gcc: Add a patch to avoid hardcoded paths in libgcc on powerpc

Tweak the powerpc code to just include filenames rather than full paths
to avoid build reproducibility issues.

(From OE-Core rev: a71832a14b6944da10c1916861545577f2f2de2c)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 20 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-12.1.inc b/meta/recipes-devtools/gcc/gcc-12.1.inc
index c42fa3d72f..488e0c95b1 100644
--- a/meta/recipes-devtools/gcc/gcc-12.1.inc
+++ b/meta/recipes-devtools/gcc/gcc-12.1.inc
@@ -66,6 +66,7 @@ SRC_URI = "${BASEURI} \
            file://0026-rust-recursion-limit.patch \
            file://0001-libsanitizer-cherry-pick-9cf13067cb5088626ba7-from-u.patch \
            file://prefix-map-realpath.patch \
+           file://hardcoded-paths.patch \
 "
 SRC_URI[sha256sum] = "62fd634889f31c02b64af2c468f064b47ad1ca78411c45abe6ac4b5f8dd19c7b"
 
diff --git a/meta/recipes-devtools/gcc/gcc/hardcoded-paths.patch b/meta/recipes-devtools/gcc/gcc/hardcoded-paths.patch
new file mode 100644
index 0000000000..aa3d16f600
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc/hardcoded-paths.patch
@@ -0,0 +1,19 @@
+Avoid encoding build paths into sources used for floating point on powerpc.
+(MACHINE=qemuppc bitbake libgcc).
+
+Upstream-Status: Pending
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+
+Index: gcc-12.1.0/libgcc/config/rs6000/t-float128
+===================================================================
+--- gcc-12.1.0.orig/libgcc/config/rs6000/t-float128
++++ gcc-12.1.0/libgcc/config/rs6000/t-float128
+@@ -103,7 +103,7 @@ $(ibm128_dec_objs)  : INTERNAL_CFLAGS +=
+ $(fp128_softfp_src) : $(srcdir)/soft-fp/$(subst -sw,,$(subst kf,tf,$@)) $(fp128_dep)
+        @src="$(srcdir)/soft-fp/$(subst -sw,,$(subst kf,tf,$@))"; \
+        echo "Create $@"; \
+-       (echo "/* file created from $$src */"; \
++       (echo "/* file created from `basename $$src` */"; \
+         echo; \
+         sed -f $(fp128_sed) < $$src) > $@
+