Is rmkdepend incompatible with gcc's -isysroot?


I wanted to cross-compile ROOT for OS X 10.4 on an OS X 10.5 machine, so I passed “-isysroot /Developer/SDKs/MacOSX10.4u.sdk” to EXTRA_CFLAGS and EXTRA_CXXFLAGS. rmkdepend doesn’t like this:

Building precompiled header…
bin/rmkdepend -R -fbase/src/precompile.d.tmp -Y -w 1000 – -pipe -W -Wall -Woverloaded-virtual -fsigned-char -fno-common -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -fvisibility-inlines-hidden -DUSEPCH -D__cplusplus – include/precompile.h
bin/rmkdepend: error: failed to read /Developer/SDKs/MacOSX10.4u.sdk
make: *** [include/precompile.h.gch] Error 1

the SDK is certainly readable:

ls -l /Developer/SDKs
total 0
drwxr-xr-x 7 root wheel 238 Sep 23 19:07 MacOSX10.4u.sdk
drwxr-xr-x 7 root wheel 238 Oct 12 00:23 MacOSX10.5.sdk
drwxrwxr-x 4 root wheel 136 Nov 27 10:50 usr

so I’m not sure what recourse I might have here. Best, Adam


rmkdepend doesn’t know how to ignore isysroot which is what it should be doing. You can add it to OPT instead of adding it to C[XX]FLAGS - OPT is not passed to rmkdepend.

Cheers, Axel.

Hi Axel,

Thanks for the tip. This seems to work well, but there are a couple of “gotchas”:

-isysroot is not used when compiling dictionary source code
-isysroot is not used when compiling builtin_* libraries and xrootd (but that’s expected, I guess)

Regards, Adam


you can add it to $(NOOPT) so it gets used for the dictionaries, too. The external libs won’t pick it up, though, that’s correct.

Cheers, Axel.

Thanks again, Axel, this works fine for the dictionaries as you suggest. I can supply my own builds of the various external libraries, although ROOT currently seems configured to ignore any external libAfterImage:

# Currently our libAfterImage is completely out of sync with the official
# libAfterImage due to many new features, use always the builtin_afterimage
          #if test $asimage_version -gt 1003 ; then
          if test $asimage_version -gt 0 ; then
             result "WARNING: System libAfterImage is too new, using built-in"

Best, Adam


can you change in asimage/ ACC to be “g++ -isysroot /Developer/SDKs/MacOSX10.4u.sdk” ?

Cheers, Fons.