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# Copyright (C) 2008 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.
#
# This file is included by other shell scripts; do not execute it directly.
# It contains common definitions.
#
PROGNAME=`basename $0`
## Logging support
##
VERBOSE=yes
VERBOSE2=no
log ()
{
if [ "$VERBOSE" = "yes" ] ; then
echo "$1"
fi
}
log2 ()
{
if [ "$VERBOSE2" = "yes" ] ; then
echo "$1"
fi
}
## Utilities
##
# return the value of a given named variable
# $1: variable name
#
var_value ()
{
# find a better way to do that ?
local result
eval result="$`echo $1`"
echo $result
}
# convert to uppercase
to_uppercase ()
{
echo $1 | tr "[:lower:]" "[:upper:]"
}
## Normalize OS and CPU
##
CPU=`uname -m`
case "$CPU" in
i?86) CPU=x86
;;
amd64) CPU=x86_64
;;
powerpc) CPU=ppc
;;
esac
log2 "CPU=$CPU"
# at this point, the supported values for CPU are:
# x86
# x86_64
# ppc
#
# other values may be possible but haven't been tested
#
EXE=""
OS=`uname -s`
case "$OS" in
Darwin)
OS=darwin-$CPU
;;
Linux)
# note that building 32-bit binaries on x86_64 is handled later
OS=linux-$CPU
;;
FreeBSD)
OS=freebsd-$CPU
;;
CYGWIN*|*_NT-*)
OS=windows
EXE=.exe
if [ "x$OSTYPE" = xcygwin ] ; then
OS=cygwin
HOST_CFLAGS="$CFLAGS -mno-cygwin"
HOST_LDFLAGS="$LDFLAGS -mno-cygwin"
fi
;;
esac
log2 "OS=$OS"
log2 "EXE=$EXE"
# at this point, the value of OS should be one of the following:
# linux-x86
# linux-x86_64
# darwin-x86
# darwin-ppc
# windows (MSys)
# cygwin
#
# Note that cygwin is treated as a special case because it behaves very differently
# for a few things
#
# other values may be possible but have not been tested
# define HOST_OS as $OS without any cpu-specific suffix
#
case $OS in
linux-*) HOST_OS=linux
;;
darwin-*) HOST_OS=darwin
;;
freebsd-*) HOST_OS=freebsd
;;
*) HOST_OS=$OS
esac
# define HOST_ARCH as the $CPU
HOST_ARCH=$CPU
# define HOST_TAG
# special case: windows-x86 => windows
compute_host_tag ()
{
case $HOST_OS-$HOST_ARCH in
cygwin-x86|windows-x86)
HOST_TAG=windows
;;
*)
HOST_TAG=$HOST_OS-$HOST_ARCH
;;
esac
}
compute_host_tag
#### Toolchain support
####
# Various probes are going to need to run a small C program
TMPC=/tmp/android-$$-test.c
TMPO=/tmp/android-$$-test.o
TMPE=/tmp/android-$$-test$EXE
TMPL=/tmp/android-$$-test.log
# cleanup temporary files
clean_temp ()
{
rm -f $TMPC $TMPO $TMPL $TMPE
}
# cleanup temp files then exit with an error
clean_exit ()
{
clean_temp
exit 1
}
# this function should be called to enforce the build of 32-bit binaries on 64-bit systems
# that support it.
FORCE_32BIT=no
force_32bit_binaries ()
{
if [ $CPU = x86_64 ] ; then
FORCE_32BIT=yes
case $OS in
linux-x86_64) OS=linux-x86 ;;
darwin-x86_64) OS=darwin-x86 ;;
freebsd-x86_64) OS=freebsd-x86 ;;
esac
HOST_ARCH=x86
CPU=x86
compute_host_tag
log "Check32Bits: Forcing generation of 32-bit binaries (--try-64 to disable)"
fi
}
# Enable linux-mingw32 compilation. This allows you to build
# windows executables on a Linux machine, which is considerably
# faster than using Cygwin / MSys to do the same job.
#
enable_linux_mingw ()
{
# Are we on Linux ?
log "Mingw : Checking for Linux host"
if [ "$HOST_OS" != "linux" ] ; then
echo "Sorry, but mingw compilation is only supported on Linux !"
