Re: [Flightgear-devel] Problems Compiling clouds3d
Paul Deppe wrote: Paul Deppe wrote: When compiling CVS simgear/sky/clouds3d I am getting numerous warnings: WIN32 redefined, initialization from int to float, ... is implicitly a typename, and many others, and finally the following error when compiling SkyTextureState.cpp: SkyTextureState.cpp:94: `glActiveTextureARB' undeclared (first use this function) Erik wrote: I know there is a fix in SimGear to include glext.h for windows platforms. Maybe one of the ifdefs fails (because a version number changed or something like that)? Erik, Here are some of the references to EXTGL_NEEDED in the SimGear root directory: -- configure.ac: AM_CONDITIONAL(EXTGL_NEEDED, test x$ac_cv_header_windows_h = xyes) It looks like this is for windows/MSVC compilers only, but Norman might know more about it. extgl.h is #include'd by SkyTextureState.cpp via SkyTextureState.hpp via SkyContext.hpp. It looks like all the ifdef's are working properly. So I am stumped here - why can't the compiler see the declaration of glActiveTextureARB() when compiling SkyTextureState.cpp? I'm missing something. Could it be you are linkijg against a wrong OpenGL library? It looks like glActiveTextureARB is an OpenGl 1.3 extension, on the other hand, I have included a (compile time) check to see if glActiveTextureARB is actually supported by the system and neglect this code otherwise. Could you check if GL_ARB_multitexture is defined in your gl.h header file? Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Problems Compiling clouds3d
Paul Deppe writes: When compiling CVS simgear/sky/clouds3d I am getting numerous warnings: WIN32 redefined, initialization from int to float, ... is implicitly a typename, and many others, and finally the following error when compiling SkyTextureState.cpp: SkyTextureState.cpp:94: `glActiveTextureARB' undeclared (first use this function) I think the problem stems from GL/gl.h being included before extgl.h Note GL/glu.h and GL/glut.h both include GL/gl.h so extgl.h must precede these also Norman ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
RE: [Flightgear-devel] Problems Compiling clouds3d
I think the problem stems from GL/gl.h being included before extgl.h Note GL/glu.h and GL/glut.h both include GL/gl.h so extgl.h must precede these also Norman I inserted the following in SkyTexture.hpp at line 36: #ifdef WIN32 # include extgl.h #endif ... and it worked - thanks. But I still wonder if there is some configuration issue with my system because no one else seems to be getting this error. I'll also try this fix with plib/examples/src/ssg/water/water.cxx, which also has the same compile error. Also... Could it be you are linking against a wrong OpenGL library? It looks like glActiveTextureARB is an OpenGl 1.3 extension, on the other hand, I have included a (compile time) check to see if glActiveTextureARB is actually supported by the system and neglect this code otherwise. Could you check if GL_ARB_multitexture is defined in your gl.h header file? Erik I found that Cygwin installs TWO copies of gl.h: opengl package installs: /usr/include/GL/gl.h (which declares glActiveTextureARB) and w32api package installs: /usr/include/w32api/GL/gl.h, (which does not). The w32api gl.h is dated later but does not declare glActiveTextureARB. Aha... it works _without_ the above patch when I hide /usr/include/w32api/GL! Is this a Cygwin bug? Paul Paul R. Deppe Veridian Engineering (formerly Calspan) Flight Aerospace Research Group 150 North Airport Drive Buffalo, NY 14225 (716) 631-6898 (716) 631-6990 FAX [EMAIL PROTECTED] ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Problems Compiling clouds3d
Paul Deppe writes: I think the problem stems from GL/gl.h being included before extgl.h Note GL/glu.h and GL/glut.h both include GL/gl.h so extgl.h must precede these also Norman I inserted the following in SkyTexture.hpp at line 36: #ifdef WIN32 # include extgl.h #endif ... and it worked - thanks. But I still wonder if there is some configuration issue with my system because no one else seems to be getting this error. FWIW - I did not get this error because I do not use the Cygwin OpenGL headers see my other post on this subject Cheers Norman ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
[Flightgear-devel] Problems Compiling clouds3d
Gents, When compiling CVS simgear/sky/clouds3d I am getting numerous warnings: WIN32 redefined, initialization from int to float, ... is implicitly a typename, and many others, and finally the following error when compiling SkyTextureState.cpp: if g++ -DHAVE_CONFIG_H -I. -I. -I../../../simgear -I../../..-O2 -D_REENTRAN T -MT SkyTextureState.o -MD -MP -MF .deps/SkyTextureState.Tpo \ -c -o SkyTextureState.o `test -f 'SkyTextureState.cpp' || echo './'`SkyTexture State.cpp; \ then mv .deps/SkyTextureState.Tpo .deps/SkyTextureState.Po; \ else rm -f .deps/SkyTextureState.Tpo; exit 1; \ fi SkyTextureState.cpp: In member function `SKYRESULT SkyTextureState::Activate()': SkyTextureState.cpp:94: `glActiveTextureARB' undeclared (first use this function) SkyTextureState.cpp:94: (Each undeclared identifier is reported only once for each function it appears in.) make[4]: *** [SkyTextureState.o] Error 1 Are these warnings a feature of this module or am I missing some C++ flag? I'm using latest Cygwin/gcc 3.2. Thanks, Paul Paul R. Deppe Veridian Engineering (formerly Calspan) Flight Aerospace Research Group 150 North Airport Drive Buffalo, NY 14225 (716) 631-6898 (716) 631-6990 FAX [EMAIL PROTECTED] ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
RE: [Flightgear-devel] Problems Compiling clouds3d
Paul Deppe wrote: When compiling CVS simgear/sky/clouds3d I am getting numerous warnings: WIN32 redefined, initialization from int to float, ... is implicitly a typename, and many others, and finally the following error when compiling SkyTextureState.cpp: SkyTextureState.cpp:94: `glActiveTextureARB' undeclared (first use this function) Erik wrote: I know there is a fix in SimGear to include glext.h for windows platforms. Maybe one of the ifdefs fails (because a version number changed or something like that)? Erik, Here are some of the references to EXTGL_NEEDED in the SimGear root directory: -- configure.ac: AM_CONDITIONAL(EXTGL_NEEDED, test x$ac_cv_header_windows_h = xyes) -- configure: if test x$ac_cv_header_windows_h = xyes; then EXTGL_NEEDED_TRUE= EXTGL_NEEDED_FALSE='#' else EXTGL_NEEDED_TRUE='#' EXTGL_NEEDED_FALSE= fi -- config.log: EXTGL_NEEDED_FALSE='#' EXTGL_NEEDED_TRUE='' -- Makefile: EXTGL_NEEDED_FALSE = # EXTGL_NEEDED_TRUE = And in SimGear/simgear/sky/clouds3d/Makefile: EXTGL_SOURCE = extgl.c extgl.h #EXTGL_SOURCE = libsgclouds3d_a_SOURCES = \ $(EXTGL_SOURCE) \ vec3fv.cpp vec3fv.hpp vec3f.hpp vec4f.hpp vec2f.hpp \ ... etc. extgl.h is #include'd by SkyTextureState.cpp via SkyTextureState.hpp via SkyContext.hpp. It looks like all the ifdef's are working properly. So I am stumped here - why can't the compiler see the declaration of glActiveTextureARB() when compiling SkyTextureState.cpp? I'm missing something. Paul Paul R. Deppe Veridian Engineering (formerly Calspan) Flight Aerospace Research Group 150 North Airport Drive Buffalo, NY 14225 (716) 631-6898 (716) 631-6990 FAX [EMAIL PROTECTED] ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
