[PATCH 2/2] grep: Fix build on ppc/musl

[Khem Raj <raj.khem@gmail.com>]

Backport a patch from libsigsegv

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 ...a-standard-layout-so-glibc-and-musl-.patch | 32 +++++++++++++++++++
 meta/recipes-extended/grep/grep_3.7.bb        |  4 ++-
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-extended/grep/grep/0001-mcontext-is-not-a-standard-layout-so-glibc-and-musl-.patch

diff --git a/meta/recipes-extended/grep/grep/0001-mcontext-is-not-a-standard-layout-so-glibc-and-musl-.patch b/meta/recipes-extended/grep/grep/0001-mcontext-is-not-a-standard-layout-so-glibc-and-musl-.patch
new file mode 100644
index 00000000000..d8283d31b16
--- /dev/null
+++ b/meta/recipes-extended/grep/grep/0001-mcontext-is-not-a-standard-layout-so-glibc-and-musl-.patch
@@ -0,0 +1,32 @@
+From 981385237834bdf3e468421147eece68d9bfc7e7 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 25 Mar 2022 13:34:26 -0700
+Subject: [PATCH] mcontext is not a standard layout so glibc and musl differ
+
+This is already applied to libsigsegv upstream, hopefully next version
+of grep will update its internal copy and we can drop this patch
+
+Upstream-Status: Backport [https://git.savannah.gnu.org/gitweb/?p=libsigsegv.git;a=commitdiff;h=a6ff69873110c0a8ba6f7fd90532dbc11224828c]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ lib/sigsegv.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/lib/sigsegv.c b/lib/sigsegv.c
+index 998c827..b6f4841 100644
+--- a/lib/sigsegv.c
++++ b/lib/sigsegv.c
+@@ -219,8 +219,8 @@ int libsigsegv_version = LIBSIGSEGV_VERSION;
+ #   define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gp_regs[1]
+ #  else /* 32-bit */
+ /* both should be equivalent */
+-#   if 0
+-#    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.regs->gpr[1]
++#   if ! defined __GLIBC__
++#    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_regs->gregs[1]
+ #   else
+ #    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.uc_regs->gregs[1]
+ #   endif
+-- 
+2.35.1
+
diff --git a/meta/recipes-extended/grep/grep_3.7.bb b/meta/recipes-extended/grep/grep_3.7.bb
index 40390c25d93..7005cbe164c 100644
--- a/meta/recipes-extended/grep/grep_3.7.bb
+++ b/meta/recipes-extended/grep/grep_3.7.bb
@@ -6,7 +6,9 @@ SECTION = "console/utils"
 LICENSE = "GPL-3.0-only"
 LIC_FILES_CHKSUM = "file://COPYING;md5=1ebbd3e34237af26da5dc08a4e440464"
 
-SRC_URI = "${GNU_MIRROR}/grep/grep-${PV}.tar.xz"
+SRC_URI = "${GNU_MIRROR}/grep/grep-${PV}.tar.xz \
+           file://0001-mcontext-is-not-a-standard-layout-so-glibc-and-musl-.patch \
+          "
 
 SRC_URI[sha256sum] = "5c10da312460aec721984d5d83246d24520ec438dd48d7ab5a05dbc0d6d6823c"
 
-- 
2.35.1