Make it possible to build even if dependency files can't be generated

If the local system doesn't have GNU C or clang, and not even
makedepend, the build will stop because the call of 'makedepend'
fails.  This changes so the build won't stop because of such failure.
The result will be empty .d files, and that's ok.

Reviewed-by: Rich Salz <rsalz@openssl.org>

diff --git a/Configurations/unix-Makefile.tmpl b/Configurations/unix-Makefile.tmpl
index 339c733ba18e0962f2d691f8a2c844faae6ba631..2dbfaaa196a907e2d164b96388b46a6474e613d9 100644 (file)
--- a/Configurations/unix-Makefile.tmpl
+++ b/Configurations/unix-Makefile.tmpl
@@ -856,7 +856,7 @@ configdata.pm: {- $config{build_file_template} -} $(SRCDIR)/Configure $(SRCDIR)/
           return <<"EOF";
 $obj$depext: $deps
        rm -f \$\@.tmp; touch \$\@.tmp
-       \$(MAKEDEPEND) -f\$\@.tmp -o"|$obj" -- \$(CFLAGS) $ecflags$incs -- $srcs \\
+       -\$(MAKEDEPEND) -f\$\@.tmp -o"|$obj" -- \$(CFLAGS) $ecflags$incs -- $srcs \\
            2>/dev/null
        sed -e 's/^.*|//' -e 's/ \\/\\(\\\\.\\|[^ ]\\)*//g' -e '/: *\$\$/d' -e '/^\\(#.*\\| *\\)\$\$/d' \$\@.tmp > \$\@
        rm \$\@.tmp