mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-07-08 20:28:30 +00:00
Make cosmocc capable of cross compilation
This commit is contained in:
Justine Tunney
parent
504a4bbf84
commit
d1b937bf1d
21 changed files with 439 additions and 132 deletions
267
bin/cosmocc
267
bin/cosmocc
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@ -11,43 +11,43 @@
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# ape-install # optionally install a faster systemwide ape loader
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# cosmocc --update # pull and rebuild toolchain artifacts
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#
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# building open source projects
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# getting started synopsis
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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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# cosmocc -o hello.com hello.c
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# ./foo.com
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# ./foo.com --strace
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# ./foo.com --ftrace
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#
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# cosmopolitan runtime flags
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# how to build a project like lua 5.4.6
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#
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# ./hello.com --strace
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# ./hello.com --ftrace
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# make all test CC=cosmocc
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# src/lua -e 'print("hi")'
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# make install INSTALL_TOP=/opt/cosmos
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# apecopy src/lua src/lua.com # convert to portable ape binary
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#
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# cosmpolitan runtime libraries
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# how to cross compile a project like lua 5.4.6
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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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# aarch64-unknown-cosmo-cc --update
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# make clean all test CC=aarch64-unknown-cosmo-cc AR='aarch64-unknown-cosmo-ar rc' -j8
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# qemu-aarch64 src/lua -e 'print("hi")'
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# make install INSTALL_TOP=/opt/cosmos/aarch64
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#
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# building 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 --update
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# cosmocc -Os -o foo.com foo.c
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#
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# building in tiniest mode (linux only)
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#
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# export MODE=tinylinux
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# (cd /opt/cosmo; make -j8 toolchain)
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# cosmocc --update
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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 --update
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# cosmocc -o foo.com foo.c
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#
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# detecting this environment
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@ -77,74 +77,134 @@
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# for further details, run `man gcc`
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PROG=${0##*/}
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MODE=${MODE:-$m}
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COSMO=${COSMO:-/opt/cosmo}
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COSMOS=${COSMOS:-/opt/cosmos}
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GCC_VERSION=11.2.0
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if [ "$1" = "--version" ]; then
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# note: only the underlying gcc compiler binaries are gpl
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# our shell script is released with the isc license
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# absolutely zero cosmo runtime libraries are gpl'd
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cat <<EOF
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$PROG (GCC) $GCC_VERSION
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Copyright (c) 2023 Justine Alexandra Roberts Tunney
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Cosmopolitan Libc and LLVM libcxx/compiler-rt are subject to non-GPL
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notice licenses, e.g. ISC, MIT, etc. Your compiled programs must embed
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our copyright notices. This toolchain is configured to do so default.
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Cosmopolitan comes with absolutely NO WARRANTY of any kind.
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For more information, see the Cosmopolitan LICENSE files.
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Copyright (C) 2019 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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This launches GNU GCC/Binutils subprocesses, which is free software; see
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Cosmopolitan's third_party/gcc/ for source code and copying conditions.
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There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE.
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EOF
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exit 0
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fi
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fatal_error() {
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echo "$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"
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CPPFLAGS="-fno-pie -nostdinc -iquote $COSMO"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd"
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APEFLAGS="-Wl,--gc-sections"
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PRECIOUS="-fno-omit-frame-pointer"
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CROSS=1
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ARCH=${PROG%%-*} # split(prog, '-')[0]
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if [ x"$ARCH" = x"$PROG" ]; then
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ARCH=x86_64
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CROSS=0
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fi
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if [ x"$ARCH" = x"x86_64" ]; then
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MODE=${MODE:-$m}
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else
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MODE=${MODE:-${m:-$ARCH}}
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fi
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if [ $CROSS -eq 0 ]; then
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COSMOS=${COSMOS:-/opt/cosmos}
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else
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COSMOS=${COSMOS:-/opt/cosmos/$ARCH}
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fi
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CC="$COSMO/o/third_party/gcc/bin/$ARCH-linux-musl-gcc"
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CRT="$COSMO/o/$MODE/libc/crt/crt.o"
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LDLIBS="$COSMO/o/$MODE/cosmopolitan.a"
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CPPFLAGS="$CPPFLAGS -isystem $COSMOS/include -isystem $COSMO/libc/isystem"
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LDFLAGS="$LDFLAGS -L$COSMOS/lib"
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if [ x"$PROG" != x"${PROG%++}" ]; then
