X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=aclocal.m4;h=35ddbdb3cc21962d57192a3bd516bb3741247d7d;hb=a99906e5272be7c6212327a32c83eac0a9b08b4b;hp=c46d48db28badbe8052da8ecc696c02010463a3c;hpb=36cef1ea7f7e2dd68063598cdc23c4d1456f38ca;p=ghc-hetmet.git

diff --git a/aclocal.m4 b/aclocal.m4
index c46d48d..35ddbdb 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -906,6 +906,18 @@ AC_SUBST([FopCmd])
 ])# FP_PROG_FOP
 
 
+# FP_PROG_HSTAGS
+# ----------------
+# Sets the output variable HstagsCmd to the full Haskell tags program path.
+# HstagsCmd is empty if no such program could be found.
+AC_DEFUN([FP_PROG_HSTAGS],
+[AC_PATH_PROG([HstagsCmd], [hasktags])
+if test -z "$HstagsCmd"; then
+  AC_MSG_WARN([cannot find hasktags in your PATH, you will not be able to build the tags])
+fi
+])# FP_PROG_HSTAGS
+
+
 # FP_PROG_GHC_PKG
 # ----------------
 # Try to find a ghc-pkg matching the ghc mentioned in the environment variable