#!/usr/bin/env sh
cosmo="${COSMO:-"/cosmopolitan"}"
unset flavor
[ ! -s "$cosmo/env" ] || . "$cosmo/env"
dist="${COSMO_DIST:-"$cosmo/dist/${flavor:-def}"}"

_CFLAGS="-fno-omit-frame-pointer -fdata-sections -ffunction-sections -fno-pie -pg -mnop-mcount -mno-tls-direct-seg-refs"
_CPPFLAGS="-DNDEBUG -nostdinc -iquote $cosmo -isystem $cosmo/libc/isystem -include $cosmo/libc/integral/normalize.inc"
_LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -Wl,-z,max-page-size=0x1000"
_LDFLAGS="$_LDFLAGS -Wl,-T,$dist/public/ape.lds $dist/ape-no-modify-self.o $dist/crt.o"
_LDLIBS="$dist/cosmopolitan.a"

is_in() {
    x="$1"
    shift || exit
    for y in "$@"; do
        if [ "$x" = "$y" ]; then
            return 0
        fi
    done
    return 1
}

any=0
flag_c=0
flag_E=0
flag_M=0
flag_o=0
flag_shared=0
is_conftest=0

for x in "$@"; do
    [ $any = 1 ] || set --
    any=1
    if [ "$x" = --version ]; then
        printf '%s\n' \
'x86_64-linux-musl-gcc (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.' \
''
        exit 0
    elif is_in "$x" \
        -fomit-frame-pointer -fPIC -fpic -lc -lc_r -lcma -ldl \
        -lgcc -lm -lpthread -lpthreads -lresolv -lrt -lunwind \
        -lutil -Wl,-Bdynamic -Wl,-Bstatic
    then continue
    elif [ "$x" = -c ]; then
        flag_c=1
    elif [ "$x" = -E ]; then
        flag_E=1
    elif [ "$x" = -M ] || [ "$x" = -MM ]; then
        flag_M=1
    elif [ "$x" = -shared ]; then
        flag_shared=1
    elif [ "$x" = -o ] || [ "${x#-o}" != "$x" ]; then
        flag_o=1
    elif [ "$x" = conftest.c ]; then
        is_conftest=1
    fi
    set -- "$@" "$x"
done

if [ $flag_E = 1 ] || [ $flag_M = 1 ]; then
    # only preprocess.
    set -- $_CPPFLAGS "$@"
elif [ $flag_c = 1 ]; then
    # preprocess and compile.
    set -- $_CFLAGS $_CPPFLAGS "$@"
else
    # preprocess, compile, and link.
    # TODO: but then where's $_CFLAGS?
    set -- $_LDFLAGS $_CPPFLAGS "$@" $_LDLIBS
fi

if [ $any = 0 ]; then
    printf '\033[1m%s\033[m\n' >&2 'warning: cosmocc called without flags'
    x86_64-linux-musl-gcc
else
    if [ -w / ]; then
        # probably a container being built.
        printf '%s\n' >>/cosmocc.log "$*"
    fi
    if [ $is_conftest = 1 ]; then
        x86_64-linux-musl-gcc -fmax-errors=3 >/tmp/fudged "$@" || exit
        sed -e '/^typedef struct {/,/}/d' -e '/^typedef/d' /tmp/fudged
    else
        x86_64-linux-musl-gcc "$@"
    fi
fi