mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-07-07 03:38:31 +00:00
Introduce new fatcosmocc command
This new script is an alternative to the `cosmocc` command. It's still a work in progress. It abstracts all the gory details of building separate copies of your executable and then running the apelink.com program.
This commit is contained in:
Justine Tunney
parent
8fc778162e
commit
d53c335a45
35 changed files with 1151 additions and 525 deletions
259
bin/cosmocc
Executable file
259
bin/cosmocc
Executable file
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#!/bin/sh
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#
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# non-fat 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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# export PATH="$PATH:/opt/cosmo/bin:/opt/cosmos/bin"
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# echo 'export PATH="$PATH:/opt/cosmo/bin:/opt/cosmos/bin"' >>~/.profile
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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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#
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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 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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# 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 -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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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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if [ "$1" = "--version" ]; then
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cat <<EOF
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$PROG (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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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 "$PROG: running git pull on cosmo..." >&2
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"$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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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="-fdata-sections -ffunction-sections -fno-pie -mno-tls-direct-seg-refs -mno-red-zone -fportcosmo"
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CPPFLAGS="-nostdinc -iquote $COSMO -isystem $COSMOS/include -isystem $COSMO/libc/isystem"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64"
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APEFLAGS="-L$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 -fno-threadsafe-statics"
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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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[ ! -x "$COSMO/o/$MODE/cosmopolitan.a" ]; then
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echo "$PROG: you need to run: $PROG --update" >&2
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exit 1
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fi
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# auto-install some shell libraries
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if [ ! -d "$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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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"${x#-*}" ]; then
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GOT_SOME=1
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elif [ x"$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"${x#-o}" ]; then
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OUTPUT=${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"-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 $x" >&2
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exit 1
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elif [ x"$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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x="-momit-leaf-frame-pointer"
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elif [ 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"$x" = x"-march=native" ]; then
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set -- "$@" $("$COSMO/o/$MODE/tool/build/march-native.com")
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continue
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fi
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set -- "$@" "$x"
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done
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if [ "$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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fi
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if [ $RELOCATABLE -eq 1 ]; then
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APEFLAGS="-r"
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fi
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if [ x"$MODE" = x"nox87" ]; then
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CCFLAGS="$CCFLAGS -mlong-double-64"
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fi
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if [ x"$OPT" != x"-Os" ] && [ x"${MODE#tiny}" != x"${MODE}" ]; then
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# support --ftrace unless optimizing for size
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CCFLAGS="$CCFLAGS -fpatchable-function-entry=18,16"
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fi
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if [ x"$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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"$@"
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fi
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if [ x"$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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fi
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if [ $INTENT = cpp ]; then
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set -- "$CC" $PLATFORM $CCFLAGS $CPPFLAGS "$@"
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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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else
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set -- "$CC" $PLATFORM $PREDEF $CCFLAGS $CPPFLAGS $LDFLAGS $APEFLAGS $CPPFLAGS "$@" \
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$LDLIBS -Wl,-z,common-page-size=4096 -Wl,-z,max-page-size=4096 -fno-omit-frame-pointer
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fi
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printf '# %s\n(cd %s; %s)\n' "$ORIGINAL" "$PWD" "$*" >>"${TMPDIR:-/tmp}/build.log"
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"$@" || 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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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" "$OUTPUT.dbg" || exit
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"$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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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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fi
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fi
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fi
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