Unix build: have the makedepend and cc actions in one recipe

In the case of using an independent makedepend, we had split that into
two separate recipes, one depending on the other.  However, there are
cases where the makedepend recipe was always trying, but doesn't
update the time stamp of the .d file because there are no actual
changes, and thereby causing constant updates of the object files.

This change makes one recipe that takes care of both makedepend och
cc, thereby avoiding these extra updates.

Reviewed-by: Andy Polyakov <appro@openssl.org>

diff --git a/Configurations/unix-Makefile.tmpl b/Configurations/unix-Makefile.tmpl
index 608c20417f3a4ead966d9ec927e9ef2a053cf324..1392295607aa04985c6f3a63fb7e4df57f1be46e 100644 (file)
--- a/Configurations/unix-Makefile.tmpl
+++ b/Configurations/unix-Makefile.tmpl
@@ -944,38 +944,35 @@ EOF
                       dso => '$(DSO_CFLAGS)',
                       bin => '$(BIN_CFLAGS)' } -> {$args{intent}};
       my $makedepprog = $config{makedepprog};
-      my $recipe = "";
-      if (!$disabled{makedepend} && $makedepprog =~ /\/makedepend/) {
+      my $recipe = <<"EOF";
+$obj$objext: $deps
+EOF
+      if (!$disabled{makedepend} && $makedepprog !~ /\/makedepend/) {
           $recipe .= <<"EOF";
-$obj$depext: $deps
-       -\$(MAKEDEPEND) -f- -o"|$obj$objext" -- $incs \$(CFLAGS) $ecflags -- $srcs \\
-           >\$\@.tmp 2>/dev/null
-       -\$(PERL) -i -pe 's/^.*\\|//; s/ \\/(\\\\.|[^ ])*//; \$\$_ = undef if (/: *\$\$/ || /^(#.*| *)\$\$/); \$\$_.="\\n" unless !defined(\$\$_) or /\\R\$\$/g;' \$\@.tmp
-       \@if cmp \$\@.tmp \$\@ > /dev/null 2> /dev/null; then \\
-               rm -f \$\@.tmp; \\
+       \$(CC) $incs \$(CFLAGS) $ecflags -MMD -MF $obj$depext.tmp -MT \$\@ -c -o \$\@ $srcs
+       \@touch $obj$depext.tmp
+       \@if cmp $obj$depext.tmp $obj$depext > /dev/null 2> /dev/null; then \\
+               rm -f $obj$depext.tmp; \\
        else \\
-               mv \$\@.tmp \$\@; \\
+               mv $obj$depext.tmp $obj$depext; \\
        fi
 EOF
-          $deps = $obj.$depext;
-      }
-      if ($disabled{makedepend} || $makedepprog =~ /\/makedepend/) {
+      } else {
           $recipe .= <<"EOF";
-$obj$objext: $deps
        \$(CC) $incs \$(CFLAGS) $ecflags -c -o \$\@ $srcs
 EOF
-      }
-      if (!$disabled{makedepend} && $makedepprog !~ /\/makedepend/) {
-          $recipe .= <<"EOF";
-$obj$objext: $deps
-       \$(CC) $incs \$(CFLAGS) $ecflags -MMD -MF $obj$depext.tmp -MT \$\@ -c -o \$\@ $srcs
-       \@touch $obj$depext.tmp
+          if (!$disabled{makedepend} && $makedepprog =~ /\/makedepend/) {
+              $recipe .= <<"EOF";
+       -\$(MAKEDEPEND) -f- -o"|\$\@" -- $incs \$(CFLAGS) $ecflags -- $srcs \\
+           >$obj$depext.tmp 2>/dev/null
+       -\$(PERL) -i -pe 's/^.*\\|//; s/ \\/(\\\\.|[^ ])*//; \$\$_ = undef if (/: *\$\$/ || /^(#.*| *)\$\$/); \$\$_.="\\n" unless !defined(\$\$_) or /\\R\$\$/g;' $obj$depext.tmp
        \@if cmp $obj$depext.tmp $obj$depext > /dev/null 2> /dev/null; then \\
                rm -f $obj$depext.tmp; \\
        else \\
                mv $obj$depext.tmp $obj$depext; \\
        fi
 EOF
+          }
       }
       return $recipe;
   }