#! /bin/sh
# @configure_input@
#---------------------------------------------------------------------------#
# Copyright (C) 1995-1999 The University of Melbourne.
# This file may only be copied under the terms of the GNU General
# Public License - see the file COPYING in the Mercury distribution.
#---------------------------------------------------------------------------#
#
# IMPORTANT: the manpage is produced automatically from this help
# message, so if you change the help message, don't forget to check
# that the manpage still looks OK.
Help="\
Name:	mgnuc - Mercury front-end to GNU C
Usage:	mgnuc [<options>] [-- <gcc options>] files...
Options:
	-v, --verbose
		Echo gcc command before executing it.
	--no-ansi
		Don't pass \`-ansi' to gcc.
	--no-check
		Don't enable any of gcc's warnings.
	-s <grade>, --grade <grade>
	--asm-labels
	--gcc-non-local-gotos
	--gcc-global-registers
	--gc {conservative, accurate, none}
	-p, --profiling
	--profile-calls
	--profile-time
	--profile-memory
	--debug
	--low-level-debug
	-g, --c-debug
	--no-c-optimize
	--use-trail
	--pic-reg
	--inline-alloc
	--split-c-files
		See the documentation in the \"Invocation\" section
		of the Mercury User's Guide.
		
Description:
	This runs gcc with the appropriate options for compiling Mercury
	programs.
	Normally it invokes gcc in ANSI mode with almost all warnings enabled,
	but this can be changed using the \`--no-ansi' or \`--no-check'
	options.
Environment variables:
	MERCURY_C_INCL_DIR, MERCURY_ALL_C_INCL_DIRS, MERCURY_DEFAULT_GRADE.
"

# *************************************************************************
# *** IMPORTANT NOTE: any changes to this file may also require similar ***
# *** changes to compiler/mercury_compile.m                             ***
# *************************************************************************

FULLARCH=@FULLARCH@
NONSHARED_LIB_DIR=${MERCURY_NONSHARED_LIB_DIR=@NONSHARED_LIB_DIR@}
MERC_C_INCL_DIR=${MERCURY_C_INCL_DIR=@LIBDIR@/inc}
MERC_ALL_C_INCL_DIRS=${MERCURY_ALL_C_INCL_DIRS=-I$MERC_C_INCL_DIR}
LOCAL_C_INCL_DIR=${MERCURY_LOCAL_C_INCL_DIR=/usr/local/include}
ALL_LOCAL_C_INCL_DIRS=${MERCURY_ALL_LOCAL_C_INCL_DIRS=-I$LOCAL_C_INCL_DIR}

DEFAULT_GRADE=${MERCURY_DEFAULT_GRADE=@DEFAULT_GRADE@}
CC=${MERCURY_C_COMPILER="@CC@"}
CFLAGS_FOR_REGS="@CFLAGS_FOR_REGS@"
CFLAGS_FOR_GOTOS="@CFLAGS_FOR_GOTOS@"
AS="@AS@"

case "$CC" in
    *gcc*)
	ANSI_OPTS="-ansi"
	CHECK_OPTS="
	      -Wall -Wwrite-strings -Wpointer-arith -Wtraditional
	      -Wshadow -Wstrict-prototypes -Wmissing-prototypes -Wno-unused"

# Note: we do not enable the following gcc warnings:
# -Wredundant-decls	causes too many complaints in system header files
# -Wconversion		really only intended to help people using \`unprotoize'
# -Waggregate-return	not useful, IMHO

# -Wcast-qual		causes LOTS of redundant warnings
# -Wcast-align 		causes redundant warnings in memory.c
# -pedantic		causes unsuppressable warnings about LVALUE_CAST()
# -Wnested-externs	causes unsuppressable warnings about callentry()
# -Wid-clash-31 	causes warnings about entry_mercury__xxx ...
# -Wenum-clash 		is for C++ only
# -Wunused		causes various spurious warnings

