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Asked: 2026-05-13T12:52:51+00:00

In my c/c++ files, there are multiple #define. As an example: #ifdef LIBVNCSERVER_HAVE_LIBZ /*

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In my c/c++ files, there are multiple #define. As an example:

#ifdef LIBVNCSERVER_HAVE_LIBZ
  /* some code */
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
  /* some more code */

Can you please tell me how can I modify my Makefile.in so that I have those #define in ALL files during compilation?

Thank you.

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1 Answer

  1. Editorial Team
    -DLIBVNCSERVER_HAVE_LIBZ -DLIBVNCSERVER_HAVE_LIBJPEG

    You could pass those in CPPFLAGS, 

    CPPFLAGS = -DLIBVNCSERVER_HAVE_LIBZ -DLIBVNCSERVER_HAVE_LIBJPEG

    or make new variable 

    CUSTOMDEFINES = -DLIBVNCSERVER_HAVE_LIBZ -DLIBVNCSERVER_HAVE_LIBJPEG

    and pass it to CPPFLAGS = -DEXISTINGFLAGS $(CUSTOMDEFINES)

    Those are finally will pass to gcc/g++ -D...

    $(CC) $(CPPFLAGS)
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