configure

#!/bin/sh
#
# Dummy configure to extract parameters and pass the to make
#

[ -z "$CC" ] && CC=gcc

HEADERS=""

try_compile_c()
{
	echo "$1" | $CC $CFLAGS -c -x c -o /dev/null - > /dev/null 2>&1
}

check_for_compiler()
{
	echo -n "Checking for working compiler ($CC) ... "
	if try_compile_c "int main(void) { return 0; }"; then
		echo "OK"
	else
		echo "Failed"
		exit 1;
	fi
}

check_for_header()
{
	echo -n "Checking for <$1> ... "

	try_compile_c "
	#include <$1>
	int main(void) { return 0; }"

	if [ $? -eq 0 ]; then
		echo "Yes"
		HEADERS="$HEADERS $1"
	else
		echo "No"
	fi
}

check_for_compiler
check_for_header "mpv/client.h"
check_for_header "mpg123.h"

echo -n > config.mk
echo "#ifndef CONFIG_H" > config.h
echo "#define CONFIG_H" >> config.h
echo >> config.h

while true; do
  case "$1" in
  --prefix=*) echo "PREFIX=$(echo $1|cut -d= -f2)" >> config.mk; shift;;
  --libdir=*) echo "LIBDIR=$(echo $1|cut -d= -f2)" >> config.mk; shift;;
  --mandir=*) echo "MANDIR=$(echo $1|cut -d= -f2)" >> config.mk; shift;;
  --bindir=*) echo "BINDIR=$(echo $1|cut -d= -f2)" >> config.mk; shift;;
  --sysconfdir=*) echo "SYSCONFDIR=$(echo $1|cut -d= -f2)" >> config.mk; shift;;
  --*) shift;;
  *) break;
  esac
done

[ -n "$CC" ] && echo "CC=$CC" >> config.mk
[ -n "$CFLAGS" ] && echo "CFLAGS=$CFLAGS" >> config.mk

for i in $HEADERS; do
	HEADER=$(echo $i |tr [a-z]./ [A-Z]__)
	echo "#define HAVE_$HEADER 1" >> config.h
	echo "HAVE_$HEADER=yes" >> config.mk
done

echo >> config.h
echo "#endif /* CONFIG_H */" >> config.h