	OPT_OPTS="-O2 -fomit-frame-pointer"
	COMPILER=gcc
	;;
    *lcc*)
	ANSI_OPTS=
	CHECK_OPTS="-w"     # turn off all warnings due to spurious warnings.
	OPT_OPTS=""
	COMPILER=lcc
	;;
    *)
	ANSI_OPTS=
	CHECK_OPTS=
	OPT_OPTS="-O"
	COMPILER=unknown
	;;
esac

AS_OPTS=""
SPLIT_OPTS=""
INLINE_ALLOC_OPTS=""

verbose=false
assemble=false
c_debug=false
c_optimize=true

# include the file `init_grade_options.sh-subr'
@INIT_GRADE_OPTIONS@

while : ; do
    case "$1" in
	-h|--help|"-?")
		echo "$Help"
		exit 0
		;;

	-v|--verbose)
		verbose=true
		;;
	-v-|--no-verbose)
		verbose=false
		;;

	--assemble)
		assemble=true
		;;

	--no-ansi)
		ANSI_OPTS=
		DEFINE_OPTS="$DEFINE_OPTS -D__EXTENSIONS__"
		;;

	--no-check)
		CHECK_OPTS=
		;;

	--split-c-files)
		SPLIT_OPTS=-DSPLIT_C_FILES
		;;
	--no-split-c-files)
		SPLIT_OPTS=
		;;

	--inline-alloc)
		INLINE_ALLOC_OPTS="-DINLINE_ALLOC -DSILENT"
		;;
	--no-inline-alloc)
		INLINE_ALLOC_OPTS=""
		;;

	-g|--c-debug)
		c_debug=true
		;;
	-g-|--no-c-debug)
		c_debug=false
		;;

	--c-optimize)
		c_optimize=true
		;;
	--no-c-optimize)
		c_optimize=false
		;;

	--low-level-debug)
		low_level_debug=true ;;
	--no-low-level-debug)
		low_level_debug=false ;;

	# include the file `parse_grade_options.sh-subr'
	@PARSE_GRADE_OPTIONS@

	--)
		shift
		break
		;;
	*)
		break
		;;
    esac
    shift
done

# include the file `final_grade_options.sh-subr'
@FINAL_GRADE_OPTIONS@

#
# convert mgnuc options into gcc options
#
# IMPORTANT: any changes here will require similar changes to
# compiler/mercury_compile.m.
#

case $asm_labels in
	true)		ASM_OPTS="-DUSE_ASM_LABELS" ;;
	false)		ASM_OPTS="" ;;
esac

case $non_local_gotos in
	true)		GOTO_OPTS="-DUSE_GCC_NONLOCAL_GOTOS" ;;
	false)		GOTO_OPTS="" ;;
esac

case $global_regs in
	true)		REG_OPTS="-DUSE_GCC_GLOBAL_REGISTERS" ;;
	false)		REG_OPTS="" ;;
esac

case $stack_trace in
	true)		STACK_TRACE_OPTS="-DMR_STACK_TRACE" ;;
	false)		STACK_TRACE_OPTS="" ;;
esac

case $require_tracing in
	true)		TRACE_OPTS="-DMR_REQUIRE_TRACING" ;;
	false)		TRACE_OPTS="" ;;
esac

case $c_debug in
	true)		C_DEBUG_OPTS="-g" ;;
	false)		C_DEBUG_OPTS="" ;;
esac

case $c_optimize in
	true)		;;
	false)		OPT_OPTS="" ;;
esac

case $low_level_debug in
	true)		LLDEBUG_OPTS="-DMR_LOWLEVEL_DEBUG" ;;
	false)		LLDEBUG_OPTS="" ;;
esac

case $gc_method in
	accurate)	GC_OPTS="-DNATIVE_GC" ;;
	conservative)	GC_OPTS="-DCONSERVATIVE_GC" ;;
	none)		GC_OPTS="" ;;
esac

