mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-17 02:52:40 +00:00
184 lines
5 KiB
Bash
Executable file
184 lines
5 KiB
Bash
Executable file
#!/bin/sh
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#
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# cosmopolitan c compiler
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#
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# getting started
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#
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# sudo chmod 1777 /opt
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# git clone https://github.com/jart/cosmopolitan /opt/cosmo
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# (cd /opt/cosmo; make -j8 toolchain)
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# sudo ln -sf /opt/cosmo/tool/scripts/cosmocc /usr/local/bin/cosmocc
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# sudo ln -sf /opt/cosmo/tool/scripts/cosmoc++ /usr/local/bin/cosmoc++
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# cosmocc -o hello.com hello.c
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# ./foo.com
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# ./foo.com.dbg
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#
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# building open source projects
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#
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# export CC=cosmocc
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# export CXX=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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# cosmopolitan runtime flags
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#
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# ./hello.com --strace
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# ./hello.com --ftrace
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#
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# cosmpolitan runtime libraries
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#
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# #include <cosmo.h>
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# int main() {
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# ShowCrashReports();
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# __builtin_trap();
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# }
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#
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# building programs in tiny mode
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#
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# export MODE=tiny
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# (cd /opt/cosmo; make -j8 toolchain)
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# cosmocc -Os -o foo.com foo.c
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#
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# hardening programs with memory safety
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#
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# export MODE=asan
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# (cd /opt/cosmo; make -j8 toolchain)
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# cosmocc -o foo.com foo.c
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#
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MODE=${MODE:-$m}
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COSMO=${COSMO:-/opt/cosmo}
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COSMOS=${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-gcc (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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PLATFORM="-D__COSMOPOLITAN__"
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PREDEF="-include libc/integral/normalize.inc"
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CCFLAGS="-fdata-sections -ffunction-sections -fno-pie -mno-tls-direct-seg-refs -mno-red-zone -fportcosmo"
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CFLAGS=
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CPPFLAGS="-DNDEBUG -nostdinc -iquote /opt/cosmo -isystem $COSMOS/include -isystem $COSMO/libc/isystem"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -L$COSMOS/lib -Wl,-T,$COSMO/o/$MODE/ape/public/ape.lds $COSMO/o/$MODE/ape/ape-no-modify-self.o $COSMO/o/$MODE/libc/crt/crt.o"
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LDLIBS="$COSMO/o/$MODE/cosmopolitan.a"
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CC="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-gcc"
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OBJCOPY="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-objcopy"
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FIXUPOBJ="$COSMO/o/$MODE/tool/build/fixupobj.com"
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ZIPCOPY="$COSMO/o/$MODE/tool/build/zipcopy.com"
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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 $COSMOS directory" >&2
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exit 1
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fi
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if [ ! -f "$CC" ] ||
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[ ! -f "$OBJCOPY" ] ||
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[ ! -f "$FIXUPOBJ" ] ||
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[ ! -f "$ZIPCOPY" ]; then
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echo "error: cosmopolitan artifacts missing; please run" >&2
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echo " cd $COSMOS" >&2
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echo " make -j8 m=$MODE toolchain" >&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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FIRST=1
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OUTPUT=
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INTENT=ld
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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"$x" = x"-c" ]; then
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INTENT=cc
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elif [ x"$x" = x"-E" ]; then
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INTENT=cpp
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elif [ x"$x" = x"-o" ]; then
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NEED_OUTPUT=1
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elif [ x"$x" != x"${x#-o}" ]; then
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OUTPUT=${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"$OPT" != x"-Os" ] && [ x"$MODE" != x"tiny" ]; then
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# support --ftrace unless optimizing for size
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CFLAGS="$CFLAGS -fpatchable-function-entry=18,16"
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fi
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if [ $INTENT = cpp ]; then
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set -- $PLATFORM $CCFLAGS $CPPFLAGS "$@"
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elif [ $INTENT = cc ]; then
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set -- $PLATFORM $PREDEF $CCFLAGS $CFLAGS $CPPFLAGS "$@" $FRAME
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else
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set -- $PLATFORM $PREDEF $LDFLAGS $CFLAGS $CPPFLAGS "$@" $LDLIBS -Wl,-z,common-page-size=65536 -Wl,-z,max-page-size=65536 $FRAME
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fi
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set -- "$CC" "$@"
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printf '(cd %s; %s)\n' "$PWD" "$*" >>/tmp/build.log
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"$@" || exit
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if [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
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if [ $INTENT = cc ] || [ $INTENT = ld ]; then
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"$FIXUPOBJ" "$OUTPUT" || exit
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fi
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if [ $INTENT = ld ]; then
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if [ x"$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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"$ZIPCOPY" "$OUTPUT.dbg" "$OUTPUT" || exit
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fi
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fi
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fi
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