#!/bin/sh
exstat=1
trap 'rm -f Makefile dummy dummy.exe testfunc.c testfunc testfunc.exe; exit $exstat' 0 1 2 3 15
#
# Yet another Apache Configure helper script.
# This script tests certain aspects of the compilation
# process. Right now, it can perform 5 tests:
#
# ./helpers/TestCompile lib <libname>
#    Which checks to see if <libname> exists on this system
#
# ./helpers/TestCompile lib <libname> <func>
#    Which checks to see if <libname> exists on this system and
#    contains func.
#
# ./helpers/TestCompile func <function>
#    Which checks to see if <function> exists
#
# ./helpers/TestCompile header <header>
#    Which checks to see if header file <header> exists
#
# ./helpers/TestCompile sanity
#    Which does a simple sanity check/test compile
#
# It does these by creating a small mini-makefile, based on
# ../Makefile.config and trying to compile a small dummy
# program. If the compilation succeeds, we assume the test
# was successful as well.
#
# This must be run as './helpers/TestCompile' from
# the ./src directory (same directory that Configure is
# located) if you want to test it out. Configure must
# also call it as './helpers/TestCompile'
#

cd ./helpers

#
# Handle "verbose" and "silent" flags
#
case "$1" in
    "-v")
        VERBOSE="yes"
	shift
	;;
    "-s")
        VERBOSE="no"
	shift
	;;
esac

#
# Make sure have the right arguments
#

case "$1" in
    "lib")
	if [ "x$2" = "x" ]; then
	    exit
	fi
	TLIB="-l$2"
	if [ "$VERBOSE" = "yes" ]; then
	    ERRDIR=""
	else
	    ERRDIR='2>/dev/null'
	fi
	if [ "x$3" = "x" ]; then
	    TARGET='dummy'
	else
	    TARGET='testfunc'
	    echo "void main(void) { $3(); }" > testfunc.c
	fi
	;;
    "sanity")
	TLIB=""
	if [ "$VERBOSE" = "no" ]; then
	    ERRDIR='2>/dev/null'
	else
	    ERRDIR=""
	fi
	TARGET='dummy'
	;;
    "func")
	if [ "x$2" = "x" ]; then
	    exit
	fi
	TLIB=""
	if [ "$VERBOSE" = "yes" ]; then
	    ERRDIR=""
	else
	    ERRDIR='2>/dev/null'
	fi
	TARGET='testfunc'
	cat <<EOF >testfunc.c
void main(void) {
    $2();
}
EOF
	;;
    "header")
	if [ "x$2" = "x" ]; then
	    exit
	fi
	TLIB=""
	if [ "$VERBOSE" = "yes" ]; then
	    ERRDIR=""
	else
	    ERRDIR='2>/dev/null'
	fi
	TARGET='testfunc'
	cat <<EOF >testfunc.c
#include <$2>
void main(void) { }
EOF
	;;
    *)
    	exit
	;;
esac

#
# Get makefile settings and build a basic Makefile
#
rm -f dummy
cat ../Makefile.config > Makefile
cat <<EOF >> Makefile
CFLAGS=\$(OPTIM) \$(CFLAGS1) \$(EXTRA_CFLAGS)
LIBS=\$(EXTRA_LIBS) \$(LIBS1)
INCLUDES=\$(INCLUDES1) \$(EXTRA_INCLUDES)
LDFLAGS=\$(LDFLAGS1) \$(EXTRA_LDFLAGS)

dummy:
	cd ..; \$(CC) \$(CFLAGS) \$(INCLUDES) \$(LDFLAGS) helpers/dummy.c -o helpers/dummy $TLIB \$(LIBS)

testfunc:
	cd ..; \$(CC) \$(CFLAGS) \$(INCLUDES) \$(LDFLAGS) helpers/testfunc.c -o helpers/testfunc $TLIB \$(LIBS)
EOF

# Now run that Makefile
eval "make $TARGET >/dev/null $ERRDIR"

# And see if dummy exists and is executable, if so, then we
# assume the condition we are testing for is good
#
# Use our PrintPath helper script, knowing that we have
# 2 versions of it though... Configure should set AP_PRINTPATH
# but if not, just assume we use our "generic" version. We
# also use the AP_PPSEARCHPATH "hack" to have PrintPath
# just search this directory.

if [ "x$AP_PRINTPATH" = "x" ] ; then
    AP_PRINTPATH=PrintPath
fi

if AP_PPSEARCHPATH=`pwd` ./$AP_PRINTPATH -s $TARGET ; then
    exstat=0
fi