# Copyright (C) 2012 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# A set of function shared by the 'build-host-xxxx.sh' scripts.
# They are mostly related to building host libraries.
#
# NOTE: This script uses various prefixes:
#
# BH_ Used for public macros
# bh_ Use for public functions
#
# _BH_ Used for private macros
# _bh_ Used for private functions
#
# Callers should only rely on the public macros and functions defined here.
#
# List of macros defined by the functions here:
#
# defined by 'bh_set_build_tag'
#
# BH_BUILD_CONFIG Generic GNU config triplet for build system
# BH_BUILD_OS NDK system name
# BH_BUILD_ARCH NDK arch name
# BH_BUILD_TAG NDK system tag ($OS-$ARCH)
# BH_BUILD_BITS build system bitness (32 or 64)
#
# defined by 'bh_set_host_tag'
# 7
# BH_HOST_CONFIG
# BH_HOST_OS
# BH_HOST_ARCH
# BH_HOST_TAG
# BH_HOST_BITS
#
# defined by 'bh_set_target_tag'
#
# BH_TARGET_CONFIG
# BH_TARGET_OS
# BH_TARGET_ARCH
# BH_TARGET_TAG
# BH_TARGET_BITS
#
#
# The values of HOST_OS/ARCH/TAG will be redefined during the build to
# match those of the system the generated compiler binaries will run on.
#
# Save the original ones into BUILD_XXX variants, corresponding to the
# machine where the build happens.
#
BH_BUILD_OS=$HOST_OS
BH_BUILD_ARCH=$HOST_ARCH
BH_BUILD_TAG=$HOST_TAG
# Map an NDK system tag to an OS name
# $1: system tag (e.g. linux-x86)
# Out: system name (e.g. linux)
bh_tag_to_os ()
{
local RET
case $1 in
android-*) RET="android";;
linux-*) RET="linux";;
darwin-*) RET="darwin";;
windows|windows-*) RET="windows";;
esac
echo $RET
}
# Map an NDK system tag to an architecture name
# $1: system tag (e.g. linux-x86)
# Out: arch name (e.g. x86)
bh_tag_to_arch ()
{
local RET
case $1 in
*-arm) RET=arm;;
*-mips) RET=mips;;
windows|*-x86) RET=x86;;
*-x86_64) RET=x86_64;;
esac
echo $RET
}
# Map an NDK system tag to a bit number
# $1: system tag (e.g. linux-x86)
# Out: bit number (32 or 64)
bh_tag_to_bits ()
{
local RET
case $1 in
windows|*-x86|*-arm|*-mips) RET=32;;
*-x86_64) RET=64;;
esac
echo $RET
}
# Map an NDK system tag to the corresponding GNU configuration triplet.
# $1: NDK system tag
# Out: GNU configuration triplet
bh_tag_to_config_triplet ()
{
local RET
case $1 in
linux-x86) RET=i686-linux-gnu;;
linux-x86_64) RET=x86_64-linux-gnu;;
darwin-x86) RET=i686-apple-darwin;;
darwin-x86_64) RET=x86_64-apple-darwin;;
windows|windows-x86) RET=i586-pc-mingw32msvc;;
windows-x86_64) RET=x86_64-w64-mingw32;;
android-arm) RET=arm-linux-androideabi;;
android-x86) RET=i686-linux-android;;
android-mips) RET=mipsel-linux-android;;
esac
echo "$RET"
}
bh_set_build_tag ()
{
BH_BUILD_OS=$(bh_tag_to_os $1)
BH_BUILD_ARCH=$(bh_tag_to_arch $1)
BH_BUILD_BITS=$(bh_tag_to_bits $1)
BH_BUILD_TAG=$BH_BUILD_OS-$BH_BUILD_ARCH
BH_BUILD_CONFIG=$(bh_tag_to_config_triplet $1)
