mesa: make use of HAVE_FUNC_ATTRIBUTE_ALIAS macro

We must make sure that xserver has an equivalent one-line
change to its configure.ac as the glx/glapi headers get copied over.

Then again, xserver does _not_ seem to set HAVE_ALIAS to begin with so
one might want to look into that first.

Cc: Adam Jackson <ajax@redhat.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

4 files changed, 7 insertions, 13 deletions

diff --git a/src/glx/glxcmds.c b/src/glx/glxcmds.c
index 8980de3733a..7266b58652e 100644
--- a/src/glx/glxcmds.c
+++ b/src/glx/glxcmds.c
@@ -2664,7 +2664,7 @@ _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
  * \sa glXGetProcAddressARB
  */
 _GLX_PUBLIC void (*glXGetProcAddress(const GLubyte * procName)) (void)
-#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
+# ifdef HAVE_FUNC_ATTRIBUTE_ALIAS
 # if defined(USE_MGL_NAMESPACE)
    __attribute__ ((alias("mglXGetProcAddressARB")));
 # else
@@ -2674,7 +2674,7 @@ _GLX_PUBLIC void (*glXGetProcAddress(const GLubyte * procName)) (void)
 {
    return glXGetProcAddressARB(procName);
 }
-#endif /* __GNUC__ */
+#endif /* HAVE_FUNC_ATTRIBUTE_ALIA */
 
 
 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
diff --git a/src/glx/glxextensions.h b/src/glx/glxextensions.h
index 6a670063025..21ad02a44b4 100644
--- a/src/glx/glxextensions.h
+++ b/src/glx/glxextensions.h
@@ -281,7 +281,7 @@ typedef void (*PFNGLXDISABLEEXTENSIONPROC) (const char *name);
 
 /* GLX_ALIAS should be used for functions with a non-void return type.
    GLX_ALIAS_VOID is for functions with a void return type. */
-# if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
+# ifdef HAVE_FUNC_ATTRIBUTE_ALIAS
 /* GLX_ALIAS and GLX_ALIAS_VOID both expand to the macro GLX_ALIAS2. Using the
  * extra expansion means that the name mangling macros in glx_mangle.h will
  * apply before stringification, so the alias attribute will have a string like
@@ -300,7 +300,7 @@ typedef void (*PFNGLXDISABLEEXTENSIONPROC) (const char *name);
 #  define GLX_ALIAS_VOID(real_func, proto_args, args, aliased_func) \
    void  real_func  proto_args                                      \
    { aliased_func args ; }
-# endif /* __GNUC__ */
+# endif /* HAVE_FUNC_ATTRIBUTE_ALIAS */
 
 #ifdef __cplusplus
 }
diff --git a/src/mapi/glapi/gen/glX_proto_size.py b/src/mapi/glapi/gen/glX_proto_size.py
index 3a1c5540290..d9f95a31d87 100644
--- a/src/mapi/glapi/gen/glX_proto_size.py
+++ b/src/mapi/glapi/gen/glX_proto_size.py
@@ -330,10 +330,7 @@ class PrintGlxSizeStubs_c(PrintGlxSizeStubs_common):
         self.printFastcall()
         print ''
         print ''
-        print '#if defined(__CYGWIN__) || defined(__MINGW32__) || defined(GLX_USE_APPLEGL)'
-        print '#  undef HAVE_ALIAS'
-        print '#endif'
-        print '#ifdef HAVE_ALIAS'
+        print '#ifdef HAVE_FUNC_ATTRIBUTE_ALIAS'
         print '#  define ALIAS2(from,to) \\'
         print '    _X_INTERNAL PURE FASTCALL GLint __gl ## from ## _size( GLenum e ) \\'
         print '        __attribute__ ((alias( # to )));'
@@ -452,10 +449,7 @@ class PrintGlxReqSize_c(PrintGlxReqSize_common):
         print '#include "indirect_size.h"'
         print '#include "indirect_reqsize.h"'
         print ''
-        print '#if defined(__CYGWIN__) || defined(__MINGW32__)'
-        print '#  undef HAVE_ALIAS'
-        print '#endif'
-        print '#ifdef HAVE_ALIAS'
+        print '#ifdef HAVE_FUNC_ATTRIBUTE_ALIAS'
         print '#  define ALIAS2(from,to) \\'
         print '    GLint __glX ## from ## ReqSize( const GLbyte * pc, Bool swap, int reqlen ) \\'
         print '        __attribute__ ((alias( # to )));'
diff --git a/src/mapi/glapi/gen/gl_x86_asm.py b/src/mapi/glapi/gen/gl_x86_asm.py
index c0c7941ce10..50b09f56773 100644
--- a/src/mapi/glapi/gen/gl_x86_asm.py
+++ b/src/mapi/glapi/gen/gl_x86_asm.py
@@ -120,7 +120,7 @@ class PrintGenericStubs(gl_XML.gl_print_base):
         print '\tJMP(GL_OFFSET(off))'
         print '#endif'
         print ''
-        print '#ifdef HAVE_ALIAS'
+        print '#ifdef HAVE_FUNC_ATTRIBUTE_ALIAS'
         print '#  define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\'
         print '\t.globl\tGL_PREFIX(fn, fn_alt) ;\t\t\t\\'
         print '\t.set\tGL_PREFIX(fn, fn_alt), GL_PREFIX(alias, alias_alt)'