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#!/bin/bash
# Builds protoc executable into target/protoc.exe; optionally build protoc
# plugins into target/protoc-gen-*.exe
# To be run from Maven.
# Usage: build-protoc.sh <OS> <ARCH> <TARGET>
# <OS> and <ARCH> are ${os.detected.name} and ${os.detected.arch} from os-maven-plugin
# <TARGET> can be "protoc" or "protoc-gen-javalite"
#
# The script now supports cross-compiling windows and linux-arm64 in linux-x86
# environment. Required packages:
# - Windows: i686-w64-mingw32-gcc (32bit) and x86_64-w64-mingw32-gcc (64bit)
# - Arm64: g++-aarch64-linux-gnu
OS=$1
ARCH=$2
MAKE_TARGET=$3
if [[ $# < 3 ]]; then
echo "No arguments provided. This script is intended to be run from Maven."
exit 1
fi
case $MAKE_TARGET in
protoc-gen-javalite)
;;
protoc)
;;
*)
echo "Target ""$TARGET"" invalid."
exit 1
esac
# Under Cygwin, bash doesn't have these in PATH when called from Maven which
# runs in Windows version of Java.
export PATH="/bin:/usr/bin:$PATH"
############################################################################
# Helper functions
############################################################################
E_PARAM_ERR=98
E_ASSERT_FAILED=99
# Usage:
fail()
{
echo "ERROR: $1"
echo
exit $E_ASSERT_FAILED
}
# Usage: assertEq VAL1 VAL2 $LINENO
assertEq ()
{
lineno=$3
if [ -z "$lineno" ]; then
echo "lineno not given"
exit $E_PARAM_ERR
fi
if [[ "$1" != "$2" ]]; then
echo "Assertion failed: \"$1\" == \"$2\""
echo "File \"$0\", line $lineno" # Give name of file and line number.
exit $E_ASSERT_FAILED
fi
}
# Checks the artifact is for the expected architecture
# Usage: checkArch <path-to-protoc>
checkArch ()
{
echo
echo "Checking file format ..."
if [[ "$OS" == windows || "$OS" == linux ]]; then
format="$(objdump -f "$1" | grep -o "file format .*$" | grep -o "[^ ]*$")"
echo Format=$format
if [[ "$OS" == linux ]]; then
if [[ "$ARCH" == x86_32 ]]; then
assertEq $format "elf32-i386" $LINENO
elif [[ "$ARCH" == x86_64 ]]; then
assertEq $format "elf64-x86-64" $LINENO
elif [[ "$ARCH" == aarch_64 ]]; then
assertEq $format "elf64-little" $LINENO
elif [[ "$ARCH" == ppcle_64 ]]; then
assertEq $format "elf64-powerpcle" $LINENO
else
fail "Unsupported arch: $ARCH"
fi
else
# $OS == windows
if [[ "$ARCH" == x86_32 ]]; then
assertEq $format "pei-i386" $LINENO
elif [[ "$ARCH" == x86_64 ]]; then
assertEq $format "pei-x86-64" $LINENO
else
fail "Unsupported arch: $ARCH"
fi
fi
elif [[ "$OS" == osx ]]; then
format="$(file -b "$1" | grep -o "[^ ]*$")"
echo Format=$format
if [[ "$ARCH" == x86_32 ]]; then
assertEq $format "i386" $LINENO
elif [[ "$ARCH" == x86_64 ]]; then
assertEq $format "x86_64" $LINENO
else
fail "Unsupported arch: $ARCH"
fi
else
fail "Unsupported system: $OS"
fi
echo
}
# Checks the dependencies of the artifact. Artifacts should only depend on
# system libraries.
# Usage: checkDependencies <path-to-protoc>
checkDependencies ()
{
if [[ "$OS" == windows ]]; then
dump_cmd='objdump -x '"$1"' | fgrep "DLL Name"'
white_list="KERNEL32\.dll\|msvcrt\.dll"
elif [[ "$OS" == linux ]]; then
dump_cmd='ldd '"$1"
if [[ "$ARCH" == x86_32 ]]; then
white_list="linux-gate\.so\.1\|libpthread\.so\.0\|libm\.so\.6\|libc\.so\.6\|ld-linux\.so\.2"
elif [[ "$ARCH" == x86_64 ]]; then
white_list="linux-vdso\.so\.1\|libpthread\.so\.0\|libm\.so\.6\|libc\.so\.6\|ld-linux-x86-64\.so\.2"
elif [[ "$ARCH" == ppcle_64 ]]; then
white_list="linux-vdso64\.so\.1\|libpthread\.so\.0\|libm\.so\.6\|libc\.so\.6\|libz\.so\.1\|ld64\.so\.2"
elif [[ "$ARCH" == aarch_64 ]]; then
dump_cmd='objdump -p '"$1"' | grep NEEDED'
white_list="libpthread\.so\.0\|libc\.so\.6\|ld-linux-aarch64\.so\.1"
fi
elif [[ "$OS" == osx ]]; then
dump_cmd='otool -L '"$1"' | fgrep dylib'
white_list="libz\.1\.dylib\|libstdc++\.6\.dylib\|libSystem\.B\.dylib"
fi
if [[ -z "$white_list" || -z "$dump_cmd" ]]; then
fail "Unsupported platform $OS-$ARCH."
