ncurses: add configure patch

overlay/default.nix

@@ -19,6 +19,13 @@ let
     overrideTargetAttrs drv
     (attrs: { patches = attrs.patches or [ ] ++ [ patch ]; });
 
+  addHostPatches = if hostPlatform.isGenode then
+    drv: patches:
+    overrideTargetAttrs drv
+    (attrs: { patches = attrs.patches or [ ] ++ patches; })
+  else
+    drv: _: drv;
+
 in {
 
   bash = overrideTargetAttrs bash (attrs: {
@@ -101,9 +108,12 @@ in {
     buildLlvmTools = buildPackages.llvmPackages_11.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_11.libraries;
     inherit (final.genodePackages.genodeSources) genodeBase;
-  } // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
-    stdenv = gcc7Stdenv;
-  });
+  } // stdenv.lib.optionalAttrs
+    (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
+      stdenv = gcc7Stdenv;
+    });
+
+  ncurses = addHostPatches ncurses [ ./ncurses/genode.patch ];
 
   openssl = overrideHostAttrs openssl (attrs: {
     outputs = [ "out" ]

overlay/ncurses/genode.patch

@@ -0,0 +1,12 @@
+diff -ur a/configure b/configure
+--- a/configure	2020-02-12 15:20:22.000000000 +0530
++++ b/configure	2020-05-28 23:24:05.461176897 +0530
+@@ -6012,7 +6012,7 @@
+ 		MK_SHARED_LIB='${LD} ${LDFLAGS} -Bshareable -o $@'
+ 		test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=rel
+ 		;;
+-	(dragonfly*|freebsd*)
++	(dragonfly*|freebsd*|genode*)
+ 		CC_SHARED_OPTS="$CC_SHARED_OPTS -DPIC"
+ 		if test "$DFT_LWR_MODEL" = "shared" && test "$cf_cv_enable_rpath" = yes ; then
+ 			LOCAL_LDFLAGS="${cf_ld_rpath_opt}\$(LOCAL_LIBDIR)"