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#!/usr/bin/env bash
#
# Detects OS we're compiling on and outputs a file specified by the first
# argument, which in turn gets read while processing Makefile.
#
# The output will set the following variables:
# CC C Compiler path
# CXX C++ Compiler path
# PLATFORM_LDFLAGS Linker flags
# JAVA_LDFLAGS Linker flags for RocksDBJava
# JAVA_STATIC_LDFLAGS Linker flags for RocksDBJava static build
# PLATFORM_SHARED_EXT Extension for shared libraries
# PLATFORM_SHARED_LDFLAGS Flags for building shared library
# PLATFORM_SHARED_CFLAGS Flags for compiling objects for shared library
# PLATFORM_CCFLAGS C compiler flags
# PLATFORM_CXXFLAGS C++ compiler flags. Will contain:
# PLATFORM_SHARED_VERSIONED Set to 'true' if platform supports versioned
# shared libraries, empty otherwise.
# FIND Command for the find utility
# WATCH Command for the watch utility
#
# The PLATFORM_CCFLAGS and PLATFORM_CXXFLAGS might include the following:
#
# -DROCKSDB_PLATFORM_POSIX if posix-platform based
# -DSNAPPY if the Snappy library is present
# -DLZ4 if the LZ4 library is present
# -DZSTD if the ZSTD library is present
# -DNUMA if the NUMA library is present
# -DTBB if the TBB library is present
#
# Using gflags in rocksdb:
# Our project depends on gflags, which requires users to take some extra steps
# before they can compile the whole repository:
# 1. Install gflags. You may download it from here:
# https://gflags.github.io/gflags/ (Mac users can `brew install gflags`)
# 2. Once installed, add the include path for gflags to your CPATH env var and
# the lib path to LIBRARY_PATH. If installed with default settings, the lib
# will be /usr/local/lib and the include path will be /usr/local/include
OUTPUT=$1
if test -z "$OUTPUT"; then
echo "usage: $0 <output-filename>" >&2
exit 1
fi
# we depend on C++11
PLATFORM_CXXFLAGS="-std=c++11"
# we currently depend on POSIX platform
COMMON_FLAGS="-DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX"
# Default to fbcode gcc on internal fb machines
if [ -z "$ROCKSDB_NO_FBCODE" -a -d /mnt/gvfs/third-party ]; then
FBCODE_BUILD="true"
# If we're compiling with TSAN we need pic build
PIC_BUILD=$COMPILE_WITH_TSAN
if [ -n "$ROCKSDB_FBCODE_BUILD_WITH_481" ]; then
# we need this to build with MySQL. Don't use for other purposes.
source "$PWD/build_tools/fbcode_config4.8.1.sh"
elif [ -n "$ROCKSDB_FBCODE_BUILD_WITH_5xx" ]; then
source "$PWD/build_tools/fbcode_config.sh"
else
source "$PWD/build_tools/fbcode_config_platform007.sh"
fi
fi
# Delete existing output, if it exists
rm -f "$OUTPUT"
touch "$OUTPUT"
if test -z "$CC"; then
if [ -x "$(command -v cc)" ]; then
CC=cc
elif [ -x "$(command -v clang)" ]; then
CC=clang
else
CC=cc
fi
fi
if test -z "$CXX"; then
if [ -x "$(command -v g++)" ]; then
CXX=g++
elif [ -x "$(command -v clang++)" ]; then
CXX=clang++
else
CXX=g++
fi
fi
# Detect OS
if test -z "$TARGET_OS"; then
TARGET_OS=`uname -s`
fi
if test -z "$TARGET_ARCHITECTURE"; then
TARGET_ARCHITECTURE=`uname -m`
fi
if test -z "$CLANG_SCAN_BUILD"; then
CLANG_SCAN_BUILD=scan-build
fi
if test -z "$CLANG_ANALYZER"; then
CLANG_ANALYZER=$(command -v clang++ 2> /dev/null)
fi
if test -z "$FIND"; then
FIND=find
fi
if test -z "$WATCH"; then
WATCH=watch
fi
COMMON_FLAGS="$COMMON_FLAGS ${CFLAGS}"
CROSS_COMPILE=
PLATFORM_CCFLAGS=
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS"
PLATFORM_SHARED_EXT="so"
PLATFORM_SHARED_LDFLAGS="-Wl,--no-as-needed -shared -Wl,-soname -Wl,"
