Perl: pass additional linker options to perl module.

Previously flags passed by --with-ld-opt were not used when building perl
module, which meant hardening flags provided by package build systems were not
applied.

auto/lib/perl/conf

@@ -28,8 +28,10 @@ if test -n "$NGX_PERL_VER"; then
         exit 1;
     fi
 
-    NGX_PERL_CFLAGS="$CFLAGS `$NGX_PERL -MExtUtils::Embed -e ccopts`"
     NGX_PM_CFLAGS=`$NGX_PERL -MExtUtils::Embed -e ccopts`
+    NGX_PM_LDFLAGS=`$NGX_PERL -MConfig -e 'print $Config{lddlflags}'`
+
+    NGX_PERL_CFLAGS="$CFLAGS `$NGX_PERL -MExtUtils::Embed -e ccopts`"
 
     # gcc 4.1/4.2 warn about unused values in pTHX_
     NGX_PERL_CFLAGS=`echo $NGX_PERL_CFLAGS \

auto/lib/perl/make

@@ -35,6 +35,7 @@ $NGX_OBJS/src/http/modules/perl/Makefile: \\
 
 	cd $NGX_OBJS/src/http/modules/perl \\
 		&& NGX_PM_CFLAGS="\$(NGX_PM_CFLAGS) -g $NGX_CC_OPT" \\
+			NGX_PM_LDFLAGS="$NGX_LD_OPT \$(NGX_PM_LDFLAGS)" \\
 			NGX_INCS="$CORE_INCS $NGX_OBJS $HTTP_INCS" \\
 			NGX_DEPS="\$(CORE_DEPS) \$(HTTP_DEPS)" \\
 		$NGX_PERL Makefile.PL \\

auto/make

@@ -31,6 +31,7 @@ END
 if test -n "$NGX_PERL_CFLAGS"; then
     echo NGX_PERL_CFLAGS = $NGX_PERL_CFLAGS                   >> $NGX_MAKEFILE
     echo NGX_PM_CFLAGS = $NGX_PM_CFLAGS                       >> $NGX_MAKEFILE
+    echo NGX_PM_LDFLAGS = $NGX_PM_LDFLAGS                     >> $NGX_MAKEFILE
 fi
 
 

src/http/modules/perl/Makefile.PL

@@ -16,6 +16,8 @@ WriteMakefile(
     CCFLAGS           => "$ENV{NGX_PM_CFLAGS}",
     OPTIMIZE          => '-O',
 
+    LDDLFLAGS         => "$ENV{NGX_PM_LDFLAGS}",
+
     INC               => join(" ", map {
                              m#^/# ? "-I $_" : "-I ../../../../../$_"
                          } (split /\s+/, $ENV{NGX_INCS})),