configure

#!/bin/sh
##
## fbv configuration script
##

# See TGT's ./configure script for in-depth comments, becouse this
# one is delivered from it...

# If You touch anything below, You're asking for trouble

BASENAME=$(basename "$0")

unset prefix
unset infodir
unset mandir
unset srcdir
unset bindir
unset libs
unset jpeg
unset png
unset bmp
unset dfb

help(){
cat << EOF >&2
Usage: ./configure [options]
Options: [defaults in brackets after descriptions]

If a long option shows an argument as mandatory, then it is mandatory
for the equivalent short option also.  Similarly for optional arguments.

General:
  --help	    print this message
  --libs=LIBS	additional libraries required
  
Directory and file names:
  --prefix=PREFIX	install files in PREFIX [/usr/local]
  --bindir=DIR		binary executable in DIR [PREFIX/lib]
  --infodir=DIR		info documentation in DIR [PREFIX/info]
  --mandir=DIR		man documentation in DIR [PREFIX/man]

Features and packages:
  --without-libjpeg	  disable libjpeg support even if found
  --without-libpng    disable libpng support even if found
  --without-bmp       disable bmp support
EOF
}

# get options
TEMP=$(getopt -o h \
--long help,\
prefix:,srcdir:,bindir:,\
infodir:,mandir:,\
without-libjpeg,without-libpng,without-bmp,libs: \
-n "$BASENAME" -- "$@")

if [ $? != 0 ] ; then help ; exit 1 ; fi
#
eval set -- "$TEMP"

# process options
while true ; do
	case "$1" in
		-h|--help) help ; exit 0 ;;
		--libs) libs="$2"; shift 2 ;;
		--prefix) prefix="$2" ; shift 2 ;;
		--srcdir) srcdir="$2" ; shift 2 ;;
		--bindir) bindir="$2" ; shift 2 ;;
		--infodir) infodir="$2" ; shift 2 ;;
		--mandir) mandir="$2" ; shift 2 ;;
		--without-libjpeg) jpeg="disabled" ; shift ;;
		--without-libpng) png="disabled" ; shift ;;
		--without-bmp) bmp="disabled" ; shift ;;

		--) shift ; break ;;
		*) help ; exit 1 ;;
	esac
done

[ -z "$CC" ] && CC=cc
[ -z "$prefix" ] && prefix="/usr/local"
[ -z "$bindir" ] && bindir="${prefix}/bin"
[ -z "$mandir" ] && mandir="${prefix}/man"
[ -z "$infodir" ] && infodir="${prefix}/info"

cat << EOF | tee ./config.log >Make.conf
prefix	= $prefix
bindir	= $bindir
mandir	= $mandir
infodir	= $infodir
EOF

# tests
rm -f \$\$~test \$\$~test.c
cat > \$\$~test.c << EOF
main()
{
}
EOF

###
echo -n "checking for libjpeg presence... "
if [ "$jpeg" != "disabled" ]; then
jpeg="no"
$CC 2>>./config.log >>./config.log -o \$\$~test \$\$~test.c -ljpeg $libs
if [ -e \$\$~test ]; then
	libs="-ljpeg $libs" ; jpeg="yes"
fi
fi
echo $jpeg
echo "libjpeg: $jpeg" >> ./config.log
###
echo -n "checking for libpng presence... "
if [ "$png" != "disabled" ]; then
png="no"
$CC 2>>./config.log >>./config.log -o \$\$~test \$\$~test.c -lpng $libs
if [ -e \$\$~test ]; then
	libs="-lpng $libs" ; png="yes"
fi
fi
echo $png
echo "libpng: $png" >> ./config.log
###
echo -n "building with bmp support... "
if [ "$bmp" != "disabled" ]; then
bmp="yes"
fi
echo $bmp
echo "bmp: $bmp" >> ./config.log

###
rm -f \$\$~test \$\$~test.c

###
echo -n "checking for DEFAULT_FRAMEBUFFER... "
if [ -n "$FRAMEBUFFER" ]; then
	dfb="$FRAMEBUFFER"
else
	dfb="/dev/fb0"
fi
echo $dfb
echo "fb: $dfb" >> ./config.log

###
echo >> Make.conf
echo "LIBS	= $libs" | tee -a ./config.log >>Make.conf
echo "#define IDSTRING \"fbv "`cat VERSION`"\"" | tee -a ./config.log >config.h
echo "#define DEFAULT_FRAMEBUFFER \"$dfb\"" | tee -a ./config.log >>config.h
[ "$jpeg" != "disabled" ] && echo "#define FBV_SUPPORT_JPEG" | tee -a ./config.log >>config.h
[ "$png" != "disabled" ] && echo "#define FBV_SUPPORT_PNG" | tee -a ./config.log >>config.h
[ "$bmp" != "disabled" ] && echo "#define FBV_SUPPORT_BMP" | tee -a ./config.log >>config.h
echo "installation dir: $bindir"
echo "manuals dir: $mandir"

exit 0
## EOF