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#-*-mode:sh;indent-tabs-mode:nil;tab-width:2;coding:utf-8-*-┐
#───vi: set net ft=sh ts=2 sts=2 fenc=utf-8 :vi─────────────┘
#
# OVERVIEW
#
# GNU/LLVM Compiler Frontend Frontend
#
# DESCRIPTION
#
# This wrapper script filters out certain flags so the compiler won't
# whine, and passes extra information to the preprocessor.
#
# EXAMPLE
#
# build/compile cc -o program program.c
if [ ! -d o/third_party/gcc ]; then
third_party/gcc/unbundle.sh
fi
if [ "$1" = "clang-10" ]; then
if ! command -v clang-10 >/dev/null; then
shift
set -- o/third_party/gcc/bin/x86_64-linux-musl-gcc "$@"
fi
fi
if [ "$1" = "clang++-10" ]; then
if ! command -v clang++-10 >/dev/null; then
shift
set -- o/third_party/gcc/bin/x86_64-linux-musl-g++ "$@"
fi
fi
export LC_ALL=C
MKDIR=${MKDIR:-$(command -v mkdir) -p} || exit
GZME=
PLAT="${1%% *}"
FDIAGNOSTIC_COLOR=
CCNAME=${CCNAME:-gcc}
CCVERSION=${CCVERSION:-4}
COUNTERMAND=
# The GNU Compiler Collection passes a lot of CFLAGS to the preprocessor
# (which we call CCFLAGS) but it should pass more; and we do just that.
FIRST=1
OUTARG=0
INVISIBLE=0
for x; do
if [ $FIRST -eq 1 ]; then
set --
FIRST=0
fi
if [ $OUTARG -eq 1 ]; then
OUTARG=0
OUT="$x"
fi
case "$x" in
-o)
set -- "$@" "$x"
OUTARG=1
;;
-w)
set -- "$@" "$x" -D__W__
;;
-pg)
if [ $INVISIBLE -eq 0 ]; then
set -- "$@" "$x" -D__PG__ # @see libc/macros.h
fi
;;
-mfentry)
if [ $INVISIBLE -eq 0 ]; then
set -- "$@" "$x" -D__MFENTRY__
fi
;;
-fomit-frame-pointer)
INVISIBLE=1
set -- "$@" "$x"
;;
-mno-vzeroupper)
set -- "$@" "$x" -Wa,-msse2avx -D__MNO_VZEROUPPER__
;;
-fsanitize=undefined)
set -- "$@" "$x" -D__FSANITIZE_UNDEFINED__
COUNTERMAND="$COUNTERMAND -fno-data-sections" # sqlite.o
;;
-mnop-mcount)
if [ "$CCNAME" = "gcc" ] && [ "$CCVERSION" -ge 6 ]; then
set -- "$@" "$x" -D__MNOP_MCOUNT__
fi
;;
-mrecord-mcount)
if [ "$CCNAME" = "gcc" ] && [ "$CCVERSION" -ge 6 ]; then
set -- "$@" "$x" -D__MRECORD_MCOUNT__
fi
;;
-fsanitize=implicit*integer*)
if ! [ "$CCNAME" = "gcc" ]; then
set -- "$@" "$x"
fi
;;
-f*sanitize*|-gz*|-*stack-protector*|-fvect-cost*|-mstringop*)
if [ "$CCNAME" = "gcc" ] && [ "$CCVERSION" -ge 6 ]; then
set -- "$@" "$x"
fi
;;
-freorder-blocks-and-partition|-fstack-clash-protection)
if [ "$CCNAME" = "gcc" ] && [ "$CCVERSION" -ge 8 ]; then
set -- "$@" "$x"
fi
;;
-fdiagnostic-color=*)
FDIAGNOSTIC_COLOR=$x
;;
-fopt-info*=*.optinfo)
if [ "$CCNAME" = "gcc" ] && [ "$CCVERSION" -ge 9 ]; then
GZME="$GZME ${x##*=}"
set -- "$@" "$x"
fi
;;
-R*) # e.g. clang's -Rpass-missed=all
if [ "${PLAT#*clang}" != "${PLAT}" ]; then
set -- "$@" "$x"
fi
;;
-fsave-optimization-record) # clang only
if [ "${PLAT#*clang}" != "${PLAT}" ]; then
set -- "$@" "$x"
fi
;;
*)
set -- "$@" "$x"
;;
esac
done
if [ -z "$FDIAGNOSTIC_COLOR" ] && [ "$TERM" != "dumb" ]; then
FDIAGNOSTIC_COLOR=-fdiagnostics-color=always
fi
if [ "${PLAT#*clang}" != "${PLAT}" ]; then
FIRST=1