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CC="$COSMO/o/third_party/gcc/bin/$ARCH-linux-musl-g++"
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CFLAGS="$CFLAGS -fno-rtti -fno-exceptions -fuse-cxa-atexit"
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LDLIBS="$COSMO/o/$MODE/third_party/libcxx/libcxx.a $LDLIBS"
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fi
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PAGESZ=4096
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if [ x"$ARCH" = x"x86_64" ]; then
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OBJCOPYFLAGS="-S -O binary"
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CRT="$COSMO/o/$MODE/ape/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,$COSMO/o/$MODE/ape/public/ape.lds"
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if [ x"$MODE" = x"aarch64" ]; then
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fatal_error '$MODE must not be aarch64 when using x86_64 cross compiler'
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elif [ x"$MODE" != x"${MODE#* }" ]; then
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fatal_error '$MODE must not contain hyphens when targeting x86_64'
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fi
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elif [ x"$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,$COSMO/o/$MODE/ape/aarch64.lds"
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if [ x"$MODE" != x"aarch64" ] && [ x"$MODE" = x"${MODE#aarch64-*}" ]; then
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fatal_error '$MODE must be either "aarch64" or "aarch64-FOO" when using aarch64 cross compiler'
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fi
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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=$PAGESZ -Wl,-z,max-page-size=$PAGESZ"
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if [ ! -d "$COSMO" ]; then
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fatal_error "you need to clone cosmopolitan to your $COSMO directory"
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fi
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if [ "$1" = "--update" ]; then
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cd /opt/cosmo || exit
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if GIT=$(command -v git); then
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echo "$PROG: running git pull on cosmo..." >&2
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echo "running git pull on cosmo..." >&2
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"$GIT" pull --quiet || exit
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fi
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echo "$PROG: building cosmo x86_64 toolchain..." >&2
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make --silent -j toolchain MODE="${MODE}" || exit
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"$COSMO/tool/scripts/setup-cosmos"
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echo "$PROG: successfully updated your cosmo toolchain" >&2
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echo "building cosmo host toolchain..." >&2
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make --silent -j toolchain MODE= || exit
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echo "building cosmo target (MODE=$MODE) toolchain..." >&2
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make --silent -j toolchain MODE="$MODE" || exit
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echo "setting up your cosmos..." >&2
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mkdir -p "$COSMOS/lib" || exit
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for lib in c dl gcc_s m pthread resolv rt dl z stdc++; do
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if [ ! -f "$COSMOS/lib/lib${lib}.a" ]; then
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printf '\041\074\141\162\143\150\076\012' >"$COSMOS/lib/lib${lib}.a" || exit
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fi
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done
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echo "successfully updated your cosmo toolchain" >&2
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exit
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fi
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CC="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-gcc"
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ORIGINAL="$0 $*"
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PLATFORM="-D__COSMOPOLITAN__"
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PREDEF="-include libc/integral/normalize.inc"
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CCFLAGS="-fno-pie -mno-tls-direct-seg-refs -mno-red-zone -fportcosmo"
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CPPFLAGS="-nostdinc -iquote $COSMO -isystem $COSMOS/include -isystem $COSMO/libc/isystem"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,-z,common-page-size=4096 -Wl,-z,max-page-size=4096"
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APEFLAGS="-L$COSMOS/lib -Wl,--gc-sections -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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if [ x"$0" != x"${0%++}" ]; then
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CC="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-g++"
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CCFLAGS="$CCFLAGS -fno-rtti -fno-exceptions -fuse-cxa-atexit"
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LDLIBS="$COSMO/o/$MODE/third_party/libcxx/libcxx.a $LDLIBS"
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fi
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if [ ! -d "$COSMO" ]; then
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echo "$PROG: you need to clone cosmopolitan to your $COSMO directory" >&2
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exit 1
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fi
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if [ ! -d "$COSMOS" ] ||
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if [ ! -f "$COSMOS/lib/libc.a" ] ||
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[ ! -f "$COSMO/o/$MODE/cosmopolitan.a" ]; then
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echo "$PROG: you need to run: $PROG --update" >&2
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exit 1
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fatal_error "you need to run: $PROG --update"
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fi
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# auto-install some shell libraries
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if [ ! -d "$COSMOS/lib" ]; then
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mkdir -p "$COSMOS/lib"
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fi
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for lib in c dl gcc_s m pthread resolv rt dl z stdc++; do
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if [ ! -f "$COSMOS/lib/lib$lib.a" ]; then
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printf '\041\074\141\162\143\150\076\012' >"$COSMOS/lib/lib$lib.a"
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fi
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done
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OPT=
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FIRST=1
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OUTPUT=
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@ -203,7 +263,7 @@ for x; do
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elif [ x"$x" = x"-fsanitize=all" ] ||
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[ x"$x" = x"-fsanitize=address" ] ||
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[ x"$x" = x"-fsanitize=undefined" ]; then
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echo "$PROG: use cosmo MODE=dbg rather than passing $x" >&2
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echo "$PROG: use cosmo MODE=dbg or MODE=asan rather than passing $x" >&2
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exit 1
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elif [ x"$x" = x"-fomit-frame-pointer" ]; then
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# Quoth Apple "The frame pointer register must always address a
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@ -219,7 +279,11 @@ for x; do
