
--target=arm-apple-darwin10 \
--build=i686-apple-darwin10 \
--program-prefix="" \
|| exit 1
make $COMMON_MAKEFLAGS SDKROOT=
if [ $? != 0 ] ; then
echo "error: LLVM 'make' failed!"
exit 1
fi
else
# not $ARM_HOSTED_BUILD
if [ "$IOS_SIM_BUILD" = yes ]; then
# Use a non-standard "darwin_sim" host triple to trigger a cross-build.
configure_opts="--enable-targets=x86 --host=i686-apple-darwin_sim \
--build=i686-apple-darwin10"
else
configure_opts="--enable-targets=arm,x86"
fi
if [ $SDKROOT ]; then
CPPFLAGS="$CPPFLAGS -isysroot $SDKROOT"
fi
for host in $HOSTS; do :; done
CPPFLAGS="$CPPFLAGS -arch $host"
$SRC_DIR/configure $COMMON_CONFIGURE_OPTS $configure_opts \
--program-prefix="" \
CPPFLAGS="$CPPFLAGS" \
|| exit 1
make $COMMON_MAKEFLAGS
if [ $? != 0 ] ; then
echo "error: LLVM 'make' failed!"
exit 1
fi
fi
################################################################################
# Construct the actual destination root, by copying stuff from $DIR/dst-* to
# $DEST_DIR, with occasional 'lipo' commands.
cd $DEST_DIR || exit 1
# Clean out DEST_DIR in case -noclean was passed to buildit.
rm -rf * || exit 1
cd $DIR/obj-llvm || exit 1
# Install the tree into the destination directory.
make $COMMON_MAKEFLAGS install
if ! test $? == 0 ; then
echo "error: LLVM 'make install' failed!"
exit 1
fi
# Install Version.h
LLVM_MINOR_VERSION=`echo $LLVM_SUBMIT_SUBVERSION | sed -e 's,0*\([1-9][0-9]*\),\1,'`
if [ "x$LLVM_MINOR_VERSION" = "x" ]; then
LLVM_MINOR_VERSION=0
fi
RC_ProjectSourceSubversion=`printf "%d" $LLVM_MINOR_VERSION`
echo "#define LLVM_VERSION ${RC_ProjectSourceVersion}" > $DEST_DIR$DEST_ROOT/include/llvm/Version.h
echo "#define LLVM_MINOR_VERSION ${RC_ProjectSourceSubversion}" >> $DEST_DIR$DEST_ROOT/include/llvm/Version.h
# Find the right version of strip to use.
STRIP=strip
if [ -n "$SDKROOT" ]; then
STRIP=`xcrun -sdk $SDKROOT -find strip`
fi
if [ "x$LLVM_DEBUG" != "x1" ]; then
# Strip local symbols from llvm libraries.
#
# Use '-l' to strip i386 modules. N.B. that flag doesn't work with kext or
# PPC objects!
$STRIP -Sl $DEST_DIR$DEST_ROOT/lib/*.[oa]
for f in `ls $DEST_DIR$DEST_ROOT/lib/*.so`; do
$STRIP -Sxl $f
done
fi
# Remove .dir files
cd $DEST_DIR$DEST_ROOT
rm -f bin/.dir etc/llvm/.dir lib/.dir
# The Hello dylib is an example of how to build a pass.
# The BugpointPasses module is only used to test bugpoint.
# These unversioned dylibs cause verification failures, so do not install them.
# (The wildcards are used to match a "lib" prefix if it is present.)
rm $DEST_DIR$DEST_ROOT/lib/*LLVMHello.dylib
rm $DEST_DIR$DEST_ROOT/lib/*BugpointPasses.dylib
# Compress manpages
MDIR=$DEST_DIR$DEST_ROOT/share/man/man1
gzip -f $MDIR/*
################################################################################
# Create SYM_DIR with information required for debugging.
# Figure out how many make processes to run.
SYSCTL=`sysctl -n hw.activecpu`
# hw.activecpu only available in 10.2.6 and later
if [ -z "$SYSCTL" ]; then
SYSCTL=`sysctl -n hw.ncpu`
fi
# sysctl -n hw.* does not work when invoked via B&I chroot /BuildRoot. Builders
# can default to 2, since even if they are single processor, nothing else is
# running on the machine.
if [ -z "$SYSCTL" ]; then
SYSCTL=2
fi
cd $SYM_DIR || exit 1
# Clean out SYM_DIR in case -noclean was passed to buildit.
rm -rf * || exit 1
# Generate .dSYM files
DSYMUTIL=`xcrun -find dsymutil`
find $DEST_DIR -perm -0111 -type f \
! \( -name '*.la' -o -name gccas -o -name gccld -o -name llvm-config -o -name '*.a' \) \
-print | xargs -n 1 -P ${SYSCTL} ${DSYMUTIL}
# Save .dSYM files and .a archives
cd $DEST_DIR || exit 1
find . \( -path \*.dSYM/\* -or -name \*.a \) -print \
| cpio -pdml $SYM_DIR || exit 1
# Save source files.
mkdir $SYM_DIR/src || exit 1
cd $DIR || exit 1
find obj-* -name \*.\[chy\] -o -name \*.cpp -print \
| cpio -pdml $SYM_DIR/src || exit 1
################################################################################
# Remove libLTO.dylib and lto.h. Those are installed by clang.
cd $DEST_DIR$DEST_ROOT
rm -f lib/libLTO.dylib
rm -f lib/libLTO.a lib/libLTO.la
find $DEST_DIR$DEST_ROOT -name lto.h -delete
################################################################################
# Remove debugging information from DEST_DIR.
cd $DIR || exit 1
find $DEST_DIR -name \*.a -print | xargs ranlib || exit 1
find $DEST_DIR -name \*.dSYM -print | xargs rm -r || exit 1
# Strip debugging information from files
#
# Use '-l' to strip i386 modules. N.B. that flag doesn't work with kext or
# PPC objects!
find $DEST_DIR -perm -0111 -type f \
! \( -name '*.la' -o -name gccas -o -name gccld -o -name llvm-config \) \
-print | xargs -n 1 -P ${SYSCTL} $STRIP -arch all -Sl
chgrp -h -R wheel $DEST_DIR
chgrp -R wheel $DEST_DIR
################################################################################
# Remove the docs directory
rm -rf $DEST_DIR$DEST_ROOT/docs
################################################################################
# w00t! Done!
exit 0
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