bug#12333: 24.2.50; clang cannot compile src/xterm.c on Mac OS X 10.6.8

[Peter Dyballa]

Hello!

Having configured as

In GNU Emacs 24.2.50.1 (i386-apple-darwin10.8.0, X toolkit, Xaw3d scroll bars)
of 2012-09-02 on Sumac.local
Bzr revision: 109853 eggert@cs.ucla.edu-20120902071010-fd19rvrjk5hqaro2
Configured using:
`configure '--build=x86_64-apple-darwin10.8.0'
'--host=i386-apple-darwin10.8.0' '--target=i386-apple-darwin10.8.0'
'--with-wide-int' '--without-pop' '--without-sound' '--without-gpm'
'--without-dbus' '--without-selinux' '--with-x-toolkit=athena'
'--disable-ns-self-contained' '--without-xpm' '--without-jpeg'
'--without-tiff' '--without-gif' '--without-png' '--without-rsvg'
'--x-libraries=/usr/X11/lib' '--x-includes=/usr/X11/include'
'--enable-locallisppath=/Library/Application
Support/Emacs/calendar24:/Library/Application Support/Emacs' 'CFLAGS=-g
-H -pipe -fPIC -fno-common -O0 -march=prescott -mtune=prescott -m32
-fomit-frame-pointer -msse3 -foptimize-register-move -ftree-vectorize'
'CPPFLAGS=-I/sw/include' 'LDFLAGS=-L/sw/lib -m32 -Wl,-dead_strip_dylibs
-Wl,-bind_at_load -Wl,-t' 'CC=clang' 'CXX=clang++'
'PKG_CONFIG_PATH=/sw/lib/xft2/lib/pkgconfig:/sw/share/pkgconfig:/sw/lib/pkgconfig:/usr/X11/lib\
/pkgconfig:/usr/X11/share/pkgconfig:/usr/lib/pkgconfig'
'build_alias=x86_64-apple-darwin10.8.0'
'host_alias=i386-apple-darwin10.8.0'
'target_alias=i386-apple-darwin10.8.0''

the make process ends with:

        clang -c -I/sw/include -Demacs  -I. -I.../emacs-24.2.50/src -I../lib 
-I.../emacs-24.2.50/src/../lib   -I/usr/X11/include -I/sw/include 
-I/sw/include/freetype2 -I/usr/X11/include -I/usr/X11R6/include    
-I/sw/include/ImageMagick -fopenmp -I/sw/include/libxml2 -I/sw/include   
-I/sw/include/freetype2 -I/sw/include -I/sw/include   -I/sw/include/freetype2 
-I/sw/include -I/sw/include   -MMD -MF deps/xterm.d -MP  -I/sw/include     -g 
-H -pipe -fPIC -fno-common -O0 -march=prescott -mtune=prescott -m32 
-fomit-frame-pointer -msse3 -foptimize-register-move -ftree-vectorize xterm.c
        clang: warning: argument unused during compilation: '-fopenmp'
        clang: warning: argument unused during compilation: 
'-foptimize-register-move'
        clang: warning: argument unused during compilation: '-ftree-vectorize'
        In file included from xterm.c:30:
        ./lisp.h:2961:39: warning: unknown attribute 'externally_visible' 
ignored [-Wunknown-attributes]
        extern void debug_print (Lisp_Object) EXTERNALLY_VISIBLE;
                                              ^
        In file included from xterm.c:23:
        In file included from ./config.h:1702:
        ./conf_post.h:193:43: note: instantiated from:
        #define EXTERNALLY_VISIBLE __attribute__((externally_visible))
                                                  ^
        xterm.c:8316:3: warning: implicit declaration of function 
'x_wm_set_size_hint' is invalid in C99
              [-Wimplicit-function-declaration]
          x_wm_set_size_hint (f, (long) 0, 0);
          ^
        xterm.c:8577:15: warning: enumeration value 'FULLSCREEN_WAIT' not 
handled in switch [-Wswitch-enum]
              switch (f->want_fullscreen)
                      ^
        xterm.c:8687:15: warning: enumeration values 'FULLSCREEN_NONE' and 
'FULLSCREEN_WAIT' not handled in
              switch [-Wswitch-enum]
              switch (f->want_fullscreen)
                      ^
        xterm.c:9258:2: warning: expression result unused [-Wunused-value]
                FRAME_SAMPLE_VISIBILITY (f);
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~
        In file included from xterm.c:62:
        ./frame.h:922:29: note: instantiated from:
           SET_FRAME_GARBAGED (f) : 0, \
                                    ^
        xterm.c:9355:3: warning: expression result unused [-Wunused-value]
          FRAME_SAMPLE_VISIBILITY (f);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
        In file included from xterm.c:62:
        ./frame.h:922:29: note: instantiated from:
           SET_FRAME_GARBAGED (f) : 0, \
                                    ^
        xterm.c:9610:1: error: conflicting types for 'x_wm_set_size_hint'
        x_wm_set_size_hint (struct frame *f, long flags, int user_position)
        ^
        xterm.c:8316:3: note: previous implicit declaration is here
          x_wm_set_size_hint (f, (long) 0, 0);
          ^
        6 warnings and 1 error generated.
        make[1]: *** [xterm.o] Error 1

Making clang produce only pre-compiled output (with -E -dD) I cannot see a 
declaration. For use with GTK there seems to exist one in src/gtkutil.h, line 
#153:

        extern void x_wm_set_size_hint (FRAME_PTR f,
                                        long flags,
                                        int user_position);



--
Greetings

  Pete

The light at the end of the tunnel has been turned off due to budget cuts.