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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"$x" = x"-march=native" ]; then
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set -- "$@" $("$COSMO/o/$MODE/tool/build/march-native.com")
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if [ $CROSS -eq 0 ]; then
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set -- "$@" $("$COSMO/o//tool/build/march-native.com")
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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 $GCC_VERSION
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@ -229,55 +293,66 @@ for x; do
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done
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if [ "$GOT_SOME" -eq 0 ]; then
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echo "$PROG: fatal error: no input files" >&2
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echo "compilation terminated." >&2
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exit 1
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fatal_error "no input files"
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fi
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if [ $RELOCATABLE -eq 1 ]; then
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APEFLAGS="-r"
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LDFLAGS="$LDFLAGS -r"
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fi
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if [ x"$MODE" = x"nox87" ]; then
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CCFLAGS="$CCFLAGS -mlong-double-64"
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CPPFLAGS="$CPPFLAGS -mlong-double-64"
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fi
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# support --ftrace unless optimizing for size
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if [ x"$OPT" != x"-Os" ] && # $OPT != -Os
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[ x"${MODE%tiny}" = x"${MODE}" ]; then # $MODE not in (tiny, aarch64-tiny)
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# support --ftrace unless optimizing for size
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CCFLAGS="$CCFLAGS -fpatchable-function-entry=18,16"
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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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if [ x"$MODE" = x"dbg" ]; then
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set -- \
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-fsanitize=address \
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-fsanitize=undefined \
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"$@"
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# ask compiler to generate sanitization code in debug mode
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if [ x"$MODE" != x"${MODE%*dbg}" ]; then # endswith($MODE, "dbg")
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if [ x"$ARCH" = x"x86_64" ]; then
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CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined"
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else
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CPPFLAGS="$CPPFLAGS -fsanitize=undefined"
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fi
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fi
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if [ x"$OPT" != x"-Os" ] &&
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[ x"${MODE#tiny}" != x"${MODE}" ]; then
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set -- \
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-fno-optimize-sibling-calls \
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-mno-omit-leaf-frame-pointer \
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"$@"
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# ask compiler to generate memory safety code in asan mode
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if [ x"$MODE" != x"${MODE%*asan}" ]; then # endswith($MODE, "asan")
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if [ x"$ARCH" = x"x86_64" ]; then
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CPPFLAGS="$CPPFLAGS -fsanitize=address"
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else
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fatal_error "address sanitizer not supported on non-x86 yet"
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fi
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fi
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# maximize frame pointers unless optimizing for size
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if [ x"$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 $CCFLAGS $CPPFLAGS "$@"
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set -- "$CC" $PLATFORM $CPPFLAGS "$@"
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elif [ $INTENT = cc ]; then
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set -- "$CC" $PLATFORM $PREDEF $CCFLAGS $CPPFLAGS "$@" -fno-omit-frame-pointer
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set -- "$CC" $PLATFORM $PREDEF $CFLAGS $CPPFLAGS "$@" $PRECIOUS
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else
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set -- "$CC" $PLATFORM $PREDEF $CCFLAGS $CPPFLAGS $CPPFLAGS "$@" \
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$LDFLAGS $APEFLAGS $LDLIBS -fno-omit-frame-pointer
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set -- "$CC" $PLATFORM $PREDEF $CFLAGS $CPPFLAGS $CRT "$@" $LDFLAGS $LDLIBS $PRECIOUS
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fi
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printf '# %s\n(cd %s; %s)\n' "$ORIGINAL" "$PWD" "$*" >>"${TMPDIR:-/tmp}/build.log"
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log_command "$@"
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"$@" || exit
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if [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
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if [ $INTENT = cc ] || [ $INTENT = ld ]; then
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"$COSMO/o/$MODE/tool/build/fixupobj.com" "$OUTPUT" || exit
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"$COSMO/o//tool/build/fixupobj.com" \
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"$OUTPUT" || exit
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fi
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if [ $INTENT = ld ]; then
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if [ x"$OUTPUT" != x"${OUTPUT%.com}" ] ||
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@ -286,10 +361,16 @@ if [ -n "$OUTPUT" ] && [ -f "$OUTPUT" ]; then
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# -> foo.com (ape)
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# -> foo.com.dbg (elf)
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mv -f "$OUTPUT" "$OUTPUT.dbg" || exit
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"$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-objcopy" -S -O binary "$OUTPUT.dbg" "$OUTPUT" || exit
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"$COSMO/o/$MODE/tool/build/zipcopy.com" "$OUTPUT.dbg" "$OUTPUT" || exit
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"$COSMO/o/third_party/gcc/bin/$ARCH-linux-musl-objcopy" \
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$OBJCOPYFLAGS \
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"$OUTPUT.dbg" \
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"$OUTPUT" || exit
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"$COSMO/o//tool/build/zipcopy.com" \
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"$OUTPUT.dbg" \
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"$OUTPUT" || exit
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elif [ $SFLAG -eq 1 ]; then
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"$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-strip" "$OUTPUT" || exit
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"$COSMO/o/third_party/gcc/bin/$ARCH-linux-musl-strip" \
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"$OUTPUT" || exit
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fi
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fi
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fi
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