}
# Set default BH_BUILD macros.
bh_set_build_tag $HOST_TAG
bh_set_host_tag ()
{
BH_HOST_OS=$(bh_tag_to_os $1)
BH_HOST_ARCH=$(bh_tag_to_arch $1)
BH_HOST_BITS=$(bh_tag_to_bits $1)
BH_HOST_TAG=$BH_HOST_OS-$BH_HOST_ARCH
BH_HOST_CONFIG=$(bh_tag_to_config_triplet $1)
}
bh_set_target_tag ()
{
BH_TARGET_OS=$(bh_tag_to_os $1)
BH_TARGET_ARCH=$(bh_tag_to_arch $1)
BH_TARGET_BITS=$(bh_tag_to_bits $1)
BH_TARGET_TAG=$BH_TARGET_OS-$BH_TARGET_ARCH
BH_TARGET_CONFIG=$(bh_tag_to_config_triplet $1)
}
bh_sort_systems_build_first ()
{
local IN_SYSTEMS="$1"
local OUT_SYSTEMS
# Pull out the host if there
for IN_SYSTEM in $IN_SYSTEMS; do
if [ "$IN_SYSTEM" = "$BH_BUILD_TAG" ]; then
OUT_SYSTEMS=$IN_SYSTEM
fi
done
# Append the rest
for IN_SYSTEM in $IN_SYSTEMS; do
if [ ! "$IN_SYSTEM" = "$BH_BUILD_TAG" ]; then
OUT_SYSTEMS=$OUT_SYSTEMS" $IN_SYSTEM"
fi
done
echo $OUT_SYSTEMS
}
# $1 is the string to search for
# $2... is the list to search in
# Returns first, yes or no.
bh_list_contains ()
{
local SEARCH="$1"
shift
# For dash, this has to be split over 2 lines.
# Seems to be a bug with dash itself:
# https://bugs.launchpad.net/ubuntu/+source/dash/+bug/141481
local LIST
LIST=$@
local RESULT=first
# Pull out the host if there
for ELEMENT in $LIST; do
if [ "$ELEMENT" = "$SEARCH" ]; then
echo $RESULT
return 0
fi
RESULT=yes
done
echo no
return 1
}
# Use this function to enable/disable colored output
# $1: 'true' or 'false'
bh_set_color_mode ()
{
local DO_COLOR=
case $1 in
on|enable|true) DO_COLOR=true
;;
esac
if [ "$DO_COLOR" ]; then
_BH_COLOR_GREEN="\033[32m"
_BH_COLOR_PURPLE="\033[35m"
_BH_COLOR_CYAN="\033[36m"
_BH_COLOR_END="\033[0m"
else
_BH_COLOR_GREEN=
_BH_COLOR_PURPLE=
_BH_COLOR_CYAN=
_BH_COLOR_END=
fi
}
# By default, enable color mode
bh_set_color_mode true
# Pretty printing with colors!
bh_host_text ()
{
printf "[${_BH_COLOR_GREEN}${BH_HOST_TAG}${_BH_COLOR_END}]"
}
bh_toolchain_text ()
{
printf "[${_BH_COLOR_PURPLE}${BH_TOOLCHAIN}${_BH_COLOR_END}]"
}
bh_target_text ()
{
printf "[${_BH_COLOR_CYAN}${BH_TARGET_TAG}${_BH_COLOR_END}]"
}
bh_arch_text ()
{
# Print arch name in cyan
printf "[${_BH_COLOR_CYAN}${BH_TARGET_ARCH}${_BH_COLOR_END}]"
}
_bh_extract_version ()
{
echo $1 | tr '-' '\n' | tail -1
}
# Given an input string of the form <foo>-<bar>-<version>, where
# <version> can be <major>.<minor>, extract <major>
#
# $1: versioned name (e.g. arm-linux-androideabi-4.4.3)
# Out: major version (e.g. 4)
#
# Examples: arm-linux-androideabi-4.4.3 -> 4
# gmp-0.81 -> 0
#
bh_extract_major_version ()
{
local RET=$(_bh_extract_version $1 | cut -d . -f 1)
RET=${RET:-0}
echo $RET
}
# Same as extract_major_version, but for the minor version number
# $1: versioned named
# Out: minor version
#
bh_extract_minor_version ()
{
local RET=$(_bh_extract_version $1 | cut -d . -f 2)
