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Redesign cosmocc toolchain
The `cosmocc` compiler is now being distributed as a self-contained toolchain that's path-agnostic and it no longer requires you clone the Cosmop repo to use it. The bin/ folder has been deleted from the mono repo. The `fatcosmocc` command has been renamed to `cosmocc`. MacOS support now works very well.
This commit is contained in:
Justine Tunney
parent
3802428026
commit
291103ad8d
71 changed files with 2437 additions and 1398 deletions
238
tool/cosmocc/bin/cosmocross
Executable file
238
tool/cosmocc/bin/cosmocross
Executable file
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@ -0,0 +1,238 @@
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#!/bin/sh
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# cosmopolitan c/c++ cross compiler
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# https://github.com/jart/cosmopolitan
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# https://cosmo.zip/
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BIN=${0%/*}
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PROG=${0##*/}
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GCC_VERSION=11.2.0
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if [ "$1" = "--version" ]; then
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cat <<EOF
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$PROG (GCC) $GCC_VERSION
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Copyright (c) 2023 Justine Alexandra Roberts Tunney
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Cosmopolitan Libc and LLVM libcxx/compiler-rt are subject to non-GPL
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notice licenses, e.g. ISC, MIT, etc. Your compiled programs must embed
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our copyright notices. This toolchain is configured to do so default.
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Cosmopolitan comes with absolutely NO WARRANTY of any kind.
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For more information, see the Cosmopolitan LICENSE files.
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Copyright (C) 2019 Free Software Foundation, Inc.
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This launches GNU GCC/Binutils subprocesses, which is free software; see
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Cosmopolitan's third_party/gcc/ for source code and copying conditions.
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There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE.
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EOF
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exit
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fi
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if [ "$1" = "--help" ]; then
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if [ -t 1 ]; then
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exec less "$BIN/../README.md"
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else
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exec cat "$BIN/../README.md"
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fi
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fi
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fatal_error() {
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echo "$PROG: fatal error: $1" >&2
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echo "compilation terminated." >&2
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exit 1
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}
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log_command() {
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if [ -n "$BUILDLOG" ]; then
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printf '# %s\n(cd %s; %s)\n' "$ORIGINAL" "$PWD" "$*" >>"$BUILDLOG"
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fi
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}
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ORIGINAL="$0 $*"
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PLATFORM="-D__COSMOPOLITAN__ -D__COSMOCC__"
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PREDEF="-include libc/integral/normalize.inc"
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CFLAGS="-fportcosmo -fno-dwarf2-cfi-asm -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-semantic-interposition"
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CPPFLAGS="-fno-pie -nostdinc -fno-math-errno -isystem $BIN/../include"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd"
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APEFLAGS="-Wl,--gc-sections"
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PRECIOUS="-fno-omit-frame-pointer"
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CROSS=1
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ARCH=${PROG%%-*}
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if [ x"$ARCH" = x"$PROG" ]; then
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fatal_error "cosmocross must be run via cross compiler"
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fi
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CC="$BIN/$ARCH-linux-cosmo-gcc"
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CRT="$BIN/../$ARCH-linux-cosmo/lib/crt.o"
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LDLIBS="-lcosmo"
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LDFLAGS="$LDFLAGS -L$BIN/../$ARCH-linux-cosmo/lib"
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if [ x"$PROG" != x"${PROG%++}" ]; then
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CC="$BIN/$ARCH-linux-cosmo-g++"
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CFLAGS="$CFLAGS -fno-rtti -fno-exceptions -fuse-cxa-atexit"
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LDLIBS="-lcxx $LDLIBS"
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fi
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PAGESZ=4096
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if [ x"$ARCH" = x"x86_64" ]; then
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OBJCOPYFLAGS="-S -O binary"
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CRT="$BIN/../$ARCH-linux-cosmo/lib/ape-no-modify-self.o $CRT"
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CPPFLAGS="$CPPFLAGS -mno-red-zone"
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CFLAGS="$CFLAGS -mno-tls-direct-seg-refs"
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LDFLAGS="$LDFLAGS -Wl,-T,$BIN/../$ARCH-linux-cosmo/lib/ape.lds"
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elif [ x"$ARCH" = x"aarch64" ]; then
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OBJCOPYFLAGS="-S"
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PAGESZ=16384
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CFLAGS="$CFLAGS -ffixed-x18 -ffixed-x28 -mno-outline-atomics"
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LDFLAGS="$LDFLAGS -Wl,-T,$BIN/../$ARCH-linux-cosmo/lib/aarch64.lds"
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else
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fatal_error "$ARCH: unsupported architecture"
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fi
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LDFLAGS="$LDFLAGS -Wl,-z,common-page-size=$PAGESZ -Wl,-z,max-page-size=16384"
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OPT=
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FIRST=1
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OUTPUT=
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SFLAG=0
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INTENT=ld
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GOT_SOME=0
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NEED_OUTPUT=
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RELOCATABLE=0
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for x; do
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if [ $FIRST -eq 1 ]; then
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set --
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FIRST=0
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fi
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if [ -n "$NEED_OUTPUT" ]; then
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NEED_OUTPUT=
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OUTPUT=$x