exit 1
fi
# Do we have the binaries installed
log "Mingw : Checking for mingw32 installation"
MINGW32_PREFIX=i586-mingw32msvc
find_program MINGW32_CC $MINGW32_PREFIX-gcc
if [ -z "$MINGW32_CC" ] ; then
echo "ERROR: It looks like $MINGW32_PREFIX-gcc is not in your path"
echo "Please install the mingw32 package !"
exit 1
fi
log2 "Mingw : Found $MINGW32_CC"
CC=$MINGW32_CC
LD=$MINGW32_CC
AR=$MINGW32_PREFIX-ar
FORCE_32BIT=no
}
# Cygwin is normally not supported, unless you call this function
#
enable_cygwin ()
{
if [ $OS = cygwin ] ; then
CFLAGS="$CFLAGS -mno-cygwin"
LDFLAGS="$LDFLAGS -mno-cygwin"
OS=windows
HOST_OS=windows
fi
}
# this function will setup the compiler and linker and check that they work as advertized
# note that you should call 'force_32bit_binaries' before this one if you want it to work
# as advertized.
#
setup_toolchain ()
{
if [ "$OS" = cygwin ] ; then
echo "Do not compile this program or library with Cygwin, use MSYS instead !!"
echo "As an experimental feature, you can try to --try-cygwin option to override this"
exit 2
fi
if [ -z "$CC" ] ; then
CC=gcc
if [ $CPU = "powerpc" ] ; then
CC=gcc-3.3
fi
fi
# check that we can compile a trivial C program with this compiler
cat > $TMPC <<EOF
int main(void) {}
EOF
if [ $FORCE_32BIT = yes ] ; then
CFLAGS="$CFLAGS -m32"
LDFLAGS="$LDFLAGS -m32"
compile
if [ $? != 0 ] ; then
# sometimes, we need to also tell the assembler to generate 32-bit binaries
# this is highly dependent on your GCC installation (and no, we can't set
# this flag all the time)
CFLAGS="$CFLAGS -Wa,--32"
compile
fi
fi
compile
if [ $? != 0 ] ; then
echo "your C compiler doesn't seem to work: $CC"
cat $TMPL
clean_exit
fi
log "CC : compiler check ok ($CC)"
# check that we can link the trivial program into an executable
if [ -z "$LD" ] ; then
LD=$CC
fi
link
if [ $? != 0 ] ; then
OLD_LD=$LD
LD=gcc
compile
link
if [ $? != 0 ] ; then
LD=$OLD_LD
echo "your linker doesn't seem to work:"
cat $TMPL
clean_exit
fi
fi
log "LD : linker check ok ($LD)"
if [ -z "$AR" ]; then
AR=ar
fi
log "AR : archiver ($AR)"
}
# try to compile the current source file in $TMPC into an object
# stores the error log into $TMPL
#
compile ()
{
log2 "Object : $CC -o $TMPO -c $CFLAGS $TMPC"
$CC -o $TMPO -c $CFLAGS $TMPC 2> $TMPL
}
# try to link the recently built file into an executable. error log in $TMPL
#
link()
{
log2 "Link : $LD -o $TMPE $TMPO $LDFLAGS"
$LD -o $TMPE $TMPO $LDFLAGS 2> $TMPL
}
# run a command
#
execute()
{
log2 "Running: $*"
$*
}
# perform a simple compile / link / run of the source file in $TMPC
compile_exec_run()
{
log2 "RunExec : $CC -o $TMPE $CFLAGS $TMPC"
compile
if [ $? != 0 ] ; then
echo "Failure to compile test program"
cat $TMPC
cat $TMPL
clean_exit
fi
link
if [ $? != 0 ] ; then
echo "Failure to link test program"
cat $TMPC
echo "------"
