config.mak.uname: avoid macOS linker warning on Xcode 16.3+
Building on macOS with Xcode 16.3 or newer emits: ld: warning: reducing alignment of section __DATA,__common from 0x8000 to 0x4000 because it exceeds segment maximum alignment Pass -fno-common when "ld -v" reports ld-1167 or newer, so tentative definitions of large arrays go into BSS instead of __DATA,__common. Signed-off-by: Harald Nordgren <haraldnordgren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Harald Nordgren committed
Jun 2, 2026 at 07:37 UTC
5cd4d0d8500c6ef1b102f5cb35187a91c299f013
1 file changed
+6
config.mak.uname
+6
index 3c35ae33a3..32b58e7a95 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -160,6 +160,12 @@ ifeq ($(uname_S),Darwin)
NEEDS_GOOD_LIBICONV = UnfortunatelyYes
endif
+ # Silence Xcode 16.3+ linker warning about __DATA,__common alignment.
+ LD_MAJOR_VERSION = $(shell ld -v 2>&1 | sed -n 's/.*PROJECT:ld-\([0-9]*\).*/\1/p')
+ ifeq ($(shell test -n "$(LD_MAJOR_VERSION)" && test "$(LD_MAJOR_VERSION)" -ge 1167 && echo 1),1)
+ BASIC_CFLAGS += -fno-common
+ endif
+
# The builtin FSMonitor on MacOS builds upon Simple-IPC. Both require
# Unix domain sockets and PThreads.
ifndef NO_PTHREADS