PLATFORM_SHARED_CFLAGS="-fPIC"
PLATFORM_SHARED_VERSIONED=true
# generic port files (working on all platform by #ifdef) go directly in /port
GENERIC_PORT_FILES=`cd "$ROCKSDB_ROOT"; find port -name '*.cc' | tr "\n" " "`
# On GCC, we pick libc's memcmp over GCC's memcmp via -fno-builtin-memcmp
case "$TARGET_OS" in
Darwin)
PLATFORM=OS_MACOSX
COMMON_FLAGS="$COMMON_FLAGS -DOS_MACOSX"
PLATFORM_SHARED_EXT=dylib
PLATFORM_SHARED_LDFLAGS="-dynamiclib -install_name "
# PORT_FILES=port/darwin/darwin_specific.cc
;;
IOS)
PLATFORM=IOS
COMMON_FLAGS="$COMMON_FLAGS -DOS_MACOSX -DIOS_CROSS_COMPILE -DROCKSDB_LITE"
PLATFORM_SHARED_EXT=dylib
PLATFORM_SHARED_LDFLAGS="-dynamiclib -install_name "
CROSS_COMPILE=true
PLATFORM_SHARED_VERSIONED=
;;
Linux)
PLATFORM=OS_LINUX
COMMON_FLAGS="$COMMON_FLAGS -DOS_LINUX"
if [ -z "$USE_CLANG" ]; then
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp"
else
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -latomic"
fi
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lpthread -lrt"
if test -z "$USE_FOLLY_DISTRIBUTED_MUTEX"; then
USE_FOLLY_DISTRIBUTED_MUTEX=1
fi
# PORT_FILES=port/linux/linux_specific.cc
;;
SunOS)
PLATFORM=OS_SOLARIS
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_SOLARIS -m64"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lpthread -lrt -static-libstdc++ -static-libgcc -m64"
# PORT_FILES=port/sunos/sunos_specific.cc
;;
AIX)
PLATFORM=OS_AIX
CC=gcc
COMMON_FLAGS="$COMMON_FLAGS -maix64 -pthread -fno-builtin-memcmp -D_REENTRANT -DOS_AIX -D__STDC_FORMAT_MACROS"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -pthread -lpthread -lrt -maix64 -static-libstdc++ -static-libgcc"
# PORT_FILES=port/aix/aix_specific.cc
;;
FreeBSD)
PLATFORM=OS_FREEBSD
CXX=clang++
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_FREEBSD"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lpthread"
# PORT_FILES=port/freebsd/freebsd_specific.cc
;;
NetBSD)
PLATFORM=OS_NETBSD
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_NETBSD"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lpthread -lgcc_s"
# PORT_FILES=port/netbsd/netbsd_specific.cc
;;
OpenBSD)
PLATFORM=OS_OPENBSD
CXX=clang++
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_OPENBSD"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -pthread"
# PORT_FILES=port/openbsd/openbsd_specific.cc
FIND=gfind
WATCH=gnuwatch
;;
DragonFly)
PLATFORM=OS_DRAGONFLYBSD
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_DRAGONFLYBSD"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lpthread"
# PORT_FILES=port/dragonfly/dragonfly_specific.cc
;;
Cygwin)
PLATFORM=CYGWIN
PLATFORM_SHARED_CFLAGS=""
PLATFORM_CXXFLAGS="-std=gnu++11"
COMMON_FLAGS="$COMMON_FLAGS -DCYGWIN"
if [ -z "$USE_CLANG" ]; then
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp"
else
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -latomic"
fi
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lpthread -lrt"
# PORT_FILES=port/linux/linux_specific.cc
;;
OS_ANDROID_CROSSCOMPILE)
PLATFORM=OS_ANDROID
COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_ANDROID -DROCKSDB_PLATFORM_POSIX"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS " # All pthread features are in the Android C library
# PORT_FILES=port/android/android.cc
CROSS_COMPILE=true
;;
*)
echo "Unknown platform!" >&2
exit 1
esac
PLATFORM_CXXFLAGS="$PLATFORM_CXXFLAGS ${CXXFLAGS}"
JAVA_LDFLAGS="$PLATFORM_LDFLAGS"
JAVA_STATIC_LDFLAGS="$PLATFORM_LDFLAGS"