RET=${RET:-0}
echo $RET
}
# Compare two version numbers and only succeeds if the first one is
# greather or equal than the second one.
#
# $1: first version (e.g. 4.4.3)
# $2: second version (e.g. 4.6)
#
# Example: version_is_greater_than 4.6 4.4.3 --> success
#
bh_version_is_greater_than ()
{
local A_MAJOR A_MINOR B_MAJOR B_MINOR
A_MAJOR=$(bh_extract_major_version $1)
B_MAJOR=$(bh_extract_major_version $2)
if [ $A_MAJOR -lt $B_MAJOR ]; then
return 1
elif [ $A_MAJOR -gt $B_MAJOR ]; then
return 0
fi
# We have A_MAJOR == B_MAJOR here
A_MINOR=$(bh_extract_minor_version $1)
B_MINOR=$(bh_extract_minor_version $2)
if [ $A_MINOR -lt $B_MINOR ]; then
return 1
else
return 0
fi
}
# Check that a given compiler generates code correctly
#
# This is to detect bad/broken toolchains, e.g. amd64-mingw32msvc
# is totally broken on Ubuntu 10.10 and 11.04
#
# $1: compiler
# $2: optional extra flags
#
bh_check_compiler ()
{
local CC="$1"
local TMPC=/tmp/build-host-$USER-$$.c
local TMPE=${TMPC%%.c}
local TMPL=$TMPC.log
local RET
shift
cat > $TMPC <<EOF
int main(void) { return 0; }
EOF
log_n "Checking compiler code generation ($CC)... "
$CC -o $TMPE $TMPC "$@" >$TMPL 2>&1
RET=$?
rm -f $TMPC $TMPE $TMPL
if [ "$RET" = 0 ]; then
log "yes"
else
log "no"
fi
return $RET
}
# $1: toolchain install dir
# $2: toolchain prefix, no trailing dash (e.g. arm-linux-androideabi)
# $3: optional -m32 or -m64.
_bh_try_host_fullprefix ()
{
local PREFIX="$1/bin/$2"
shift; shift;
if [ -z "$HOST_FULLPREFIX" ]; then
local GCC="$PREFIX-gcc"
if [ -f "$GCC" ]; then
if bh_check_compiler "$GCC" "$@"; then
HOST_FULLPREFIX="${GCC%%gcc}"
dump "$(bh_host_text) Using host gcc: $GCC $@"
else
dump "$(bh_host_text) Ignoring broken host gcc: $GCC $@"
fi
fi
fi
}
# $1: host prefix, no trailing slash (e.g. i686-linux-android)
# $2: optional compiler args (should be empty, -m32 or -m64)
_bh_try_host_prefix ()
{
local PREFIX="$1"
shift
if [ -z "$HOST_FULLPREFIX" ]; then
local GCC="$(which $PREFIX-gcc 2>/dev/null)"
if [ "$GCC" -a -e "$GCC" ]; then
if bh_check_compiler "$GCC" "$@"; then
HOST_FULLPREFIX=${GCC%%gcc}
dump "$(bh_host_text) Using host gcc: ${HOST_FULLPREFIX}gcc $@"
else
dump "$(bh_host_text) Ignoring broken host gcc: $GCC $@"
