pkg: Add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to cmake flags

This disable policy enforcement of newer cmake 4.1.2 on older cmake
projects. The flags can be removed once the upstream projects are
compatible with newer versions of cmake.

Co-authored-by: crasbe <[email protected]>

Author: maribu

pkg/ccn-lite/Makefile

@@ -27,9 +27,12 @@ $(BINDIR)/ccn-lite.a: $(PKG_BUILD_DIR)/lib/libccnl-riot.a
 $(PKG_BUILD_DIR)/lib/libccnl-riot.a: $(PKG_BUILD_DIR)/Makefile
 	$(MAKE) -C $(PKG_BUILD_DIR)
 
+# TODO: Drop `-DCMAKE_POLICY_VERSION_MINIMUM=3.5` once upstream is compatible
+#       with newer cmake (e.g. compilation still succeeds with cmake 4.x)
 $(PKG_BUILD_DIR)/Makefile: $(PKG_PREPARED) $(TOOLCHAIN_FILE) | ..cmake_version_supported
 	cmake -B$(PKG_BUILD_DIR) -H$(PKG_SOURCE_DIR)/src \
 	      -DCMAKE_TOOLCHAIN_FILE=$(TOOLCHAIN_FILE) \
+	      -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
 	      -DCCNL_RIOT=1 -DRIOT_CFLAGS="$(RIOT_CFLAGS)" -DBUILD_TESTING=OFF
 
 $(TOOLCHAIN_FILE): FORCE

pkg/cryptoauthlib/Makefile

@@ -36,8 +36,11 @@ cryptoauth: $(PKG_BUILD_DIR)/Makefile
 	$(MAKE) -C $(PKG_BUILD_DIR)
 	cp $(PKG_BUILD_DIR)/libcryptoauth.a $(BINDIR)/$(PKG_NAME).a
 
+# TODO: Drop `-DCMAKE_POLICY_VERSION_MINIMUM=3.5` once upstream is compatible
+#       with newer cmake (e.g. compilation still succeeds with cmake 4.x)
 $(PKG_BUILD_DIR)/Makefile: $(TOOLCHAIN_FILE)
 	cmake -DCMAKE_TOOLCHAIN_FILE=$(TOOLCHAIN_FILE) \
+		  -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
 		  -Wno-dev \
 		  -DATCA_NO_HEAP:BOOL=TRUE \
 		  -B$(PKG_BUILD_DIR) \

pkg/jerryscript/Makefile

@@ -46,12 +46,15 @@ $(BINDIR)/jerryscript.a: $(PKG_BUILD_DIR)/Makefile
 	@cp $(PKG_BUILD_DIR)/lib/libjerry-ext.a $(BINDIR)/jerryscript-ext.a
 	@cp $(PKG_BUILD_DIR)/lib/libjerry-port-default.a $(BINDIR)/jerryscript-port-default.a
 
+# TODO: Drop `-DCMAKE_POLICY_VERSION_MINIMUM=3.5` once upstream is compatible
+#       with newer cmake (e.g. compilation still succeeds with cmake 4.x)
 $(PKG_BUILD_DIR)/Makefile:
 	cmake -B$(PKG_BUILD_DIR) -H$(PKG_SOURCE_DIR) \
 	 -DCMAKE_SYSTEM_NAME=RIOT \
 	 -DCMAKE_SYSTEM_PROCESSOR="$(MCPU)" \
 	 -DCMAKE_C_COMPILER=$(CC) \
 	 -DCMAKE_C_COMPILER_WORKS=TRUE \
+	 -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
 	 -DENABLE_LTO=OFF \
 	 -DENABLE_AMALGAM=OFF \
 	 -DHAVE_TIME_H=0 \

pkg/openthread/Makefile

@@ -64,6 +64,8 @@ $(BINDIR)/openthread-$(TD).a: $(OT_CORE_LIB_DIR)/libopenthread-$(TD).a
 $(OT_CORE_LIB_DIR)/libopenthread-$(TD).a: $(PKG_BUILD_DIR)/Makefile
 	$(QQ)"$(MAKE)" -C $(PKG_BUILD_DIR) $(OT_MODULES)
 
+# TODO: Drop `-DCMAKE_POLICY_VERSION_MINIMUM=3.5` once upstream is compatible
+#       with newer cmake (e.g. compilation still succeeds with cmake 4.x)
 $(PKG_BUILD_DIR)/Makefile:
 	cmake -Wno-dev -B$(PKG_BUILD_DIR) -H$(PKG_SOURCE_DIR) \
 	 -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY \
@@ -75,6 +77,7 @@ $(PKG_BUILD_DIR)/Makefile:
 	 -DCMAKE_CXX_FLAGS="$(OT_C_FLAGS) $(OT_CXXFLAGS) -fno-exceptions -fno-rtti" \
 	 -DCMAKE_NM="$(NM)" \
 	 -DCMAKE_STRIP="$(STRIP)" \
+	 -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
 	 -DOT_PLATFORM=NO \
 	 -DOT_CONFIG="$(RIOTBASE)/pkg/openthread/include/platform_config.h" \
 	 -DOT_APP_CLI=$(OT_APP_CLI) \