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74 rindas
2.2 KiB
74 rindas
2.2 KiB
#!/bin/sh
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# Detects OS we're compiling on and generates build_config.mk,
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# which in turn gets read while processing Makefile.
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# build_config.mk will set the following variables:
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# - PORT_CFLAGS will either set:
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# -DLEVELDB_PLATFORM_POSIX if cstatomic is present
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# -DLEVELDB_PLATFORM_NOATOMIC if it is not
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# - PLATFORM_CFLAGS with compiler flags for the platform
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# - PLATFORM_LDFLAGS with linker flags for the platform
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# Delete existing build_config.mk
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rm -f build_config.mk
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# Detect OS
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case `uname -s` in
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Darwin)
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PLATFORM=OS_MACOSX
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echo "PLATFORM_CFLAGS=-DOS_MACOSX" >> build_config.mk
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echo "PLATFORM_LDFLAGS=" >> build_config.mk
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;;
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Linux)
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PLATFORM=OS_LINUX
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echo "PLATFORM_CFLAGS=-pthread -DOS_LINUX" >> build_config.mk
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echo "PLATFORM_LDFLAGS=-lpthread" >> build_config.mk
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;;
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SunOS)
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PLATFORM=OS_SOLARIS
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echo "PLATFORM_CFLAGS=-D_REENTRANT -DOS_SOLARIS" >> build_config.mk
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echo "PLATFORM_LDFLAGS=-lpthread -lrt" >> build_config.mk
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;;
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FreeBSD)
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PLATFORM=OS_FREEBSD
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echo "PLATFORM_CFLAGS=-D_REENTRANT -DOS_FREEBSD" >> build_config.mk
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echo "PLATFORM_LDFLAGS=-lpthread" >> build_config.mk
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;;
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*)
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echo "Unknown platform!"
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exit 1
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esac
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echo "PLATFORM=$PLATFORM" >> build_config.mk
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# On GCC, use libc's memcmp, not GCC's memcmp
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PORT_CFLAGS="-fno-builtin-memcmp"
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# Detect C++0x -- this determines whether we'll use port_noatomic.h
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# or port_posix.h by:
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# 1. Rrying to compile with -std=c++0x and including <cstdatomic>.
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# 2. If g++ returns error code, we know to use port_posix.h
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g++ $CFLAGS -std=c++0x -x c++ - -o /dev/null 2>/dev/null <<EOF
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#include <cstdatomic>
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int main() {}
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EOF
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if [ "$?" = 0 ]; then
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PORT_CFLAGS="$PORT_CFLAGS -DLEVELDB_PLATFORM_POSIX -DLEVELDB_CSTDATOMIC_PRESENT -std=c++0x"
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else
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PORT_CFLAGS="$PORT_CFLAGS -DLEVELDB_PLATFORM_POSIX"
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fi
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# Test whether Snappy library is installed
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# http://code.google.com/p/snappy/
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g++ $CFLAGS -x c++ - -o /dev/null 2>/dev/null <<EOF
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#include <snappy.h>
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int main() {}
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EOF
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if [ "$?" = 0 ]; then
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echo "SNAPPY=1" >> build_config.mk
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else
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echo "SNAPPY=0" >> build_config.mk
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fi
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echo "PORT_CFLAGS=$PORT_CFLAGS" >> build_config.mk
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