[OE-core] [PATCH] libc6-dbg: improve reproducibility

[Juro Bystricky]

Prevent bison from generating #line comments containing build
host paths references.

[YOCTO #12625]

Signed-off-by: Juro Bystricky <juro.bystricky at intel.com>
---
 .../glibc/0029-plural_c_no_preprocessor_lines.patch | 21 +++++++++++++++++++++
 meta/recipes-core/glibc/glibc_2.27.bb               |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 meta/recipes-core/glibc/glibc/0029-plural_c_no_preprocessor_lines.patch

diff --git a/meta/recipes-core/glibc/glibc/0029-plural_c_no_preprocessor_lines.patch b/meta/recipes-core/glibc/glibc/0029-plural_c_no_preprocessor_lines.patch
new file mode 100644
index 0000000..6f03e1c
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/0029-plural_c_no_preprocessor_lines.patch
@@ -0,0 +1,21 @@
+Improve reproducibility:
+Do not put any #line preprocessor commands in bison generated files.
+These lines contain absolute paths containing file locations on
+the host build machine.
+
+Upstream-Status: Pending
+Signed-off-by: Juro Bystricky <juro.bystricky at intel.com>
+
+diff --git a/intl/Makefile b/intl/Makefile
+index 2219717..a203780 100644
+--- a/intl/Makefile
++++ b/intl/Makefile
+@@ -151,7 +151,7 @@ $(objpfx)tst-gettext6.out: $(objpfx)tst-gettext.out
+ 
+ CPPFLAGS += -D'LOCALEDIR="$(localedir)"' \
+ 	    -D'LOCALE_ALIAS_PATH="$(localedir)"'
+-BISONFLAGS = --yacc --name-prefix=__gettext --output
++BISONFLAGS = --yacc --no-lines --name-prefix=__gettext --output
+ 
+ $(inst_localedir)/locale.alias: locale.alias $(+force)
+ 	$(do-install)
diff --git a/meta/recipes-core/glibc/glibc_2.27.bb b/meta/recipes-core/glibc/glibc_2.27.bb
index 827857d..f626467 100644
--- a/meta/recipes-core/glibc/glibc_2.27.bb
+++ b/meta/recipes-core/glibc/glibc_2.27.bb
@@ -43,6 +43,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \
            file://0026-reset-dl_load_write_lock-after-forking.patch \
            file://0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch \
            file://0028-bits-siginfo-consts.h-enum-definition-for-TRAP_HWBKP.patch \
+           file://0029-plural_c_no_preprocessor_lines.patch \
 "
 
 NATIVESDKFIXES ?= ""
-- 
2.7.4