1.1 --- a/configure.in	Wed Oct 31 12:16:39 2007 +0000
     1.2 +++ b/configure.in	Sat Nov 03 12:01:35 2007 +0000
     1.3 @@ -17,8 +17,12 @@
     1.4  AC_SUBST(PACKAGE_CFLAGS)
     1.5  AC_SUBST(PACKAGE_LIBS)
     1.6  
     1.7 -AC_CHECK_LIB(z, ucompress)
     1.8 -AC_CHECK_LIB(GL, glXQueryVersion)
     1.9 +AC_CHECK_LIB(z, uncompress, [], [
    1.10 +    echo "Zlib (libz.so) could not be found, but is required."
    1.11 +    exit 1])
    1.12 +AC_CHECK_LIB(GL, glXQueryVersion, [], [
    1.13 +    echo "The OpenGL library (libGL.so) could not be found, but is required."
    1.14 +    exit 1])
    1.15  
    1.16  GETTEXT_PACKAGE=dream
    1.17  AC_SUBST(GETTEXT_PACKAGE)