case $profile_time in
	true)		PROF_TIME_OPTS="-DPROFILE_TIME" ;;
	false)		PROF_TIME_OPTS="-DNO_SIGNALS" ;;
esac

case $profile_calls in
	true)		PROF_CALLS_OPTS="-DPROFILE_CALLS" ;;
	false)		PROF_CALLS_OPTS="" ;;
esac

case $profile_memory in
	true)		PROF_MEMORY_OPTS="-DPROFILE_MEMORY" ;;
	false)		PROF_MEMORY_OPTS="" ;;
esac

case $use_trail in
	true)		TRAIL_OPTS="-DMR_USE_TRAIL" ;;
	false)		TRAIL_OPTS="" ;;
esac

case $use_minimal_model in
	true)		MINIMAL_MODEL_OPTS="-DMR_USE_MINIMAL_MODEL" ;;
	false)		MINIMAL_MODEL_OPTS="" ;;
esac

case $thread_safe in
	true)
	case $FULLARCH in
		*solaris*) THREAD_OPTS="-DMR_THREAD_SAFE -DSOLARIS_THREADS \
				-D_SOLARIS_PTHREADS -D_REENTRANT";;

		*linux*) THREAD_OPTS="-DMR_THREAD_SAFE -DLINUX_THREADS \
				-D_THREAD_SAFE -D_REENTRANT";;

		*)		THREAD_OPTS="" ;;
	esac ;;
	false)		THREAD_OPTS="" ;;
esac

case $pic_reg in
	true)		PICREG_OPTS="-DPIC_REG" ;;
	false)		PICREG_OPTS="" ;;
esac

GRADE_OPTS="$ASM_OPTS $GOTO_OPTS $REG_OPTS"

# check that special grades are only used with gcc
case $COMPILER in
	gcc)	;;
	*)	case "$GRADE_OPTS" in
			*USE_GCC*)
		echo "$0: For compilers other than GNU C, the only" 1>&2
		echo "$0: base grade allowed is \`none'" 1>&2
					;;
		esac
esac

# if we're using global registers, add CFLAGS_FOR_REGS
case $global_regs in
	true)	GRADE_OPTS="$GRADE_OPTS $CFLAGS_FOR_REGS" ;;
	false)	;;
esac

# if we're using non-local gotos, add CFLAGS_FOR_GOTOS
case $non_local_gotos in
	true)	GRADE_OPTS="$GRADE_OPTS $CFLAGS_FOR_GOTOS" ;;
	false)	;;
esac

#
# Special case hacks for particular architectures
# Any code here needs to be duplicated in ../configure.in.
#

ARCH_OPTS=""
case "$FULLARCH" in
	mips-sgi-irix5.*)
		# nonlocal gotos don't work with PIC, which is the
		# default for Irix 5, so if nonlocal gotos are enabled
		# we need to disable the use of shared libraries.
		case $non_local_gotos in
			true)
LIBRARY_PATH="$NONSHARED_LIB_DIR:/usr/lib/nonshared:$LIBRARY_PATH"
				export LIBRARY_PATH
				AS_OPTS="-non_shared"
			;;
		esac
		;;
	i?86-*)
		# the use of stack_pointer in the ASM_JUMP macro
		# defined in runtime/goto.h causes lots of warnings
		# about using possibly uninitialized variables;
		# there's no easy way to supress them except by
		# disabling the warning.
		CHECK_OPTS="$CHECK_OPTS -Wno-uninitialized"
		;;
	*-solaris*|*-sunos*)
		# The solaris headers for pthreads are not ANSI :-(
		case $thread_safe in true)
			ANSI_OPTS=""
			;;
		esac
		;;
esac

