fix typo that put too many include paths for most people

[lyx.git] / config / depcomp

diff --git a/config/depcomp b/config/depcomp
index 65899658ee7fe8de71d8f8fbcd869440f173ed5d..f6f5ad5e28b4ad06f02a2c6734fa19e15ffa7445 100755 (executable)
--- a/config/depcomp
+++ b/config/depcomp
@@ -198,14 +198,28 @@ aix)
   ;;
 
 tru64)
-   # The Tru64 AIX compiler uses -MD to generate dependencies as a side
+   # The Tru64 DEC compiler uses -MD to generate dependencies as a side
    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
    # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put 
    # dependencies in `foo.d' instead, so we check for that too.
    # Subdirectories are respected.
 
-   tmpdepfile1="$object.d"
-   tmpdepfile2=`echo "$object" | sed -e 's/.o$/.d/'` 
+   # This is incorrect as it assumes that $object has a .o extension when
+   # it could well have a .lo one.
+   #tmpdepfile1="$object.d"
+   # This is just bad sed. The /.o$/ should be /\.o/, nonwithstanding the
+   # flawed logic, described above.
+   #tmpdepfile2=`echo "$object" | sed -e 's/.o$/.d/'`
+
+   # The correct way:
+   # Strip the (.o, or .lo) extension from $object
+   # (Same piece of sed magic as used for the AIX compiler above.)
+   stripped=`echo "$object" | sed -e 's,^.*/,,' -e 's/\(.*\)\..*$/\1/'`
+   # Tru64 compiler dependency file.
+   tmpdepfile1="$stripped.o.d"
+   # Compaq CCC V6.2 dependency file.
+   tmpdepfile2="$stripped.d"
+
    if test "$libtool" = yes; then
       "$@" -Wc,-MD
    else