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set -- "$@" "$x"
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continue
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fi
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if [ x"$x" = x"-" ] || # is an argument
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[ x"$x" = x"${x#-*}" ]; then # !startswith(x, "-")
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GOT_SOME=1
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elif [ x"$x" = x"-static-libstdc++" ]; then
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continue
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elif [ x"$x" = x"-static-libgcc" ]; then
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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"$x" = x"-s" ]; then
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SFLAG=1
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continue
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elif [ x"$x" = x"-r" ]; then
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RELOCATABLE=1
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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"$x" = x"-mcosmo" ]; then
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CPPFLAGS="$CPPFLAGS -D_COSMO_SOURCE"
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continue
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elif [ x"$x" != x"${x#-o}" ]; then
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OUTPUT=${x#-o}
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elif [ x"$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"-r" ] ||
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[ x"$x" = x"-pie" ] ||
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[ x"$x" = x"-frtti" ] ||
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[ x"$x" = x"-shared" ] ||
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[ x"$x" = x"-nostdlib" ] ||
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[ x"$x" = x"-mred-zone" ] ||
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[ x"$x" = x"-fexceptions" ] ||
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[ x"$x" = x"-fsanitize=thread" ]; then
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echo "$PROG: $x not supported" >&2
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exit 1
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elif [ x"$x" = x"-fomit-frame-pointer" ]; then
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# Quoth Apple "The frame pointer register must always address a
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# valid frame record. Some functions — such as leaf functions or
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# tail calls — may opt not to create an entry in this list. As a
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# result, stack traces are always meaningful, even without debug
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# information."
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set -- "$@" -momit-leaf-frame-pointer -foptimize-sibling-calls
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continue
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elif [ x"$x" != x"${x#-Werror}" ] || \
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[ x"$x" = x"-pedantic-errors" ]; 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"-march=native" ]; then
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if [ $CROSS -eq 0 ]; then
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set -- "$@" $("$BIN/march-native")
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else
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fatal_error "-march=native can't be used when cross compiling"
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fi
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continue
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elif [ x"$x" = x"-dumpversion" ]; then
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echo $GCC_VERSION
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exit 0
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elif [ x"$x" = x"-Wl,--version" ]; then
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GOT_SOME=1
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elif [ x"$x" = x"-dumpmachine" ]; then
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GOT_SOME=1
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fi
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set -- "$@" "$x"
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done
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if [ "$GOT_SOME" -eq 0 ]; then
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fatal_error "no input files"
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fi
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if [ $RELOCATABLE -eq 1 ]; then
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LDFLAGS="$LDFLAGS -r"
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fi
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# support --ftrace unless optimizing for size
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if [ x"$OPT" != x"-Os" ] && # $OPT != -Os
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[ x"${MODE%tiny}" = x"${MODE}" ]; then # $MODE not in (tiny, aarch64-tiny)
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if [ x"$ARCH" = x"x86_64" ]; then
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CFLAGS="$CFLAGS -fpatchable-function-entry=18,16"
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elif [ x"$ARCH" = x"aarch64" ]; then
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CFLAGS="$CFLAGS -fpatchable-function-entry=7,6"
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fi
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fi
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# maximize frame pointers unless optimizing for size
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if [ x"$OPT" != x"-Os" ] && # $OPT != "-Os"
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[ x"$MODE" != x"${MODE%tiny}" ]; then # endswith($MODE, "tiny")
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CFLAGS="$CFLAGS -fno-optimize-sibling-calls -mno-omit-leaf-frame-pointer"
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fi
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if [ $INTENT = cpp ]; then
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set -- "$CC" $PLATFORM $CPPFLAGS "$@"
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elif [ $INTENT = cc ]; then
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set -- "$CC" $PLATFORM $PREDEF $CFLAGS $CPPFLAGS "$@" $PRECIOUS
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else
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set -- "$CC" $PLATFORM $PREDEF $CFLAGS $CPPFLAGS $CRT "$@" $LDFLAGS $LDLIBS $PRECIOUS
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fi
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log_command "$@"
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"$@" || exit
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if [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
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if [ $INTENT = cc ] || [ $INTENT = ld ]; then
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"$BIN/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" "$OUTPUT.dbg" || exit
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"$BIN/$ARCH-linux-cosmo-objcopy" \
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$OBJCOPYFLAGS \
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"$OUTPUT.dbg" \
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"$OUTPUT" || exit
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"$BIN/zipcopy" \
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"$OUTPUT.dbg" \
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"$OUTPUT" || exit
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elif [ $SFLAG -eq 1 ]; then
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"$BIN/$ARCH-linux-cosmo-strip" \
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"$OUTPUT" || exit
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fi
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fi
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fi
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