fi
fi
fi
}
# Used to determine the minimum possible Darwin version that a Darwin SDK
# can target. This actually depends from the host architecture.
# $1: Host architecture name
# out: SDK version number (e.g. 10.4 or 10.5)
_bh_darwin_arch_to_min_version ()
{
if [ "$1" = "x86" ]; then
echo "10.4"
else
echo "10.5"
fi
}
# Use the check for the availability of a compatibility SDK in Darwin
# this can be used to generate binaries compatible with either Tiger or
# Leopard.
#
# $1: SDK root path
# $2: Darwin compatibility minimum version
_bh_check_darwin_sdk ()
{
if [ -d "$1" -a -z "$HOST_CFLAGS" ] ; then
HOST_CFLAGS="-isysroot $1 -mmacosx-version-min=$2 -DMAXOSX_DEPLOYEMENT_TARGET=$2"
HOST_CXXFLAGS=$HOST_CFLAGS
HOST_LDFLAGS="-syslibroot $1 -mmacosx-version-min=$2"
dump "Generating $2-compatible binaries."
return 0 # success
fi
return 1
}
# Check that a given compiler generates 32 or 64 bit code.
# $1: compiler full path (.e.g /path/to/fullprefix-gcc)
# $2: 32 or 64
# $3: extract compiler flags
# Return: success iff the compiler generates $2-bits code
_bh_check_compiler_bitness ()
{
local CC="$1"
local BITS="$2"
local TMPC=/tmp/build-host-gcc-bits-$USER-$$.c
local TMPL=$TMPC.log
local RET
shift; shift;
cat > $TMPC <<EOF
/* this program will fail to compile if the compiler doesn't generate BITS-bits code */
int tab[1-2*(sizeof(void*)*8 != BITS)];
EOF
dump_n "$(bh_host_text) Checking that the compiler generates $BITS-bits code ($@)... "
$CC -c -DBITS=$BITS -o /dev/null $TMPC $HOST_CFLAGS "$@" > $TMPL 2>&1
RET=$?
rm -f $TMPC $TMPL
if [ "$RET" = 0 ]; then
dump "yes"
else
dump "no"
fi
return $RET
}
# This function probes the system to find the best toolchain or cross-toolchain
# to build binaries that run on a given host system. After that, it generates
# a wrapper toolchain under $2 with a prefix of ${BH_HOST_CONFIG}-
# where $BH_HOST_CONFIG is a GNU configuration name.
#
# Important: this script might redefine $BH_HOST_CONFIG to a different value!
#
# $1: NDK system tag (e.g. linux-x86)
#
# The following can be defined, otherwise they'll be auto-detected and set.
#
# DARWIN_MIN_VERSION -> Darwmin minimum compatibility version
# DARWIN_SDK_VERSION -> Darwin SDK version
#
# The following can be defined for extra features:
#
# DARWIN_TOOLCHAIN -> Path to Darwin cross-toolchain (cross-compile only).
# DARWIN_SYSROOT -> Path to Darwin SDK sysroot (cross-compile only).
# NDK_CCACHE -> Ccache binary to use to speed up rebuilds.
# ANDROID_NDK_ROOT -> Top-level NDK directory, for automatic probing
# of prebuilt platform toolchains.
#
_bh_select_toolchain_for_host ()
{
local HOST_CFLAGS HOST_CXXFLAGS HOST_LDFLAGS HOST_FULLPREFIX DARWIN_ARCH
local DARWIN_ARCH DARWIN_SDK_SUBDIR
# We do all the complex auto-detection magic in the setup phase,
# then save the result in host-specific global variables.
#
# In the build phase, we will simply restore the values into the
# global HOST_FULLPREFIX / HOST_BUILD_DIR
# variables.
#
# Try to find the best toolchain to do that job, assuming we are in
# a full Android platform source checkout, we can look at the prebuilts/
# directory.
case $1 in
linux-x86)
