cosmoc++

#!/bin/sh
# replacement for c++ command
#
# we assume you run the following beforehand
#
#     sudo chmod 1777 /opt
#     cd /opt
#     git clone https://github.com/jart/cosmopolitan cosmo
#     cd cosmo
#     make -j
#
# you can then use it to build open source projects, e.g.
#
#     export CC=cosmocc
#     export CXX=cosmoc++
#     export LD=cosmoc++
#     ./configure --prefix=/opt/cosmos
#     make -j
#     make install
#

if [ "$1" = "--version" ]; then
cat <<'EOF'
x86_64-unknown-cosmo-g++ (GCC) 9.2.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
EOF
exit 0
fi

# change the following two lines if required
COSMO="/Users/greg/net/cosmopolitan"
CXX="x86_64-linux-musl-g++"
#COSMO="/opt/cosmo"
#CXX="/opt/cosmo/o/third_party/gcc/bin/x86_64-linux-musl-g++"

CCFLAGS="-O2 -fno-omit-frame-pointer -fdata-sections -ffunction-sections -fno-pie -pg -mnop-mcount -mno-tls-direct-seg-refs"
CXXFLAGS="-fno-exceptions -fuse-cxa-atexit -fno-threadsafe-statics"
CPPFLAGS="-DNDEBUG -nostdinc -iquote $COSMO -isystem $COSMO/include -isystem $COSMO/libc/isystem -include libc/integral/normalize.inc"
LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,--gc-sections -L$COSMO/lib -Wl,-T,$COSMO/o/ape/public/ape.lds $COSMO/o/ape/ape-no-modify-self.o $COSMO/o/libc/crt/crt.o"
LDLIBS="$COSMO/o/third_party/libcxx/libcxx.a $COSMO/o/cosmopolitan.a"

HAS_C=0
HAS_O=0
HAS_E=0
FIRST=1
for x; do
  if [ $FIRST -eq 1 ]; then
    set --
    FIRST=0
  fi
  if [ "$x" = "-c" ]; then
    HAS_C=1
  fi
  if [ "$x" = "-E" ]; then
    HAS_E=1
  fi
  if [ "$x" = "-o" ] || [ "${x#-o}" != "$x" ]; then
    HAS_O=1
  fi
  set -- "$@" "$x"
done

if [ "$HAS_E" = "1" ]; then
  set -- $CPPFLAGS "$@"
elif [ "$HAS_C" = "1" ]; then
  set -- $CCFLAGS $CXXFLAGS $CPPFLAGS "$@"
else
  set -- $LDFLAGS $CPPFLAGS "$@" $LDLIBS
fi

set -- "$CXX" "$@"
printf '(cd %s; %s)\n' "$PWD" "$*" >>/tmp/build.log
echo "$@"
exec "$@"