44 lines
1.1 KiB
Plaintext
44 lines
1.1 KiB
Plaintext
AC_DEFUN(SM_OPENGL,
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[
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AC_ARG_ENABLE(mesa, AC_HELP_STRING([--enable-mesa], [Use libMesaGL]), enable_mesa=$enableval, enable_mesa=no)
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GL_LIBS=
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if test "$enable_mesa" = "yes"; then
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AC_CHECK_LIB(MesaGL, glPushMatrix, GL_LIBS=-lMesaGL)
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fi
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if test "$GL_LIBS" = ""; then
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AC_CHECK_LIB(GL, glPushMatrix, GL_LIBS="-lGL")
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fi
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# Some broken systems need us to link to X explicitly because
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# the GL library needs it, instead of doing it automatically.
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if test "$GL_LIBS" = ""; then
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AC_PATH_X
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AC_PATH_XTRA
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oldLIBS=$LIBS
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EXTRALIBS="$X_LIBS $X_EXTRA_LIBS $X_PRE_LIBS -lX11"
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LIBS="$LIBS $EXTRALIBS"
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if test "$enable_mesa" = "yes"; then
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AC_CHECK_LIB(MesaGL, glPushMatrix, GL_LIBS="-lMesaGL $EXTRALIBS")
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fi
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if test "$GL_LIBS" = ""; then
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AC_CHECK_LIB(GL, glPushMatrix, GL_LIBS="-lGL $EXTRALIBS")
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fi
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LIBS=$oldLIBS
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oldLIBS=
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EXTRALIBS=
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fi
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AC_SUBST(GL_LIBS)
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if test "$GL_LIBS" = ""; then
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AC_MSG_ERROR(["No OpenGL libraries could be found. If you want
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to search for MesaGL, pass the "--enable-mesa" flag to configure.])
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fi
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])
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