mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-03-13 04:16:28 +00:00
22f81a8d50
- Get out of the red zone - Generate --ftrace nops unless -Os is passed - Intercept -o path to generate .com / .com.dbg appropriately
146 lines
4.1 KiB
Bash
Executable file
146 lines
4.1 KiB
Bash
Executable file
#!/bin/sh
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# replacement for c++ command
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#
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# we assume you run the following beforehand
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#
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# sudo chmod 1777 /opt
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# cd /opt
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# git clone https://github.com/jart/cosmopolitan cosmo
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# cd cosmo
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# make -j
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#
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# you can then use it to build open source projects, e.g.
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#
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# export CC=cosmocc
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# export CXX=cosmoc++
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# export LD=cosmoc++
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# ./configure --prefix=/opt/cosmos
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# make -j
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# make install
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#
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COSMO=/opt/cosmo
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COSMOS=/opt/cosmos
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if [ "$1" = "--version" ]; then
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cat <<'EOF'
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x86_64-unknown-cosmo-g++ (GCC) 11.2.0
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Copyright (C) 2019 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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EOF
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exit 0
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fi
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CXX="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-g++"
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OBJCOPY="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-objcopy"
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CCFLAGS="-g -fdata-sections -ffunction-sections -fno-pie -mno-tls-direct-seg-refs -mno-red-zone -fportcosmo -include $COSMO/build/portcosmo.h"
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CXXFLAGS="-fno-exceptions -fuse-cxa-atexit -fno-threadsafe-statics"
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CPPFLAGS="-DNDEBUG -nostdinc -iquote /opt/cosmo -isystem $COSMOS/include -isystem $COSMO/libc/isystem -include libc/integral/normalize.inc"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -L$COSMOS/lib -Wl,-T,$COSMO/o/ape/public/ape.lds $COSMO/o/ape/ape-no-modify-self.o $COSMO/o/libc/crt/crt.o"
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LDLIBS="$COSMO/o/third_party/libcxx/libcxx.a $COSMO/o/cosmopolitan.a"
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if [ ! -d "$COSMO" ]; then
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echo "you need to checkout cosmopolitan to your $COSMO directory" >&2
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exit 1
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fi
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if [ ! -d "$COSMOS" ]; then
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echo "you need to create your $COSMOS directory" >&2
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exit 1
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fi
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# auto-install some shell libraries
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if [ ! -d "$COSMOS/lib" ]; then
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mkdir "$COSMOS/lib"
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for lib in c dl gcc_s m pthread resolv rt z stdc++; do
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printf '\041\074\141\162\143\150\076\012' >"$COSMOS/lib/lib$lib.a"
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done
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fi
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OPT=
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HAS_C=0
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HAS_O=0
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HAS_E=0
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FIRST=1
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OUTPUT=
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NEED_OUTPUT=
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FRAME=-fno-omit-frame-pointer
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for x; do
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if [ $FIRST -eq 1 ]; then
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set --
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FIRST=0
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fi
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if [ x"$x" = x"-Werror" ]; then
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# this toolchain is intended for building other people's code
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# elevating warnings into errors, should only be done by devs
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continue
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elif [ x"$x" = x"-pedantic" ]; then
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# this toolchain is intended for building other people's code
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# we don't need the compiler's assistance to be more portable
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continue
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elif [ x"$x" != x"${x#-O}" ]; then
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OPT=$x
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elif [ x"$x" = x"-c" ]; then
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HAS_C=1
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elif [ x"$x" = x"-E" ]; then
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HAS_E=1
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elif [ x"$x" = x"-o" ]; then
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HAS_O=1
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NEED_OUTPUT=1
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elif [ x"$x" != x"${x#-o}" ]; then
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HAS_O=1
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OUTPUT=${x#-o}
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elif [ -n "$NEED_OUTPUT" ]; then
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NEED_OUTPUT=
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OUTPUT=$x
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elif [ x"$x" = x"-fpic" ]; then
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continue
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elif [ x"$x" = x"-fPIC" ]; then
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continue
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elif [ x"$x" = x"-shared" ]; then
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echo "error: cosmocc -shared isn't supported" >&2
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exit 1
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elif [ x"$x" = x"-fomit-frame-pointer" ] || [ x"$x" = x"-fno-omit-frame-pointer" ]; then
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FRAME=$x
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continue
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fi
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set -- "$@" "$x"
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done
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if [ x"$OPT" != x"-Os" ]; then
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# support --ftrace unless optimizing for size
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CXXFLAGS="$CXXFLAGS -fpatchable-function-entry=18,16"
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fi
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LINKING=
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if [ "$HAS_E" = "1" ]; then
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set -- $CCFLAGS $CPPFLAGS "$@"
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elif [ "$HAS_C" = "1" ]; then
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set -- $CCFLAGS $CXXFLAGS $CPPFLAGS "$@" $FRAME
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else
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LINKING=1
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set -- $LDFLAGS $CXXFLAGS $CPPFLAGS "$@" $LDLIBS -Wl,-z,common-page-size=65536 -Wl,-z,max-page-size=65536 $FRAME
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fi
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set -- "$CXX" "$@"
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printf '(cd %s; %s)\n' "$PWD" "$*" >>/tmp/build.log
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"$@" || exit
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if [ -n "$LINKING" ] && [ x"$OUTPUT" != x"" ]; then
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if [ x"$OUTPUT" != x"${OUTPUT%.com}" ] ||
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[ x"$OUTPUT" != x"${OUTPUT%.exe}" ]; then
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# cosmocc -o foo.com ...
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# -> foo.com (ape)
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# -> foo.com.dbg (elf)
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mv -f "$OUTPUT" "$OUTPUT.dbg" || exit
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"$OBJCOPY" -S -O binary "$OUTPUT.dbg" "$OUTPUT" || exit
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else
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# cosmocc -o foo ...
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# -> foo (elf)
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# -> foo.com (ape)
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# -> foo.com.dbg (elf)
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cp -f "$OUTPUT" "$OUTPUT.com.dbg" || exit
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"$OBJCOPY" -S -O binary "$OUTPUT" "$OUTPUT.com" || exit
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fi
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fi
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