# If possible, automatically use our custom toolchain to generate
# 32-bit executables that work on Ubuntu 8.04 and higher.
_bh_try_host_fullprefix "$(dirname $ANDROID_NDK_ROOT)/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.6" i686-linux
_bh_try_host_fullprefix "$(dirname $ANDROID_NDK_ROOT)/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.4.3" i686-linux
_bh_try_host_fullprefix "$(dirname $ANDROID_NDK_ROOT)/prebuilt/linux-x86/toolchain/i686-linux-glibc2.7-4.4.3" i686-linux
_bh_try_host_prefix i686-linux-gnu
_bh_try_host_prefix i686-linux
_bh_try_host_prefix x86_64-linux-gnu -m32
_bh_try_host_prefix x86_64-linux -m32
;;
linux-x86_64)
# If possible, automaticaly use our custom toolchain to generate
# 64-bit executables that work on Ubuntu 8.04 and higher.
_bh_try_host_fullprefix "$(dirname $ANDROID_NDK_ROOT)/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6" x86_64-linux
_bh_try_host_prefix x86_64-linux-gnu
_bh_try_host_prefix x84_64-linux
_bh_try_host_prefix i686-linux-gnu -m64
_bh_try_host_prefix i686-linux -m64
;;
darwin-*)
DARWIN_ARCH=$(bh_tag_to_arch $1)
if [ -z "$DARWIN_MIN_VERSION" ]; then
DARWIN_MIN_VERSION=$(_bh_darwin_arch_to_min_version $DARWIN_ARCH)
fi
case $BH_BUILD_OS in
darwin)
if [ "$DARWIN_SDK_VERSION" ]; then
# Compute SDK subdirectory name
case $DARWIN_SDK_VERSION in
10.4) DARWIN_SDK_SUBDIR=$DARWIN_SDK.sdku;;
*) DARWIN_SDK_SUBDIR=$DARWIN_SDK.sdk;;
esac
# Since xCode moved to the App Store the SDKs have been 'sandboxed' into the Xcode.app folder.
_bh_check_darwin_sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX$DARWIN_SDK_SUBDIR $DARWIN_MIN_VERSION
_bh_check_darwin_sdk /Developer/SDKs/MacOSX$DARWIN_SDK_SUBDIR $DARWIN_MIN_VERSION
else
# Since xCode moved to the App Store the SDKs have been 'sandboxed' into the Xcode.app folder.
_bh_check_darwin_sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk $DARWIN_MIN_VERSION
_bh_check_darwin_sdk /Developer/SDKs/MacOSX10.7.sdk $DARWIN_MIN_VERSION
_bh_check_darwin_sdk /Developer/SDKs/MacOSX10.6.sdk $DARWIN_MIN_VERSION
# NOTE: The 10.5.sdk on Lion is buggy and cannot build basic C++ programs
#_bh_check_darwin_sdk /Developer/SDKs/MacOSX10.5.sdk $DARWIN_ARCH
# NOTE: The 10.4.sdku is not available anymore and could not be tested.
#_bh_check_darwin_sdk /Developer/SDKs/MacOSX10.4.sdku $DARWIN_ARCH
fi
if [ -z "$HOST_CFLAGS" ]; then
local version="$(sw_vers -productVersion)"
log "Generating $version-compatible binaries!"
fi
;;
*)
if [ -z "$DARWIN_TOOLCHAIN" -o -z "$DARWIN_SYSROOT" ]; then
dump "If you want to build Darwin binaries on a non-Darwin machine,"
dump "Please define DARWIN_TOOLCHAIN to name it, and DARWIN_SYSROOT to point"
dump "to the SDK. For example:"
dump ""
dump " DARWIN_TOOLCHAIN=\"i686-apple-darwin11\""
dump " DARWIN_SYSROOT=\"~/darwin-cross/MacOSX10.7.sdk\""
dump " export DARWIN_TOOLCHAIN DARWIN_SYSROOT"
dump ""
exit 1
fi
_bh_check_darwin_sdk $DARWIN_SYSROOT $DARWIN_MIN_VERSION
_bh_try_host_prefix "$DARWIN_TOOLCHAIN" -m$(bh_tag_to_bits $1) --sysroot "$DARWIN_SYSROOT"
if [ -z "$HOST_FULLPREFIX" ]; then
dump "It looks like $DARWIN_TOOLCHAIN-gcc is not in your path, or does not work correctly!"
