Link flags for aCC on HP-UX

[Ludovic Courtès]

Hi,

I recently ran into trouble while trying to build C++ libraries and
programs using aCC A.03.37 on HP-UX B.11.11 with Libtool 1.5.6.  aCC
allows to use a C++ library that conforms to the C++ standard instead of
a pre-standard implementation by adding the `-AA' flag on both the
compilation command line _and_ linker's command line.  However, Libtool
removes (almost) any user-specified LDFLAGS as evidenced by the
generated `libtool' script:

  archive_cmds="\$CC -b \${wl}+h \${wl}\$soname \${wl}+b \${wl}\$install_libdir 
-o \$lib \$predep_objects \$libobjs \$deplibs \$postdep_objects 
\$compiler_flags"

Programs and libraries compiled with `-AA' and linked without it do link
successfully but won't run (they just abort() before `main' is called,
see [0] for details).  Note that the same applies to the `-mt' flag
which is used for multi-threaded programs.

The patch below against `ltmain.sh' fixes the problem for me.  However,
I'm not sure that adding these flags to `compiler_flags' is the right
way to do this; also, looking at `$host' in order to guess whether aCC
is being used isn't "clean" but I couldn't find any other way to do that
and it probably doesn't harm much anyway.

Thanks,
Ludovic.

[0] 
http://h21007.www2.hp.com/dspp/ml/showArchiveMessage/1,,24!04!03!0011,00.html


--- /usr/local/share/libtool/ltmain.sh  Fri Jul 30 09:29:01 2004
+++ /net/dali/matisse/DiSCo-3.1/ltmain.sh       Wed Aug 11 11:36:02 2004
@@ -1367,7 +1367,16 @@
        ;;
 
      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe)
-       deplibs="$deplibs $arg"
+        case "$host" in
+         *-hpux*)
+           # When HP's aCC C++ compiler is used (on HP-UX), the `-AA'
+           # and `-mt' flags also need to be passed on the
+           # command-line that links shared libraries and
+           # executables.
+           compiler_flags="$compiler_flags $arg";;
+          *)
+           deplibs="$deplibs $arg";;
+       esac
        continue
        ;;
 
@@ -1399,6 +1408,15 @@
         continue
         ;;
 
+      -AA)
+        # When HP's aCC C++ compiler is used (on HP-UX), the `-AA' and `-mt'
+       # flags also need to be passed on the command-line that links shared
+       # libraries and executables.
+       case "$host" in
+         *-hpux*) compiler_flags="$compiler_flags $arg";;
+       esac
+       ;;
+
       -shrext)
        prev=shrext
        continue