Configure: support a few more "make variables" defaulting from env

CFLAGS, CXXFLAGS, CPPFLAGS, LDFLAGS, and LDLIBS

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8325)

diff --git a/Configure b/Configure
index e2f9865f919a40c8356d0d04c15b598f750c9c0c..0e0e115e4334cca6b71656964a5ee1a72209c5e9 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -554,18 +554,18 @@ my %user = (
     AS          => undef,
     ASFLAGS     => [],
     CC          => env('CC'),
-    CFLAGS      => [],
+    CFLAGS      => [ env('CFLAGS') || () ],
     CXX         => env('CXX'),
-    CXXFLAGS    => [],
+    CXXFLAGS    => [ env('CXXFLAGS') || () ],
     CPP         => undef,
-    CPPFLAGS    => [],  # -D, -I, -Wp,
+    CPPFLAGS    => [ env('CPPFLAGS') || () ],  # -D, -I, -Wp,
     CPPDEFINES  => [],  # Alternative for -D
     CPPINCLUDES => [],  # Alternative for -I
     CROSS_COMPILE => env('CROSS_COMPILE'),
     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
     LD          => undef,
-    LDFLAGS     => [],  # -L, -Wl,
-    LDLIBS      => [],  # -l
+    LDFLAGS     => [ env('LDFLAGS') || () ],  # -L, -Wl,
+    LDLIBS      => [ env('LDLIBS') || () ],  # -l
     MT          => undef,
     MTFLAGS     => [],
     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),