if [ "$CROSS_COMPILE" = "true" -o "$FBCODE_BUILD" = "true" ]; then
# Cross-compiling; do not try any compilation tests.
# Also don't need any compilation tests if compiling on fbcode
true
else
if ! test $ROCKSDB_DISABLE_FALLOCATE; then
# Test whether fallocate is available
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <fcntl.h>
#include <linux/falloc.h>
int main() {
int fd = open("/dev/null", 0);
fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, 1024);
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_FALLOCATE_PRESENT"
fi
fi
if ! test $ROCKSDB_DISABLE_SNAPPY; then
# Test whether Snappy library is installed
# http://code.google.com/p/snappy/
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <snappy.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DSNAPPY"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lsnappy"
JAVA_LDFLAGS="$JAVA_LDFLAGS -lsnappy"
fi
fi
if ! test $ROCKSDB_DISABLE_GFLAGS; then
# Test whether gflags library is installed
# http://gflags.github.io/gflags/
# check if the namespace is gflags
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null << EOF
#include <gflags/gflags.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DGFLAGS=1"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lgflags"
else
# check if namespace is google
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null << EOF
#include <gflags/gflags.h>
using namespace google;
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DGFLAGS=google"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lgflags"
fi
fi
fi
if ! test $ROCKSDB_DISABLE_ZLIB; then
# Test whether zlib library is installed
$CXX $CFLAGS $COMMON_FLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <zlib.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DZLIB"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lz"
JAVA_LDFLAGS="$JAVA_LDFLAGS -lz"
fi
fi
if ! test $ROCKSDB_DISABLE_BZIP; then
# Test whether bzip library is installed
$CXX $CFLAGS $COMMON_FLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <bzlib.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DBZIP2"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lbz2"
JAVA_LDFLAGS="$JAVA_LDFLAGS -lbz2"
fi
fi
if ! test $ROCKSDB_DISABLE_LZ4; then
# Test whether lz4 library is installed
$CXX $CFLAGS $COMMON_FLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <lz4.h>
#include <lz4hc.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DLZ4"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -llz4"
JAVA_LDFLAGS="$JAVA_LDFLAGS -llz4"
fi
fi
if ! test $ROCKSDB_DISABLE_ZSTD; then
# Test whether zstd library is installed
$CXX $CFLAGS $COMMON_FLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <zstd.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DZSTD"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lzstd"
JAVA_LDFLAGS="$JAVA_LDFLAGS -lzstd"
fi
fi
if ! test $ROCKSDB_DISABLE_NUMA; then
# Test whether numa is available
$CXX $CFLAGS -x c++ - -o /dev/null -lnuma 2>/dev/null <<EOF
#include <numa.h>
#include <numaif.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DNUMA"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lnuma"
JAVA_LDFLAGS="$JAVA_LDFLAGS -lnuma"
fi
fi
if ! test $ROCKSDB_DISABLE_TBB; then
# Test whether tbb is available
$CXX $CFLAGS $LDFLAGS -x c++ - -o /dev/null -ltbb 2>/dev/null <<EOF
#include <tbb/tbb.h>
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DTBB"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -ltbb"
JAVA_LDFLAGS="$JAVA_LDFLAGS -ltbb"
fi
fi
if ! test $ROCKSDB_DISABLE_JEMALLOC; then
# Test whether jemalloc is available
if echo 'int main() {}' | $CXX $CFLAGS -x c++ - -o /dev/null -ljemalloc \
2>/dev/null; then
# This will enable some preprocessor identifiers in the Makefile
JEMALLOC=1
# JEMALLOC can be enabled either using the flag (like here) or by
# providing direct link to the jemalloc library
WITH_JEMALLOC_FLAG=1
