Hi,
I was recently working with an IBM system using the IBM XL C/C++
compiler and the dependency tracking did not work (style "none").
Enclosed is a patch for depcomp to use the gcc-like generation of
dependency files of recent IBM compilers.
Best regards,
Michael
--- build-aux/depcomp.orig 2012-03-03 13:17:37.278369000 +0100
+++ build-aux/depcomp 2012-03-03 13:18:20.624761000 +0100
@@ -102,6 +102,12 @@
depmode=msvc7
fi
+if test "$depmode" = xlc; then
+ # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
+ gccflag=-qmakedep=gcc,-MF
+ depmode=gcc
+fi
+
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
@@ -226,6 +232,13 @@
rm -f "$tmpdepfile"
;;
+xlc)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