exit 1
fi
dump "Using darwin cross-toolchain: ${HOST_FULLPREFIX}gcc"
;;
esac
;;
windows|windows-x86)
case $BH_BUILD_OS in
linux)
# We favor these because they are more recent, and because
# we have a script to rebuild them from scratch. See
# build-mingw64-toolchain.sh.
_bh_try_host_prefix x86_64-w64-mingw32 -m32
_bh_try_host_prefix i686-w64-mingw32
# Typically provided by the 'mingw32' package on Debian
# and Ubuntu systems.
_bh_try_host_prefix i586-mingw32msvc
# Special note for Fedora: this distribution used
# to have a mingw32-gcc package that provided a 32-bit
# only cross-toolchain named i686-pc-mingw32.
# Later versions of the distro now provide a new package
# named mingw-gcc which provides i686-w64-mingw32 and
# x86_64-w64-mingw32 instead.
_bh_try_host_prefix i686-pc-mingw32
if [ -z "$HOST_FULLPREFIX" ]; then
dump "There is no Windows cross-compiler. Ensure that you"
dump "have one of these installed and in your path:"
dump " x86_64-w64-mingw32-gcc (see build-mingw64-toolchain.sh)"
dump " i686-w64-mingw32-gcc (see build-mingw64-toolchain.sh)"
dump " i586-mingw32msvc-gcc ('mingw32' Debian/Ubuntu package)"
dump " i686-pc-mingw32 (on Fedora)"
dump ""
exit 1
fi
# Adjust $HOST to match the toolchain to ensure proper builds.
# I.e. chose configuration triplets that are known to work
# with the gmp/mpfr/mpc/binutils/gcc configure scripts.
case $HOST_FULLPREFIX in
*-mingw32msvc-*|i686-pc-mingw32)
BH_HOST_CONFIG=i586-pc-mingw32msvc
;;
*)
BH_HOST_CONFIG=i686-w64-mingw32msvc
;;
esac
;;
*) panic "Sorry, this script only supports building windows binaries on Linux."
;;
esac
HOST_CFLAGS=$HOST_CFLAGS" -D__USE_MINGW_ANSI_STDIO=1"
HOST_CXXFLAGS=$HOST_CXXFLAGS" -D__USE_MINGW_ANSI_STDIO=1"
;;
windows-x86_64)
case $BH_BUILD_OS in
linux)
# See comments above for windows-x86
_bh_try_host_prefix x86_64-w64-mingw32
_bh_try_host_prefix i686-w64-mingw32 -m64
# Beware that this package is completely broken on many
# versions of no vinegar Ubuntu (i.e. it fails at building trivial
# programs).
_bh_try_host_prefix amd64-mingw32msvc
# There is no x86_64-pc-mingw32 toolchain on Fedora.
if [ -z "$HOST_FULLPREFIX" ]; then
dump "There is no Windows cross-compiler in your path. Ensure you"
dump "have one of these installed and in your path:"
dump " x86_64-w64-mingw32-gcc (see build-mingw64-toolchain.sh)"
dump " i686-w64-mingw32-gcc (see build-mingw64-toolchain.sh)"
dump " amd64-mingw32msvc-gcc (Debian/Ubuntu - broken until Ubuntu 11.10)"
dump ""
exit 1
fi
# See comment above for windows-x86
case $HOST_FULLPREFIX in
*-mingw32msvc*)
# Actually, this has never been tested.
BH_HOST=amd64-pc-mingw32msvc
;;
*)
BH_HOST=x86_64-w64-mingw32
;;
esac
;;
*) panic "Sorry, this script only supports building windows binaries on Linux."