cat $TMPL
clean_exit
fi
$TMPE
}
## Feature test support
##
# Each feature test allows us to check against a single target-specific feature
# We run the feature checks in a Makefile in order to be able to do them in
# parallel, and we also have some cached values in our output directory, just
# in case.
#
# check that a given C program in $TMPC can be compiled on the host system
# $1: variable name which will be set to "yes" or "no" depending on result
# you can define EXTRA_CFLAGS for extra C compiler flags
# for convenience, this variable will be unset by the function
#
feature_check_compile ()
{
local result_cc=yes
local OLD_CFLAGS
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $EXTRA_CFLAGS"
compile
if [ $? != 0 ] ; then
result_cc=no
fi
eval $1=$result_cc
EXTRA_CFLAGS=
CFLAGS=$OLD_CFLAGS
}
# check that a given C program $TMPC can be linked on the host system
# $1: variable name which will be set to "yes" or "no" depending on result
# you can define EXTRA_CFLAGS for extra C compiler flags
# you can define EXTRA_LDFLAGS for extra linker flags
# for convenience, these variables will be unset by the function
#
feature_check_link ()
{
local result_cl=yes
local OLD_CFLAGS OLD_LDFLAGS
OLD_CFLAGS=$CFLAGS
OLD_LDFLAGS=$LDFLAGS
CFLAGS="$CFLAGS $EXTRA_CFLAGS"
LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
compile
if [ $? != 0 ] ; then
result_cl=no
else
link
if [ $? != 0 ] ; then
result_cl=no
fi
fi
CFLAGS=$OLD_CFLAGS
LDFLAGS=$OLD_LDFLAGS
eval $1=$result_cl
}
# check that a given C header file exists on the host system
# $1: variable name which will be set to "yes" or "no" depending on result
# $2: header name
#
# you can define EXTRA_CFLAGS for extra C compiler flags
# for convenience, this variable will be unset by the function.
#
feature_check_header ()
{
local result_ch
log "HeaderCheck: $2"
echo "#include $2" > $TMPC
cat >> $TMPC <<EOF
int main(void) { return 0; }
EOF
feature_check_compile result_ch
eval $1=$result_ch
#eval result=$`echo $1`
#log "Host : $1=$result_ch"
}
# run the test program that is in $TMPC and set its exit status
# in the $1 variable.
# you can define EXTRA_CFLAGS and EXTRA_LDFLAGS
#
feature_run_exec ()
{
local run_exec_result
local OLD_CFLAGS="$CFLAGS"
local OLD_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS $EXTRA_CFLAGS"
LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
compile_exec_run
run_exec_result=$?
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
eval $1=$run_exec_result
log "Host : $1=$run_exec_result"
}
## Android build system auto-detection
##
# check whether we're running within the Android build system
# sets the variable IN_ANDROID_BUILD to either "yes" or "no"
#
# in case of success, defines ANDROID_TOP to point to the top
# of the Android source tree.
#
check_android_build ()
{
unset ANDROID_TOP
IN_ANDROID_BUILD=no
if [ -z "$ANDROID_BUILD_TOP" ] ; then
return ;
fi
ANDROID_TOP=$ANDROID_BUILD_TOP
log "ANDROID_TOP found at $ANDROID_TOP"
# $ANDROID_TOP/config/envsetup.make is for the old tree layout
# $ANDROID_TOP/build/envsetup.sh is for the new one
ANDROID_CONFIG_MK=$ANDROID_TOP/build/core/config.mk
if [ ! -f $ANDROID_CONFIG_MK ] ; then
ANDROID_CONFIG_MK=$ANDROID_TOP/config/envsetup.make
fi
if [ ! -f $ANDROID_CONFIG_MK ] ; then
echo "Weird: Cannot find build system root defaulting to non-Android build"
