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use AC_DEFINE instead of hardcoding preprocessor flags

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Now that all source files include config.h, we can use AC_DEFINE
to enable/disable optional features (opengl, cegui). This is
cleaner than directly appending -Dxxx directives to the preprocessor
flags. This also guarantees that everything will be appropriately
rebuilt when using the same source tree to build first with opengl
support and then without (the config.h timestamp will change,
triggering a rebuild of the files including it)
This commit is contained in:
Christophe Fergeau 2011-04-20 17:52:23 +02:00
parent 7e30572ab1
commit c1b7ecac3f
1 changed files with 4 additions and 3 deletions
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7
configure.ac
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@ -173,13 +173,13 @@ if test "x$enable_gui" = "xyes"; then
[
AC_SUBST(CEGUI06_CFLAGS)
AC_SUBST(CEGUI06_LIBS)
CEGUI06_CFLAGS+="-DUSE_GUI"
AC_DEFINE([USE_GUI], [1], [Define to build with CEGUI support])
],
[
PKG_CHECK_MODULES(CEGUI, CEGUI >= 0.6.0 CEGUI < 0.7.0)
AC_SUBST(CEGUI_CFLAGS)
AC_SUBST(CEGUI_LIBS)
CEGUI_CFLAGS+="-DUSE_GUI"
AC_DEFINE([USE_GUI], [1], [Define to build with CEGUI support])
])
fi
@ -232,7 +232,8 @@ SPICE_REQUIRES+=" openssl"
if test "x$enable_opengl" = "xyes"; then
AC_CHECK_LIB(GL, glBlendFunc, GL_LIBS="$GL_LIBS -lGL", enable_opengl=no)
AC_CHECK_LIB(GLU, gluSphere, GL_LIBS="$GL_LIBS -lGLU", enable_opengl=no)
GL_CFLAGS="-DGL_GLEXT_PROTOTYPES -DUSE_OGL"
AC_DEFINE([USE_OGL], [1], [Define to build with OpenGL support])
AC_DEFINE([GL_GLEXT_PROTOTYPES], [], [Enable GLExt prototypes])
if test "x$enable_opengl" = "xno"; then
AC_MSG_ERROR([GL libraries not available])