abseil-cpp: Fix build on musl/mips

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/abseil-cpp/abseil-cpp/0001-absl-always-use-asm-sgidefs.h.patch

@@ -0,0 +1,38 @@
+From 14229e8c6f42a96e4d725124193ceefa54e5e1a4 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 9 Apr 2020 13:06:27 -0700
+Subject: [PATCH] absl: always use <asm/sgidefs.h>
+
+Fixes mips/musl build, since sgidefs.h is not present on all C libraries
+but on linux asm/sgidefs.h is there and contains same definitions, using
+that makes it portable.
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ absl/base/internal/direct_mmap.h | 6 +-----
+ 1 file changed, 1 insertion(+), 5 deletions(-)
+
+diff --git a/absl/base/internal/direct_mmap.h b/absl/base/internal/direct_mmap.h
+index 2e5e422..c515325 100644
+--- a/absl/base/internal/direct_mmap.h
++++ b/absl/base/internal/direct_mmap.h
+@@ -41,13 +41,9 @@
+ 
+ #ifdef __mips__
+ // Include definitions of the ABI currently in use.
+-#ifdef __BIONIC__
+-// Android doesn't have sgidefs.h, but does have asm/sgidefs.h, which has the
++// bionic/musl C libs don't have sgidefs.h, but do have asm/sgidefs.h, which has the
+ // definitions we need.
+ #include <asm/sgidefs.h>
+-#else
+-#include <sgidefs.h>
+-#endif  // __BIONIC__
+ #endif  // __mips__
+ 
+ // SYS_mmap and SYS_munmap are not defined in Android.
+-- 
+2.26.0
+

meta-oe/recipes-devtools/abseil-cpp/abseil-cpp_git.bb

@@ -15,6 +15,7 @@ SRC_URI = "git://github.com/abseil/abseil-cpp;branch=${BRANCH}                \
            file://0002-Add-forgotten-ABSL_HAVE_VDSO_SUPPORT-conditional.patch \
            file://0003-Add-fPIC-option.patch                                  \
            file://0001-Add-RISCV-support-to-GetProgramCounter.patch \
+           file://0001-absl-always-use-asm-sgidefs.h.patch \
           "
 
 S = "${WORKDIR}/git"