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itgmania212121/stepmania/autoconf/m4/opengl.m4
T

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AC_DEFUN([SM_X_WITH_OPENGL],
[
AC_PATH_X
XCFLAGS=
XLIBS=
if test "$no_x" != "yes"; then
if test -n "$x_includes"; then
XCFLAGS="-I$x_includes"
fi
if test -n "$x_libraries"; then
XLIBS="-L$x_libraries -lX11"
fi
if test -n "$x_includes"; then
# See if we can compile X applications without using $XCFLAGS.
AC_MSG_CHECKING(if $XCFLAGS is really necessary)
AC_TRY_COMPILE( [#include <X11/Xos.h>], [],
[XCFLAGS=
AC_MSG_RESULT(no)],
[AC_MSG_RESULT(yes)])
fi
# Check for libXtst.
AC_CHECK_LIB(Xtst, XTestQueryExtension,
XLIBS="$XLIBS -lXtst"
[AC_DEFINE(HAVE_LIBXTST, 1, [libXtst available])],
,
[$XLIBS])
AC_DEFINE(HAVE_X11, 1, [X11 libraries present])
fi
AM_CONDITIONAL(HAVE_X11, test "$no_x" != "yes")
AC_SUBST(XCFLAGS)
AC_SUBST(XLIBS)
# Check for libGL and libGLU.
AC_CHECK_LIB(GL, glPushMatrix, XLIBS="$XLIBS -lGL",
AC_MSG_ERROR([No OpenGL library could be found.]), [$XLIBS])
AC_CHECK_LIB(GLU, gluGetString, XLIBS="$XLIBS -lGLU",
AC_MSG_ERROR([No GLU library could be found.]), [$XLIBS])
AC_SUBST(XLIBS)
])