git: Force use -O2 when lto enabled

Git doen't support lto with gcc flag -O3 and -Ofast. This is discussed in #24366. If CONFIG_USE_LTO=y, filter -O% from CPPFLAGS and set to -O2. Signed-off-by: Ryan Keane <[email protected]>
openwrt · Jun 27, 2024 · f6b68a9 · f6b68a9
1 parent a029f01
commit f6b68a9
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/net/git/Makefile b/net/git/Makefile
@@ -81,6 +81,10 @@ define Package/git-gitweb/conffiles
 /etc/gitweb.conf
 endef
 
+ifeq ($(CONFIG_USE_LTO),y)
+  TARGET_CPPFLAGS := $(filter-out -O%,$(TARGET_CFLAGS)) -O2
+endif
+
 MAKE_FLAGS := \
 	CC="$(TARGET_CC)" \
 	CFLAGS="$(TARGET_CFLAGS)" \