ncurses: add add NCURSES_STATIC to Cflags.private in the .pc files

So that pkgconf users will automatically get it if they pass --static

ncurses/PKGBUILD

@@ -3,7 +3,7 @@
 pkgbase=ncurses
 pkgname=('ncurses' 'ncurses-devel')
 pkgver=6.3
-pkgrel=2
+pkgrel=3
 pkgdesc="System V Release 4.0 curses emulation library"
 arch=('i686' 'x86_64')
 url="https://www.gnu.org/software/ncurses/"
@@ -11,10 +11,12 @@ license=('MIT')
 makedepends=('autotools' 'gcc')
 source=(#"${pkgbase}-${pkgver}.tar.gz"::"https://invisible-mirror.net/archives/ncurses/current/${pkgbase}-${_basever}-${_date}.tgz"
         https://ftp.gnu.org/pub/gnu/ncurses/ncurses-${pkgver}.tar.gz{,.sig}
-        "ncurses-6.3-pkgconfig.patch")
+        "ncurses-6.3-pkgconfig.patch"
+        "ncurses-6.3-cflags-private.patch")
 sha256sums=('97fc51ac2b085d4cde31ef4d2c3122c21abc217e9090a43a30fc5ec21684e059'
             'SKIP'
-            'b8544a607dfbeffaba2b087f03b57ed1fa81286afca25df65f61b04b5f3b3738')
+            'b8544a607dfbeffaba2b087f03b57ed1fa81286afca25df65f61b04b5f3b3738'
+            '3107029dfb807e338d34641d78329cd6725c58e6b873352621f4b9611a8380bf')
 validpgpkeys=('19882D92DDA4C400C22C0D56CC2AF4472167BE03')
 
 prepare() {
@@ -23,6 +25,8 @@ prepare() {
   # do not leak build-time LDFLAGS into the pkgconfig files:
   # https://bugs.archlinux.org/task/68523
   patch -p1 -i ${srcdir}/ncurses-6.3-pkgconfig.patch
+
+  patch -p1 -i ${srcdir}/ncurses-6.3-cflags-private.patch
 }
 
 build() {

ncurses/ncurses-6.3-cflags-private.patch

@@ -0,0 +1,10 @@
+--- ncurses-6.3/misc/gen-pkgconfig.in.orig	2022-04-29 20:19:42.668758200 +0200
++++ ncurses-6.3/misc/gen-pkgconfig.in	2022-04-29 20:27:10.636256800 +0200
+@@ -238,6 +238,7 @@
+ Libs: $lib_flags $LIBS
+ Libs.private: @LIBS@ $main_libs
+ Cflags: $CFLAGS
++Cflags.private: -DNCURSES_STATIC
+ EOF
+ 
+ done