Diagnose failures due to colons in directory names.

* Makefile.in (epaths-force): Don't allow ':' in directories whose
names go into a colon-separated path.
* configure.ac: Fail if submake fails.

Fixes: debbugs:17278

1 files changed, 8 insertions, 0 deletions

diff --git a/Makefile.in b/Makefile.in
index 7104ef82744..1a7acef0c5a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -297,6 +297,14 @@ removenullpaths=sed -e 's/^:*//' -e 's/:*$$//g' -e 's/::*/:/g'
 # to just letting configure generate epaths.h from epaths.in in a
 # similar way to how Makefile is made from Makefile.in.
 epaths-force:
+        @for dir in '$(abs_srcdir)' '$(lispdir)' '$(archlibdir)'; do \
+          case $$dir in \
+            *:*) \
+              echo >&2 "Build or installation directory '$$dir'"; \
+              echo >&2 "cannot contain ':'."; \
+              exit 1;; \
+          esac; \
+        done
         @(standardlisppath=`echo "${standardlisppath}" | ${removenullpaths}` ; \
           locallisppath=`echo "${locallisppath}" | ${removenullpaths}` ; \
           buildlisppath=`echo "${buildlisppath}" | ${removenullpaths}` ; \