glibc: Forward -ffile-prefix-map option to assembler flags

(From OE-Core rev: a85cccc80aa7e6d6a5850c2d730cba5e1cb60cb3)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/glibc/glibc/0001-Propagate-ffile-prefix-map-from-CFLAGS-to-ASFLAGS.patch

@@ -0,0 +1,24 @@
+From 603e50d6b8ccadb32d59b0497f76629665c1794b Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 16 Apr 2025 19:51:01 -0700
+Subject: [PATCH] Propagate -ffile-prefix-map from CFLAGS to ASFLAGS.
+
+Upstream-Status: Submitted [https://sourceware.org/pipermail/libc-alpha/2025-April/165969.html]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ Makeconfig | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makeconfig b/Makeconfig
+index e35c5cfe4e..7a19c731c6 100644
+--- a/Makeconfig
++++ b/Makeconfig
+@@ -1176,7 +1176,7 @@ endif
+ 
+ # The assembler can generate debug information too.
+ ifndef ASFLAGS
+-ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
++ASFLAGS := $(filter -g% -fdebug-prefix-map=% -ffile-prefix-map=%,$(CFLAGS))
+ endif
+ override ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
+ 

meta/recipes-core/glibc/glibc_2.41.bb

@@ -54,6 +54,7 @@ SRC_URI =  "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \
            file://0022-Avoid-hardcoded-build-time-paths-in-the-output-binar.patch \
            file://0023-tests-Skip-2-qemu-tests-that-can-hang-in-oe-selftest.patch \
            file://0001-stdlib-Add-single-threaded-fast-path-to-rand.patch \
+           file://0001-Propagate-ffile-prefix-map-from-CFLAGS-to-ASFLAGS.patch \
 "
 S = "${WORKDIR}/git"
 B = "${WORKDIR}/build-${TARGET_SYS}"