fi
echo "Checking for expected dependencies ..."
eval $dump_cmd | grep -i "$white_list" || fail "doesn't show any expected dependencies"
echo "Checking for unexpected dependencies ..."
eval $dump_cmd | grep -i -v "$white_list"
ret=$?
if [[ $ret == 0 ]]; then
fail "found unexpected dependencies (listed above)."
elif [[ $ret != 1 ]]; then
fail "Error when checking dependencies."
fi # grep returns 1 when "not found", which is what we expect
echo "Dependencies look good."
echo
}
############################################################################
echo "Building protoc, OS=$OS ARCH=$ARCH TARGET=$TARGET"
# Nested double quotes are unintuitive, but it works.
cd "$(dirname "$0")"
WORKING_DIR=$(pwd)
CONFIGURE_ARGS="--disable-shared"
TARGET_FILE=target/$MAKE_TARGET.exe
if [[ "$OS" == windows ]]; then
MAKE_TARGET="${MAKE_TARGET}.exe"
fi
# Override the default value set in configure.ac that has '-g' which produces
# huge binary.
CXXFLAGS="-DNDEBUG"
LDFLAGS=""
if [[ "$(uname)" == CYGWIN* ]]; then
assertEq "$OS" windows $LINENO
# Use mingw32 compilers because executables produced by Cygwin compiler
# always have dependency on Cygwin DLL.
if [[ "$ARCH" == x86_64 ]]; then
CONFIGURE_ARGS="$CONFIGURE_ARGS --host=x86_64-w64-mingw32"
elif [[ "$ARCH" == x86_32 ]]; then
CONFIGURE_ARGS="$CONFIGURE_ARGS --host=i686-pc-mingw32"
else
fail "Unsupported arch by CYGWIN: $ARCH"
fi
elif [[ "$(uname)" == MINGW32* ]]; then
assertEq "$OS" windows $LINENO
assertEq "$ARCH" x86_32 $LINENO
elif [[ "$(uname)" == MINGW64* ]]; then
assertEq "$OS" windows $LINENO
assertEq "$ARCH" x86_64 $LINENO
elif [[ "$(uname)" == Linux* ]]; then
if [[ "$OS" == linux ]]; then
if [[ "$ARCH" == x86_64 ]]; then
CXXFLAGS="$CXXFLAGS -m64"
elif [[ "$ARCH" == x86_32 ]]; then
CXXFLAGS="$CXXFLAGS -m32"
elif [[ "$ARCH" == aarch_64 ]]; then
CONFIGURE_ARGS="$CONFIGURE_ARGS --host=aarch64-linux-gnu"
elif [[ "$ARCH" == ppcle_64 ]]; then
CXXFLAGS="$CXXFLAGS -m64"
else
fail "Unsupported arch: $ARCH"
fi
elif [[ "$OS" == windows ]]; then
# Cross-compilation for Windows
CONFIGURE_ARGS="$CONFIGURE_ARGS"
if [[ "$ARCH" == x86_64 ]]; then
CONFIGURE_ARGS="$CONFIGURE_ARGS --host=x86_64-w64-mingw32"
elif [[ "$ARCH" == x86_32 ]]; then
CONFIGURE_ARGS="$CONFIGURE_ARGS --host=i686-w64-mingw32"
else
fail "Unsupported arch: $ARCH"
fi
else
fail "Cannot build $OS on $(uname)"
fi
elif [[ "$(uname)" == Darwin* ]]; then
assertEq "$OS" osx $LINENO
# Make the binary compatible with OSX 10.7 and later
CXXFLAGS="$CXXFLAGS -mmacosx-version-min=10.7"
if [[ "$ARCH" == x86_64 ]]; then
CXXFLAGS="$CXXFLAGS -m64"
elif [[ "$ARCH" == x86_32 ]]; then
CXXFLAGS="$CXXFLAGS -m32"
else
fail "Unsupported arch: $ARCH"
fi
else
fail "Unsupported system: $(uname)"
fi
# Statically link libgcc and libstdc++.
# -s to produce stripped binary.
if [[ "$OS" == windows ]]; then
# Also static link libpthread required by mingw64
LDFLAGS="$LDFLAGS -static-libgcc -static-libstdc++ -Wl,-Bstatic -lstdc++ -lpthread -s"
elif [[ "$OS" != osx ]]; then
# And they don't work under Mac.
LDFLAGS="$LDFLAGS -static-libgcc -static-libstdc++ -s"
fi
export CXXFLAGS LDFLAGS
cd "$WORKING_DIR"/.. && ./configure $CONFIGURE_ARGS &&
cd src && make clean && make $MAKE_TARGET &&
cd "$WORKING_DIR" && mkdir -p target &&
cp ../src/$MAKE_TARGET $TARGET_FILE ||
exit 1
if [[ "$OS" == osx ]]; then
# Since Mac linker doesn't accept "-s", we need to run strip
strip $TARGET_FILE || exit 1
fi
checkArch $TARGET_FILE && checkDependencies $TARGET_FILE
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