#
# Kludge for gcc-2.6.3 bug on mips: if you use gcc global registers and -O2,
# gcc 2.6.3 gets an internal error compiling library/int.c and
# compiler/bytecode.c.  As a work-around, we compile those file with -O1.
# Similarly library/bag.c needs to be compiled with -O0.
# Similarly for gcc-2.6.3 on alpha with compiler/modules.c.
# Similarly for egcs-1.1 on sparc with library/lexer.c, library/string.c,
# and compiler/{deforest,dupelim,mercury_to_mercury,modules}.c.
#
case $COMPILER in gcc)
	case "$FULLARCH" in
		mips*)
			case "$*" in
			*" int.c "*|*" int.dir/int_"*".c "*)
				case "`$CC --version 2>/dev/null`" in 2.6.*)
					ARCH_OPTS="$ARCH_OPTS -O1" ;;
				esac;;
			*" bytecode.c "*|*" bytecode.dir/bytecode_"*".c "*)
				case "`$CC --version 2>/dev/null`" in 2.6.*)
					ARCH_OPTS="$ARCH_OPTS -O1" ;;
				esac;;
			*" bag.c "*)
				case "`$CC --version 2>/dev/null`" in 2.6.*)
					ARCH_OPTS="$ARCH_OPTS -O0" ;;
				esac;;
			esac ;;
		alpha*)
			case "$*" in
			*" modules.c "*|*" modules.dir/modules_"*".c "*)
				case "`$CC --version 2>/dev/null`" in 2.6.*)
					ARCH_OPTS="$ARCH_OPTS -O1" ;;
				esac
			esac ;;
		i?86*)
			case "$*" in
			*" call_gen.c "*|*" modules.dir/call_gen"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O0" ;;
			esac ;;
		sparc*)
			case "$*" in
			*" lexer.c "*|*" modules.dir/lexer"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O1" ;;
			*" string.c "*|*" modules.dir/string"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O1" ;;
			*" deforest.c "*|*" modules.dir/deforest"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O1" ;;
			*" dupelim.c "*|*" modules.dir/dupelim"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O1" ;;
			*" mercury_to_mercury.c "*|*" modules.dir/mercury_to_mercury"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O1" ;;
			*" modules.c "*|*" modules.dir/modules"*".c "*)
				ARCH_OPTS="$ARCH_OPTS -O1" ;;
			esac
	esac ;;
esac

#
# On sparc-sun-solaris2, we need to use -fPIC rather than -fpic if we're
# using grade `none', because otherwise the Mercury standard library
# overflows the fixed limit on the number of "small pic" references.
#
case "$FULLARCH" in sparc-sun-solaris2*)
	case "$grade" in none)
		case "$*" in *-fpic*)
			echo "mgnuc: using -fPIC rather than -fpic"
			OVERRIDE_OPTS="$OVERRIDE_OPTS -fPIC" ;;
		esac ;;
	esac ;;
esac

case $assemble in true)
	case $verbose in true)
		echo $AS $AS_OPTS "$@" ;;
	esac
	exec $AS $AS_OPTS "$@" ;;
esac


ALL_CC_OPTS="$MERC_ALL_C_INCL_DIRS $ANSI_OPTS $CHECK_OPTS $OPT_OPTS \
		$GRADE_OPTS $GC_OPTS $DEFINE_OPTS \
		$TRACE_OPTS $STACK_TRACE_OPTS $LLDEBUG_OPTS $C_DEBUG_OPTS \
		$PROF_TIME_OPTS $PROF_CALLS_OPTS $PROF_MEMORY_OPTS \
		$INLINE_ALLOC_OPTS $TRAIL_OPTS $MINIMAL_MODEL_OPTS \
		$SPLIT_OPTS $THREAD_OPTS $PICREG_OPTS $ARCH_OPTS $ARG_OPTS"

case $verbose in true)
	echo $CC $ALL_CC_OPTS "$@" $OVERRIDE_OPTS $ALL_LOCAL_C_INCL_DIRS;;
esac
case $# in
	0) exec $CC $ALL_CC_OPTS $OVERRIDE_OPTS ;;
	*) exec $CC $ALL_CC_OPTS "$@" $OVERRIDE_OPTS $ALL_LOCAL_C_INCL_DIRS;;
esac