;;
esac
HOST_CFLAGS=$HOST_CFLAGS" -D__USE_MINGW_ANSI_STDIO=1"
HOST_CXXFLAGS=$HOST_CXXFLAGS" -D__USE_MINGW_ANSI_STDIO=1"
;;
esac
# Determine the default bitness of our compiler. It it doesn't match
# HOST_BITS, tries to see if it supports -m32 or -m64 to change it.
if ! _bh_check_compiler_bitness ${HOST_FULLPREFIX}gcc $BH_HOST_BITS; then
local TRY_CFLAGS
case $BH_HOST_BITS in
32) TRY_CFLAGS=-m32;;
64) TRY_CFLAGS=-m64;;
esac
if ! _bh_check_compiler_bitness ${HOST_FULLPREFIX}gcc $BH_HOST_BITS $TRY_CFLAGS; then
panic "Can't find a way to generate $BH_HOST_BITS binaries with this compiler: ${HOST_FULLPREFIX}gcc"
fi
HOST_CFLAGS=$HOST_CFLAGS" "$TRY_CFLAGS
HOST_CXXFLAGS=$HOST_CXXFLAGS" "$TRY_CFLAGS
fi
# Support for ccache, to speed up rebuilds.
DST_PREFIX=$HOST_FULLPREFIX
local CCACHE=
if [ "$NDK_CCACHE" ]; then
CCACHE="--ccache=$NDK_CCACHE"
fi
# We're going to generate a wrapper toolchain with the $HOST prefix
# i.e. if $HOST is 'i686-linux-gnu', then we're going to generate a
# wrapper toolchain named 'i686-linux-gnu-gcc' that will redirect
# to whatever HOST_FULLPREFIX points to, with appropriate modifier
# compiler/linker flags.
#
# This helps tremendously getting stuff to compile with the GCC
# configure scripts.
#
run mkdir -p "$BH_WRAPPERS_DIR" &&
run $NDK_BUILDTOOLS_PATH/gen-toolchain-wrapper.sh "$BH_WRAPPERS_DIR" \
--src-prefix="$BH_HOST_CONFIG-" \
--dst-prefix="$DST_PREFIX" \
--cflags="$HOST_CFLAGS" \
--cxxflags="$HOST_CXXFLAGS" \
--ldflags="$HOST_LDFLAGS" \
$CCACHE
}
# Setup the build directory, i.e. a directory where all intermediate
# files will be placed.
#
# $1: Build directory. If empty, a random one will be selected.
#
# $2: Either 'preserve' or 'remove'. Indicates what to do of
# existing files in the build directory, if any.
#
# $3: Either 'release' or 'debug'. Compilation mode.
#
bh_setup_build_dir ()
{
BH_BUILD_DIR="$1"
if [ -z "$BH_BUILD_DIR" ]; then
BH_BUILD_DIR=/tmp/ndk-$USER/buildhost
fi
mkdir -p "$BH_BUILD_DIR"
fail_panic "Could not create build directory: $BH_BUILD_DIR"
setup_default_log_file $BH_BUILD_DIR/build.log
if [ "$_BH_OPTION_FORCE" ]; then
rm -rf "$BH_BUILD_DIR"/*
fi
if [ "$_BH_OPTION_NO_STRIP" ]; then
BH_BUILD_MODE=debug
else
BH_BUILD_MODE=release
fi
# The directory that will contain our toolchain wrappers
BH_WRAPPERS_DIR=$BH_BUILD_DIR/toolchain-wrappers
rm -rf "$BH_WRAPPERS_DIR" && mkdir "$BH_WRAPPERS_DIR"
fail_panic "Could not create wrappers dir: $BH_WRAPPERS_DIR"
# The directory that will contain our timestamps
BH_STAMPS_DIR=$BH_BUILD_DIR/timestamps
mkdir -p "$BH_STAMPS_DIR"
fail_panic "Could not create timestamps dir"