unset ANDROID_TOP
return
fi
# normalize ANDROID_TOP, we don't want a trailing /
ANDROID_TOPDIR=`dirname $ANDROID_TOP`
if [ "$ANDROID_TOPDIR" != "." ] ; then
ANDROID_TOP=$ANDROID_TOPDIR/`basename $ANDROID_TOP`
fi
IN_ANDROID_BUILD=yes
}
# Get the value of an Android build variable as an absolute path.
# you should only call this if IN_ANDROID_BUILD is "yes"
#
get_android_abs_build_var ()
{
(cd $ANDROID_TOP && CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core make -f $ANDROID_CONFIG_MK dumpvar-abs-$1)
}
# Locate the Android prebuilt directory for your os
# you should only call this if IN_ANDROID_BUILD is "yes"
#
# This will set ANDROID_PREBUILT_HOST_TAG, ANDROID_PREBUILT and ANDROID_PREBUILTS
#
locate_android_prebuilt ()
{
# locate prebuilt directory
ANDROID_PREBUILT_HOST_TAG=$OS
ANDROID_PREBUILT=$ANDROID_TOP/prebuilt/$ANDROID_PREBUILT_HOST_TAG # AOSP still has it
ANDROID_PREBUILTS=$ANDROID_TOP/prebuilts/misc/$ANDROID_PREBUILT_HOST_TAG # AOSP does't have it yet
if [ ! -d $ANDROID_PREBUILT ] ; then
# this can happen when building on x86_64, or in AOSP
case $OS in
linux-x86_64)
ANDROID_PREBUILT_HOST_TAG=linux-x86
ANDROID_PREBUILT=$ANDROID_TOP/prebuilt/$ANDROID_PREBUILT_HOST_TAG
;;
*)
esac
if [ ! -d $ANDROID_PREBUILT ] ; then
ANDROID_PREBUILT=
fi
fi
if [ ! -d $ANDROID_PREBUILTS ] ; then
# this can happen when building on x86_64
case $OS in
linux-x86_64)
ANDROID_PREBUILT_HOST_TAG=linux-x86
ANDROID_PREBUILTS=$ANDROID_TOP/prebuilts/misc/$ANDROID_PREBUILT_HOST_TAG
;;
*)
esac
if [ ! -d $ANDROID_PREBUILTS ] ; then
ANDROID_PREBUILTS=
fi
fi
log "Prebuilt : ANDROID_PREBUILT=$ANDROID_PREBUILT"
log "Prebuilts : ANDROID_PREBUILTS=$ANDROID_PREBUILTS"
}
## Build configuration file support
## you must define $config_mk before calling this function
##
create_config_mk ()
{
# create the directory if needed
local config_dir
config_mk=${config_mk:-objs/config.make}
config_dir=`dirname $config_mk`
mkdir -p $config_dir 2> $TMPL
if [ $? != 0 ] ; then
echo "Can't create directory for build config file: $config_dir"
cat $TMPL
clean_exit
fi
# re-create the start of the configuration file
log "Generate : $config_mk"
echo "# This file was autogenerated by $PROGNAME. Do not edit !" > $config_mk
echo "OS := $OS" >> $config_mk
echo "HOST_OS := $HOST_OS" >> $config_mk
echo "HOST_ARCH := $HOST_ARCH" >> $config_mk
echo "CC := $CC" >> $config_mk
echo "HOST_CC := $CC" >> $config_mk
echo "LD := $LD" >> $config_mk
echo "AR := $AR" >> $config_mk
echo "CFLAGS := $CFLAGS" >> $config_mk
echo "LDFLAGS := $LDFLAGS" >> $config_mk
}
add_android_config_mk ()
{
echo "" >> $config_mk
if [ $TARGET_ARCH = arm ] ; then
echo "TARGET_ARCH := arm" >> $config_mk
fi
if [ $TARGET_ARCH = x86 ] ; then
echo "TARGET_ARCH := x86" >> $config_mk
fi
echo "HOST_PREBUILT_TAG := $HOST_TAG" >> $config_mk
echo "PREBUILT := $ANDROID_PREBUILT" >> $config_mk
echo "PREBUILTS := $ANDROID_PREBUILTS" >> $config_mk
}
# Find pattern $1 in string $2
# This is to be used in if statements as in:
#
# if pattern_match <pattern> <string>; then
# ...
# fi
#
pattern_match ()
{
echo "$2" | grep -q -E -e "$1"
}
# Find if a given shell program is available.
# We need to take care of the fact that the 'which <foo>' command
# may return either an empty string (Linux) or something like
# "no <foo> in ..." (Darwin). Also, we need to redirect stderr
# to /dev/null for Cygwin
#
# $1: variable name
# $2: program name
#
# Result: set $1 to the full path of the corresponding command
# or to the empty/undefined string if not available
#
find_program ()
{
local PROG
PROG=`which $2 2>/dev/null`
if [ -n "$PROG" ] ; then
if pattern_match '^no ' "$PROG"; then
PROG=
fi
fi
eval $1="$PROG"
}