# check for JEMALLOC installed with HomeBrew
if [ "$PLATFORM" == "OS_MACOSX" ]; then
if hash brew 2>/dev/null && brew ls --versions jemalloc > /dev/null; then
JEMALLOC_VER=$(brew ls --versions jemalloc | tail -n 1 | cut -f 2 -d ' ')
JEMALLOC_INCLUDE="-I/usr/local/Cellar/jemalloc/${JEMALLOC_VER}/include"
JEMALLOC_LIB="/usr/local/Cellar/jemalloc/${JEMALLOC_VER}/lib/libjemalloc_pic.a"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS $JEMALLOC_LIB"
JAVA_STATIC_LDFLAGS="$JAVA_STATIC_LDFLAGS $JEMALLOC_LIB"
fi
fi
fi
fi
if ! test $JEMALLOC && ! test $ROCKSDB_DISABLE_TCMALLOC; then
# jemalloc is not available. Let's try tcmalloc
if echo 'int main() {}' | $CXX $CFLAGS -x c++ - -o /dev/null \
-ltcmalloc 2>/dev/null; then
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -ltcmalloc"
JAVA_LDFLAGS="$JAVA_LDFLAGS -ltcmalloc"
fi
fi
if ! test $ROCKSDB_DISABLE_MALLOC_USABLE_SIZE; then
# Test whether malloc_usable_size is available
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <malloc.h>
int main() {
size_t res = malloc_usable_size(0);
(void)res;
return 0;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_MALLOC_USABLE_SIZE"
fi
fi
if ! test $ROCKSDB_DISABLE_PTHREAD_MUTEX_ADAPTIVE_NP; then
# Test whether PTHREAD_MUTEX_ADAPTIVE_NP mutex type is available
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <pthread.h>
int main() {
int x = PTHREAD_MUTEX_ADAPTIVE_NP;
(void)x;
return 0;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_PTHREAD_ADAPTIVE_MUTEX"
fi
fi
if ! test $ROCKSDB_DISABLE_BACKTRACE; then
# Test whether backtrace is available
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <execinfo.h>
int main() {
void* frames[1];
backtrace_symbols(frames, backtrace(frames, 1));
return 0;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_BACKTRACE"
else
# Test whether execinfo library is installed
$CXX $CFLAGS -lexecinfo -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <execinfo.h>
int main() {
void* frames[1];
backtrace_symbols(frames, backtrace(frames, 1));
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_BACKTRACE"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -lexecinfo"
JAVA_LDFLAGS="$JAVA_LDFLAGS -lexecinfo"
fi
fi
fi
if ! test $ROCKSDB_DISABLE_PG; then
# Test if -pg is supported
$CXX $CFLAGS -pg -x c++ - -o /dev/null 2>/dev/null <<EOF
int main() {
return 0;
}
EOF
if [ "$?" = 0 ]; then
PROFILING_FLAGS=-pg
fi
fi
if ! test $ROCKSDB_DISABLE_SYNC_FILE_RANGE; then
# Test whether sync_file_range is supported for compatibility with an old glibc
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <fcntl.h>
int main() {
int fd = open("/dev/null", 0);
sync_file_range(fd, 0, 1024, SYNC_FILE_RANGE_WRITE);
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_RANGESYNC_PRESENT"
fi
fi
if ! test $ROCKSDB_DISABLE_SCHED_GETCPU; then
# Test whether sched_getcpu is supported
$CXX $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <sched.h>
int main() {
int cpuid = sched_getcpu();
(void)cpuid;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_SCHED_GETCPU_PRESENT"
fi
fi
if ! test $ROCKSDB_DISABLE_ALIGNED_NEW; then
# Test whether c++17 aligned-new is supported
$CXX $PLATFORM_CXXFLAGS -faligned-new -x c++ - -o /dev/null 2>/dev/null <<EOF
struct alignas(1024) t {int a;};
int main() {}
EOF
if [ "$?" = 0 ]; then
PLATFORM_CXXFLAGS="$PLATFORM_CXXFLAGS -faligned-new -DHAVE_ALIGNED_NEW"
fi
fi
fi
# TODO(tec): Fix -Wshorten-64-to-32 errors on FreeBSD and enable the warning.
# -Wshorten-64-to-32 breaks compilation on FreeBSD i386
if ! [ "$TARGET_OS" = FreeBSD -a "$TARGET_ARCHITECTURE" = i386 ]; then
# Test whether -Wshorten-64-to-32 is available
$CXX $CFLAGS -x c++ - -o /dev/null -Wshorten-64-to-32 2>/dev/null <<EOF
int main() {}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -Wshorten-64-to-32"
