Thanks for your response but still does not work, I have left my code in
configure.in:
MDL_HAVE_OPENGL
if test -z "$GL_LIBS"
then
AC_MSG_RESULT([GL libs not found, OpenGL disabled.])
else
if test -z "$GL_CFLAGS"
then
AC_MSG_RESULT([GL headers not found, OpenGL disabled.])
else
AC_MSG_RESULT([OpenGL flags: $GL_CFLAGS])
AC_MSG_RESULT([OpenGL libs: $GL_LIBS])
fi
fi
AM_CONDITIONAL( WITH_OPENGL, test -n "$GL_FLAGS")
AM_CONDITIONAL( WITH_OPENGL, test -n "$GL_LIBS")
and in my makefile.am:
if WITH_OPENGL
bin_PROGRAMS = phan3D
endif
but it does not work, I can not get it to compile conditionally. Please,
can someone show me how to correct my code?
Thanks
Roman
On Fri, 2004-02-06 at 10:38, Ralf Corsepius wrote:
> On Fri, 2004-02-06 at 09:24, Jose Roman Bilbao wrote:
> > Hi,
> >
> > What is wrong with this piece of code? It always says that there is no
> > OpenGL although it has been found:
> >
> > #checking for OpenGL
> > MDL_HAVE_OPENGL
> >
> > if test -z "$GL_LIBS"
> > then
> > AC_MSG_RESULT([GL libs not found, OpenGL disabled.])
> > else
> > if test -z "$GL_CFLAGS"
> > then
> > AC_MSG_RESULT([GL headers not found, OpenGL disabled.])
> > else
> > AC_MSG_RESULT([OpenGL flags: $GL_CFLAGS])
> > AC_MSG_RESULT([OpenGL libs: $GL_LIBS])
> > fi
> > fi
> > AM_CONDITIONAL( WITH_OPENGL, test -n "$GL_FLAGS")
> > AM_CONDITIONAL( WITH_OPENGL, test -n "$GL_LIBS")
> The WITH_OPENGL's in these AM_CONDITIONALS are strings autoconf
> internally uses to set up its magic.
>
> > if test x"$WITH_OPENGL" = xtrue; then
> Here, you expect WITH_OPENGL to be a shell variable.
>
> > AC_MSG_RESULT( OpenGL)
> > else
> > AC_MSG_RESULT( NO OpenGL )
> > fi
> >
> > I suppose it is my inexperience, I have read autoconf and automake
> > manuals and still no solution.
> Have a look into your configure and search for WITH_OPENGL.
>
> AFAIS, you are expecting WITH_OPENGL to be a shell-variable while
> autoconf uses it as a string.
>
> > Another minor question. Why do we add "x" in:
> > if test x"$WITH_OPENGL" = xtrue; then
>
> Cf. The "Limitations of Builtins" chapter in info autoconf
>
> Ralf
>
>
>
>
