[LLVMdev] LLVM-gcc for Ada

Duncan Sands baldrick at free.fr
Tue Jun 2 01:54:43 PDT 2009

Hi Eric,

> I'm having problems building llvm-gcc for Ada, which may or may not be 
> similar to the trouble Andre was having recently.  I'm trying to build 
> it on Fedora 10 (32-bit), using the instructions on the web site.  The 
> make terminates with a gnatbind error:
> gcc -c -g -O2      -gnatpg -gnata -I- -I. -Iada 
> -I../../llvm-gcc-4.2/gcc/ada ../../llvm-gcc-4.2/gcc/ada/gnat1drv.adb -o 
> ada/gnat1drv.o
> gnatbind -C -I- -I. -Iada -I../../llvm-gcc-4.2/gcc/ada -o ada/b_gnat1.c 
> -n ada/gnat1drv.ali
> error: "s-imenne.adb" must be compiled
> error: ("/usr/lib/gcc/i386-redhat-linux/4.3.2/adalib/s-imenne.ali" is 
> obsolete and read-only)
> error: "s-imenne.adb" and "gnat1drv.adb" compiled with different 
> exception handling mechanisms
> make[2]: *** [ada/b_gnat1.c] Error 5
> make[2]: Leaving directory `/home/eric/llvm/llvm-gcc-4.2-objects/gcc'
> make[1]: *** [all-gcc] Error 2
> make[1]: Leaving directory `/home/eric/llvm/llvm-gcc-4.2-objects'
> make: *** [all] Error 2
> Any ideas how I can fix that?  Is this happening due to using the GCC 
> and Gnat 4.3 to build it?

yes, that's exactly the problem.

> I thought I could try installing an earlier 
> version of Fedora that has GCC 4.2, but it looks like they jumped from 
> 4.1 to 4.3.
> If there's not a simple fix, is there a Linux distro on which llvm-gcc 
> with Ada is known to build "out of the box"?

Why don't you install GNAT GPL 2007 (free download, easy to do) and
compile it using that?



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