build/pkgs/openssl/spkg-configure.m4: Also require openssl if curl needs to be built

Author: Matthias Koeppe

build/pkgs/openssl/spkg-configure.m4

@@ -56,9 +56,10 @@ On Cygwin, openssl must be installed as a system package. This is an error."])
                          ])
 ], [dnl REQUIRED-CHECK
   AC_REQUIRE([SAGE_SPKG_CONFIGURE_PYTHON3])
-  dnl openssl is a dependency only of python3; so if we use system python3,
+  AC_REQUIRE([SAGE_SPKG_CONFIGURE_CURL])
+  dnl openssl is a dependency only of python3 and curl; so if we use system python3 and curl,
   dnl we do not require it. (In particular, we do not need a specific version.)
-  AS_IF([test x$sage_spkg_install_python3 = xno], [
+  AS_IF([test x$sage_spkg_install_python3 = xno -a x$sage_spkg_install_curl = xno], [
     sage_require_openssl=no
   ])
 ])