wesnoth: Fix build errors in latest oe

Avoid breaking on changes made elsewhere by not overwriting buildflags
conditionally

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

recipes-games/wesnoth/files/0003-Do-not-adjust-compiler-flags.patch

@@ -0,0 +1,63 @@
+From a87ebed70e1d50097bad3b118e513830bb33a3c2 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@gmail.com>
+Date: Wed, 16 Mar 2022 22:15:30 +0100
+Subject: [PATCH] Do not adjust compiler flags
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Just guesswork:
+Something ha changed elsewhere causing the if-condition pass as seen for broken
+build:
+
+CMake compiler flags set to »-Wall -Wextra -Werror... - long but missing includes
+
+Fixes build errors as:
+| <..>/wesnoth-1.16.2/src/color.hpp:17:10: fatal error: algorithm: No such file or directory
+| <..>/1.16.2-r0/wesnoth-1.16.2/src/tstring.hpp:18:10: fatal error: memory: No such file or directory
+
+Upstream-Status: Inappropriate Inappropriate [oe specific]
+
+Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
+---
+ CMakeLists.txt | 16 ++--------------
+ 1 file changed, 2 insertions(+), 14 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index aaf6923..04efa09 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -218,20 +218,8 @@ if(NOT WIN32)
+ 		set(COMPILER_FLAGS "${COMPILER_FLAGS} -fno-omit-frame-pointer -fno-optimize-sibling-calls")
+ 	endif()
+ 
+-### Set the final compiler flags.
+ 
+-	set(COMPILER_FLAGS "${COMPILER_FLAGS} ${CXX_FLAGS_USER}")
+-
+-	if(NOT "${CMAKE_CXX_FLAGS}" STREQUAL "${COMPILER_FLAGS}")
+-		MESSAGE(STATUS "CMake compiler flags set to »${COMPILER_FLAGS}«")
+-		set(CMAKE_CXX_FLAGS
+-			"${COMPILER_FLAGS}"
+-			CACHE
+-			STRING
+-			"Global flags used by the CXX compiler during all builds."
+-			FORCE
+-		)
+-	endif()
++# do not align compiler flag suggested by oe
+ 
+ # #
+ # Determine optimization level
+@@ -416,7 +404,7 @@ if(NOT WIN32)
+ # End setting profiler build options
+ # #
+ else()
+-	set(CMAKE_CXX_FLAGS "/W3 /WX /wd4503 /wd4351 /wd4250 /wd4244 /wd4267 /we4239 /wd4275 /EHsc /utf-8" CACHE STRING "Global flags used by the CXX compiler during all builds." FORCE)
++	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3 /WX /wd4503 /wd4351 /wd4250 /wd4244 /wd4267 /we4239 /wd4275 /EHsc /utf-8" CACHE STRING "Global flags used by the CXX compiler during all builds." FORCE)
+ 	add_definitions(-D_WIN32_WINNT=_WIN32_WINNT_WIN7 -D_CRT_SECURE_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS -DNOMINMAX)
+ 
+ 	set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG_LUA")
+-- 
+2.34.1
+

recipes-games/wesnoth/wesnoth_1.16.2.bb

@@ -12,6 +12,7 @@ SRC_URI = " \
     ${SOURCEFORGE_MIRROR}/project/${BPN}/${BPN}-${SHRT_VER}/${BP}/${BP}.tar.bz2 \
     file://0001-Find-sdl-CFLAGS-with-pkg-config-sdl-config-is-not-us.patch \
     file://0002-Do-not-do-the-ar-ranlib-configure-dance-it-won-t-wor.patch \
+    file://0003-Do-not-adjust-compiler-flags.patch \
 "
 
 SRC_URI[sha256sum] = "729fd0903a28af502240d08c0a27b9ff50e534677644b639d8fd33823a7a9799"
@@ -50,10 +51,6 @@ ALLOW_EMPTY:${PN}-all-campaigns = "1"
 ALLOW_EMPTY:${PN}-all = "1"
 
 do_configure:prepend() {
-	export HOST_SYS="${HOST_SYS}"
-	export BUILD_SYS="${BUILD_SYS}"
-	export STAGING_LIBDIR="${STAGING_LIBDIR}"
-	export STAGING_INCDIR="${STAGING_INCDIR}"
 	rm -f ${S}/cmake/FindBoost.cmake
 }