fi
fi
# shall we use HDFS?
if test "$USE_HDFS"; then
if test -z "$JAVA_HOME"; then
echo "JAVA_HOME has to be set for HDFS usage." >&2
exit 1
fi
HDFS_CCFLAGS="$HDFS_CCFLAGS -I$JAVA_HOME/include -I$JAVA_HOME/include/linux -DUSE_HDFS -I$HADOOP_HOME/include"
HDFS_LDFLAGS="$HDFS_LDFLAGS -lhdfs -L$JAVA_HOME/jre/lib/amd64 -L$HADOOP_HOME/lib/native"
HDFS_LDFLAGS="$HDFS_LDFLAGS -L$JAVA_HOME/jre/lib/amd64/server -L$GLIBC_RUNTIME_PATH/lib"
HDFS_LDFLAGS="$HDFS_LDFLAGS -ldl -lverify -ljava -ljvm"
COMMON_FLAGS="$COMMON_FLAGS $HDFS_CCFLAGS"
PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS $HDFS_LDFLAGS"
JAVA_LDFLAGS="$JAVA_LDFLAGS $HDFS_LDFLAGS"
fi
if test "0$PORTABLE" -eq 0; then
if test -n "`echo $TARGET_ARCHITECTURE | grep ^ppc64`"; then
# Tune for this POWER processor, treating '+' models as base models
POWER=`LD_SHOW_AUXV=1 /bin/true | grep AT_PLATFORM | grep -E -o power[0-9]+`
COMMON_FLAGS="$COMMON_FLAGS -mcpu=$POWER -mtune=$POWER "
elif test -n "`echo $TARGET_ARCHITECTURE | grep ^s390x`"; then
COMMON_FLAGS="$COMMON_FLAGS -march=z10 "
elif test -n "`echo $TARGET_ARCHITECTURE | grep -e^arm -e^aarch64`"; then
# TODO: Handle this with approprite options.
COMMON_FLAGS="$COMMON_FLAGS"
elif test -n "`echo $TARGET_ARCHITECTURE | grep ^aarch64`"; then
COMMON_FLAGS="$COMMON_FLAGS"
elif [ "$TARGET_OS" == "IOS" ]; then
COMMON_FLAGS="$COMMON_FLAGS"
elif [ "$TARGET_OS" == "AIX" ] || [ "$TARGET_OS" == "SunOS" ]; then
# TODO: Not sure why we don't use -march=native on these OSes
if test "$USE_SSE"; then
TRY_SSE_ETC="1"
fi
else
COMMON_FLAGS="$COMMON_FLAGS -march=native "
fi
else
# PORTABLE=1
if test "$USE_SSE"; then
TRY_SSE_ETC="1"
fi
fi
if test "$TRY_SSE_ETC"; then
# The USE_SSE flag now means "attempt to compile with widely-available
# Intel architecture extensions utilized by specific optimizations in the
# source code." It's a qualifier on PORTABLE=1 that means "mostly portable."
# It doesn't even really check that your current CPU is compatible.
#
# SSE4.2 available since nehalem, ca. 2008-2010
TRY_SSE42="-msse4.2"
# PCLMUL available since westmere, ca. 2010-2011
TRY_PCLMUL="-mpclmul"
fi
$CXX $PLATFORM_CXXFLAGS $COMMON_FLAGS $TRY_SSE42 -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <cstdint>
#include <nmmintrin.h>
int main() {
volatile uint32_t x = _mm_crc32_u32(0, 0);
(void)x;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS $TRY_SSE42 -DHAVE_SSE42"
elif test "$USE_SSE"; then
echo "warning: USE_SSE specified but compiler could not use SSE intrinsics, disabling" >&2
fi
$CXX $PLATFORM_CXXFLAGS $COMMON_FLAGS $TRY_PCLMUL -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <cstdint>
#include <wmmintrin.h>
int main() {
const auto a = _mm_set_epi64x(0, 0);
const auto b = _mm_set_epi64x(0, 0);
const auto c = _mm_clmulepi64_si128(a, b, 0x00);
auto d = _mm_cvtsi128_si64(c);
(void)d;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS $TRY_PCLMUL -DHAVE_PCLMUL"
elif test "$USE_SSE"; then
echo "warning: USE_SSE specified but compiler could not use PCLMUL intrinsics, disabling" >&2
fi
$CXX $PLATFORM_CXXFLAGS $COMMON_FLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#include <cstdint>
int main() {
uint64_t a = 0xffffFFFFffffFFFF;
__uint128_t b = __uint128_t(a) * a;
a = static_cast<uint64_t>(b >> 64);
(void)a;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DHAVE_UINT128_EXTENSION"