}
# Call this before anything else to setup a few important variables that are
# used consistently to build any host-specific binaries.
#
# $1: Host system name (e.g. linux-x86), this is the name of the host system
# where the generated GCC binaries will run, not the current machine's
# type (this one is in $ORIGINAL_HOST_TAG instead).
#
bh_setup_build_for_host ()
{
local HOST_VARNAME=$(dashes_to_underscores $1)
local HOST_VAR=_BH_HOST_${HOST_VARNAME}
# Determine the host configuration triplet in $HOST
bh_set_host_tag $1
# Note: since _bh_select_toolchain_for_host can change the value of
# $BH_HOST_CONFIG, we need to save it in a variable to later get the
# correct one when this function is called again.
if [ -z "$(var_value ${HOST_VAR}_SETUP)" ]; then
_bh_select_toolchain_for_host $1
var_assign ${HOST_VAR}_CONFIG $BH_HOST_CONFIG
var_assign ${HOST_VAR}_SETUP true
else
BH_HOST_CONFIG=$(var_value ${HOST_VAR}_CONFIG)
fi
}
# This function is used to setup the build environment whenever we
# generate host-specific binaries. You should call it before invoking
# a configure script or make.
#
# It assume sthat bh_setup_build_for_host was called with the right
# host system tag and wrappers directory.
#
bh_setup_host_env ()
{
CC=$BH_HOST_CONFIG-gcc
CXX=$BH_HOST_CONFIG-g++
LD=$BH_HOST_CONFIG-ld
AR=$BH_HOST_CONFIG-ar
AS=$BH_HOST_CONFIG-as
RANLIB=$BH_HOST_CONFIG-ranlib
NM=$BH_HOST_CONFIG-nm
STRIP=$BH_HOST_CONFIG-strip
STRINGS=$BH_HOST_CONFIG-strings
export CC CXX LD AR AS RANLIB NM STRIP STRINGS
CFLAGS=
CXXFLAGS=
LDFLAGS=
case $BH_BUILD_MODE in
release)
CFLAGS="-O2 -Os -fomit-frame-pointer -s"
CXXFLAGS=$CFLAGS
;;
debug)
CFLAGS="-O0 -g"
CXXFLAGS=$CFLAGS
;;
esac
export CFLAGS CXXFLAGS LDFLAGS
PATH=$BH_WRAPPERS_DIR:$PATH
}
_bh_option_no_color ()
{
bh_set_color_mode off
}
# This function is used to register a few command-line options that
# impact the build of host binaries. Call it before invoking
# extract_parameters to add them automatically.
#
bh_register_options ()
{
BH_HOST_SYSTEMS="$BH_BUILD_TAG"
register_var_option "--systems=<list>" BH_HOST_SYSTEMS "Build binaries that run on these systems."
_BH_OPTION_FORCE=
register_var_option "--force" _BH_OPTION_FORCE "Force rebuild."
_BH_OPTION_NO_STRIP=
register_var_option "--no-strip" _BH_OPTION_NO_STRIP "Don't strip generated binaries."
register_option "--no-color" _bh_option_no_color "Don't output colored text."
if [ "$HOST_OS" = darwin ]; then
DARWIN_SDK_VERSION=
register_var_option "--darwin-sdk-version=<version>" DARWIN_SDK "Select Darwin SDK version."
DARWIN_MIN_VERSION=
register_var_option "--darwin-min-version=<version>" DARWIN_MIN_VERSION "Select minimum OS X version of generated host toolchains."
fi
}
# Execute a given command if the corresponding timestamp hasn't been touched
#
# NOTE: The command is run in its own sub-shell to avoid environment
# contamination.
#
# $1: timestamps name
# $2+: command
bh_stamps_do ()
{
local STAMP_NAME=$1
shift
if [ ! -f "$BH_STAMPS_DIR/$STAMP_NAME" ]; then
("$@")
fail_panic
mkdir -p "$BH_STAMPS_DIR" && touch "$BH_STAMPS_DIR/$STAMP_NAME"
fi
}