warzone2100/m4/sdl_net.m4

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dnl SDL_image stuff
AC_DEFUN([AC_PATH_SDLNET],[
dnl
dnl Set SDLNETINC and SDLNETLIBS with needed cflags, libs to use SDL_net
dnl
dnl init
SDLNETINC=""
SDLNETLIB=""
SDLNETDIR=""
for dir in /usr/local /usr/X11R6 /usr; do
if test -f "$dir/include/SDL/SDL_net.h"; then
SDLNETINC="-I$dir/include/SDL"
SDLNETLIB="-L$dir/lib"
SDLNETDIR="$dir"
break
fi
done
_CPPFLAGS="$CPPFLAGS"
_LIBS="$LIBS"
CPPFLAGS="$SDL_CFLAGS $SDLNETINC"
LIBS="$SDL_LIBS $SDLNETLIB -lSDL_net"
AC_TRY_COMPILE([
#include "SDL.h"
#include "SDL/SDL_net.h"
int main(int argc, char **argv)
{
SDLNet_Init();
return 0
/*
],[
*/
], [SDLNETLIB="$SDLNETLIB -lSDL_net" SDLNETDIR="path"], [SDLNETDIR=""])
LIBS="$_LIBS"
CPPFLAGS="$_CPPFLAGS"
AC_MSG_CHECKING(for presence of SDL_net)
if test ! -z "$SDLNETDIR"; then
AC_MSG_RESULT(Found SDL_net in $SDLNETDIR)
$1
else
AC_MSG_RESULT(Could not find SDL_net)
$2
fi
])