making gnupg work on AIX

[Louis Guillaume <lguillaume%berklee.edu@localhost>]

Two issues with gnupg on AIX:

 o We must configure with --disable-asm (have patch).
 o We must build WITHOUT `-On' in CFLAGS. (-O1 might work).

The latter causes a runtime error where decryption doesn't work.


To get gnupg to build on AIX I needed to patch the Makefile like this...


--- security/gnupg/Makefile.orig        2009-09-25 12:46:05.000000000 -0400
+++ security/gnupg/Makefile     2009-09-25 12:46:51.000000000 -0400
@@ -39,6 +39,10 @@
 CONFIGURE_ARGS+=       --disable-asm
 .endif

+.if ${OPSYS} == "AIX" && defined(ABI) && ${ABI} == 64
+CONFIGURE_ARGS+=       --disable-asm
+.endif
+
 # XXX: still needed?
 .if ${OPSYS} == "FreeBSD"
 SUBST_CLASSES+=            fixme


... otherwise the build fails like this...

Assembler:
_mpih-mul1.s: line 8: Only .llong should be used for relocatable 
expressions.
_mpih-mul1.s: line 8: Only .llong should be used for relocatable 
expressions.
gmake[2]: *** [mpih-mul1.o] Error 1
gmake[2]: Leaving directory 
`/usr/pkgobj/security/gnupg/work/gnupg-1.4.10/mpi'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/pkgobj/security/gnupg/work/gnupg-1.4.10'
gmake: *** [all] Error 2
*** Error code 2


... Can we get this into pkgsrc-2009Q3?

The next issue is that the runtime gpg must be built without 
optimization. So `-O3' and `-O2' cannot be in CFLAGS (haven't tested 
with `-O1').

This is cumbersome as I have to manually build gnupg with special CFLAGS 
each time. I have -O3 set in CFLAGS in mk.conf. Is it possible to 
override this at build time with some setting in the Makefile? Like a 
substitution?

Louis