fi
# iOS doesn't support thread-local storage, but this check would erroneously
# succeed because the cross-compiler flags are added by the Makefile, not this
# script.
if [ "$PLATFORM" != IOS ]; then
$CXX $COMMON_FLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
#if defined(_MSC_VER) && !defined(__thread)
#define __thread __declspec(thread)
#endif
int main() {
static __thread int tls;
(void)tls;
}
EOF
if [ "$?" = 0 ]; then
COMMON_FLAGS="$COMMON_FLAGS -DROCKSDB_SUPPORT_THREAD_LOCAL"
fi
fi
if [ "$FBCODE_BUILD" != "true" -a "$PLATFORM" = OS_LINUX ]; then
$CXX $COMMON_FLAGS $PLATFORM_SHARED_CFLAGS -x c++ -c - -o test_dl.o 2>/dev/null <<EOF
void dummy_func() {}
EOF
if [ "$?" = 0 ]; then
$CXX $COMMON_FLAGS $PLATFORM_SHARED_LDFLAGS test_dl.o -o /dev/null 2>/dev/null
if [ "$?" = 0 ]; then
EXEC_LDFLAGS+="-ldl"
rm -f test_dl.o
fi
fi
fi
PLATFORM_CCFLAGS="$PLATFORM_CCFLAGS $COMMON_FLAGS"
PLATFORM_CXXFLAGS="$PLATFORM_CXXFLAGS $COMMON_FLAGS"
VALGRIND_VER="$VALGRIND_VER"
ROCKSDB_MAJOR=`build_tools/version.sh major`
ROCKSDB_MINOR=`build_tools/version.sh minor`
ROCKSDB_PATCH=`build_tools/version.sh patch`
echo "CC=$CC" >> "$OUTPUT"
echo "CXX=$CXX" >> "$OUTPUT"
echo "PLATFORM=$PLATFORM" >> "$OUTPUT"
echo "PLATFORM_LDFLAGS=$PLATFORM_LDFLAGS" >> "$OUTPUT"
echo "JAVA_LDFLAGS=$JAVA_LDFLAGS" >> "$OUTPUT"
echo "JAVA_STATIC_LDFLAGS=$JAVA_STATIC_LDFLAGS" >> "$OUTPUT"
echo "VALGRIND_VER=$VALGRIND_VER" >> "$OUTPUT"
echo "PLATFORM_CCFLAGS=$PLATFORM_CCFLAGS" >> "$OUTPUT"
echo "PLATFORM_CXXFLAGS=$PLATFORM_CXXFLAGS" >> "$OUTPUT"
echo "PLATFORM_SHARED_CFLAGS=$PLATFORM_SHARED_CFLAGS" >> "$OUTPUT"
echo "PLATFORM_SHARED_EXT=$PLATFORM_SHARED_EXT" >> "$OUTPUT"
echo "PLATFORM_SHARED_LDFLAGS=$PLATFORM_SHARED_LDFLAGS" >> "$OUTPUT"
echo "PLATFORM_SHARED_VERSIONED=$PLATFORM_SHARED_VERSIONED" >> "$OUTPUT"
echo "EXEC_LDFLAGS=$EXEC_LDFLAGS" >> "$OUTPUT"
echo "JEMALLOC_INCLUDE=$JEMALLOC_INCLUDE" >> "$OUTPUT"
echo "JEMALLOC_LIB=$JEMALLOC_LIB" >> "$OUTPUT"
echo "ROCKSDB_MAJOR=$ROCKSDB_MAJOR" >> "$OUTPUT"
echo "ROCKSDB_MINOR=$ROCKSDB_MINOR" >> "$OUTPUT"
echo "ROCKSDB_PATCH=$ROCKSDB_PATCH" >> "$OUTPUT"
echo "CLANG_SCAN_BUILD=$CLANG_SCAN_BUILD" >> "$OUTPUT"
echo "CLANG_ANALYZER=$CLANG_ANALYZER" >> "$OUTPUT"
echo "PROFILING_FLAGS=$PROFILING_FLAGS" >> "$OUTPUT"
echo "FIND=$FIND" >> "$OUTPUT"
echo "WATCH=$WATCH" >> "$OUTPUT"
# This will enable some related identifiers for the preprocessor
if test -n "$JEMALLOC"; then
echo "JEMALLOC=1" >> "$OUTPUT"
fi
# Indicates that jemalloc should be enabled using -ljemalloc flag
# The alternative is to porvide a direct link to the library via JEMALLOC_LIB
# and JEMALLOC_INCLUDE
if test -n "$WITH_JEMALLOC_FLAG"; then
echo "WITH_JEMALLOC_FLAG=$WITH_JEMALLOC_FLAG" >> "$OUTPUT"
fi
echo "LUA_PATH=$LUA_PATH" >> "$OUTPUT"
if test -n "$USE_FOLLY_DISTRIBUTED_MUTEX"; then
echo "USE_FOLLY_DISTRIBUTED_MUTEX=$USE_FOLLY_DISTRIBUTED_MUTEX" >> "$OUTPUT"
fi
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