for x; do
# clang's assembler isn't complete yet
if [ $FIRST -eq 1 ]; then
set -- \
"$x" \
-fno-integrated-as \
-Wno-unused-command-line-argument \
-Wno-incompatible-pointer-types-discards-qualifiers
FIRST=0
continue
fi
TRAPV= # clang handles -f{,no-}{trap,wrap}v weird
# removes flags clang whines about
case "$x" in
-gstabs) ;;
-ftrapv) ;;
-ffixed-*) ;;
-fcall-saved*) ;;
-fsignaling-nans) ;;
-fcx-limited-range) ;;
-fno-fp-int-builtin-inexact) ;;
-Wno-unused-but-set-variable) ;;
-Wunsafe-loop-optimizations) ;;
-mdispatch-scheduler) ;;
-ftracer) ;;
-frounding-math) ;;
-fmerge-constants) ;;
-fmodulo-sched) ;;
-msse2avx)
set -- "$@" -Wa,-msse2avx
;;
-fopt-info-vec) ;;
-fopt-info-vec-missed) ;;
-fmodulo-sched-allow-regmoves) ;;
-fgcse-*) ;;
-freschedule-modulo-scheduled-loops) ;;
-freschedule-modulo-scheduled-loops) ;;
-fipa-pta) ;;
-fsched2-use-superblocks) ;;
-fbranch-target-load-optimize) ;;
-fdelete-dead-exceptions) ;;
-funsafe-loop-optimizations) ;;
-fcall-used*) ;;
-mmitigate-rop) ;;
-mnop-mcount) ;;
-fno-align-jumps) ;;
-fno-align-labels) ;;
-fno-align-loops) ;;
-fivopts) ;;
-fschedule-insns) ;;
-fno-semantic-interposition) ;;
-mno-fentry) ;;
-f*shrink-wrap) ;;
-f*schedule-insns2) ;;
-fvect-cost-model=*) ;;
-fsimd-cost-model=*) ;;
-fversion-loops-for-strides) ;;
-fopt-info*) ;;
-f*var-tracking-assignments) ;;
-femit-struct-debug-baseonly) ;;
-ftree-loop-vectorize) ;;
-gdescribe-dies) ;;
-flimit-function-alignment) ;;
-ftree-loop-im) ;;
-fno-instrument-functions) ;;
-fstack-clash-protection) ;;
-mstringop-strategy=*) ;;
-mpreferred-stack-boundary=*) ;;
-*stack-protector*) ;; # clang requires segmented memory for this
-f*gnu-unique) ;;
-Wframe-larger-than=*) ;;
-f*whole-program) ;;
-Wa,--size-check=*) ;;
-Wa,--listing*) ;;
-mfpmath=sse+387) ;;
-Wa,--noexecstack) ;;
-freg-struct-return) ;;
-mcall-ms2sysv-xlogues) ;;
-mno-vzeroupper)
set -- "$@" -mllvm -x86-use-vzeroupper=0
;;
-Wa,-a*)
x="${x#*=}"
if [ "$x" ] && [ -p "$x" ]; then
printf '' >"$x"
fi
;;
*)
set -- "$@" "$x"
;;
esac
done
set -- "$@" -fno-stack-protector
else
# removes flags only clang supports
FIRST=1
for x; do
if [ $FIRST -eq 1 ]; then
set --
FIRST=0
fi
case "$x" in
-Oz) set -- "$@" -Os ;;
*) set -- "$@" "$x" ;;
esac
done
fi
set -- "$@" -no-canonical-prefixes $FDIAGNOSTIC_COLOR $COUNTERMAND
if [ "$SILENT" = "0" ]; then
printf "%s\n" "$*" >&2
else
printf "$LOGFMT" "${ACTION:-COMPILE}" "${TARGET:-$OUT}" >&2
fi
OUTDIR="${OUT%/*}"
if [ "$OUTDIR" != "$OUT" ] && [ ! -d "$OUTDIR" ]; then
$MKDIR "$OUTDIR" || exit 2
fi
REASON=failed
trap REASON=interrupted INT
if "$@"; then
for f in $GZME; do
if GZ=${GZ:-$(command -v gzip)}; then
if [ -f "$f" ]; then
build/actuallynice $GZ $ZFLAGS -qf $f &
fi
fi
done
exit 0
fi
if [ "$TERM" = "dumb" ]; then
f='%s %s\r\n\r\n'
else
f='\033[91m%s\033[39m \033[94m%s\033[39m\r\n\r\n'
fi
printf "$f" "$CCNAME $CCVERSION: compile $REASON:" "$*" >&2
exit 1