[meta-oe][PATCH] snappy: fix native build with older gcc on host

[meta-oe][PATCH] snappy: fix native build with older gcc on host

[Martin Jansa]

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 ...-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch | 71 +++++++++++++++++++
 .../recipes-extended/snappy/snappy_1.1.9.bb   |  4 +-
 2 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100644 meta-oe/recipes-extended/snappy/snappy/0001-Add-inline-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch

diff --git a/meta-oe/recipes-extended/snappy/snappy/0001-Add-inline-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch b/meta-oe/recipes-extended/snappy/snappy/0001-Add-inline-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch
new file mode 100644
index 0000000000..27357d88aa
--- /dev/null
+++ b/meta-oe/recipes-extended/snappy/snappy/0001-Add-inline-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch
@@ -0,0 +1,71 @@
+From 4728803cc8687431449c8c9fbfabb1da04943400 Mon Sep 17 00:00:00 2001
+From: "Georgi D. Sotirov" <gdsotirov@gmail.com>
+Date: Wed, 5 May 2021 14:16:46 +0300
+Subject: [PATCH] Add inline with SNAPPY_ATTRIBUTE_ALWAYS_INLINE
+
+Add inline with SNAPPY_ATTRIBUTE_ALWAYS_INLINE on AdvanceToNextTag to
+fix the following compilation errors and a warning with GCC:
+
+[  2%] Building CXX object CMakeFiles/snappy.dir/snappy.cc.o
+/usr/bin/c++   -DHAVE_CONFIG_H -Dsnappy_EXPORTS
+-I/tmp/snappy-1.1.9/build -I/tmp/snappy-1.1.9  -O3
+-march=i586 -mtune=i686 -Wall -Wextra -fno-exceptions -fno-rtti -O3
+-DNDEBUG -fPIC   -std=c++11 -o CMakeFiles/snappy.dir/snappy.cc.o -c
+/tmp/snappy-1.1.9/snappy.cc
+/tmp/snappy-1.1.9/snappy.cc:1017:8: warning: always_inline
+function might not be inlinable [-Wattributes]
+ size_t AdvanceToNextTag(const uint8_t** ip_p, size_t* tag) {
+        ^
+/tmp/snappy-1.1.9/snappy.cc: In function 'std::pair<const
+unsigned char*, int> snappy::DecompressBranchless(const uint8_t*, const
+uint8_t*, ptrdiff_t, T, ptrdiff_t) [with T = char*; uint8_t = unsigned
+char; ptrdiff_t = int]':
+/tmp/snappy-1.1.9/snappy.cc:1017:8: error: inlining failed in
+call to always_inline 'size_t snappy::AdvanceToNextTag(const uint8_t**,
+size_t*)': function body can be overwritten at link time
+/tmp/snappy-1.1.9/snappy.cc:1097:53: error: called from here
+         size_t tag_type = AdvanceToNextTag(&ip, &tag);
+                                                     ^
+/tmp/snappy-1.1.9/snappy.cc:1017:8: error: inlining failed in
+call to always_inline 'size_t snappy::AdvanceToNextTag(const uint8_t**,
+size_t*)': function body can be overwritten at link time
+ size_t AdvanceToNextTag(const uint8_t** ip_p, size_t* tag) {
+        ^
+/tmp/snappy-1.1.9/snappy.cc:1097:53: error: called from here
+         size_t tag_type = AdvanceToNextTag(&ip, &tag);
+                                                     ^
+/tmp/snappy-1.1.9/snappy.cc:1017:8: error: inlining failed in
+call to always_inline 'size_t snappy::AdvanceToNextTag(const uint8_t**,
+size_t*)': function body can be overwritten at link time
+ size_t AdvanceToNextTag(const uint8_t** ip_p, size_t* tag) {
+        ^
+/tmp/snappy-1.1.9/snappy.cc:1097:53: error: called from here
+         size_t tag_type = AdvanceToNextTag(&ip, &tag);
+                                                     ^
+CMakeFiles/snappy.dir/build.make:137: recipe for target
+'CMakeFiles/snappy.dir/snappy.cc.o' failed
+
+Just like with other functions using SNAPPY_ATTRIBUTE_ALWAYS_INLINE
+macro (i.e. __attribute__((always_inline)) ) it is necessary to use C++
+inline specifier.
+
+Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
+
+Upstream-Status: Submitted [https://github.com/google/snappy/pull/128]
+---
+ snappy.cc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/snappy.cc b/snappy.cc
+index 79dc0e8..51157be 100644
+--- a/snappy.cc
++++ b/snappy.cc
+@@ -1014,7 +1014,7 @@ void MemMove(ptrdiff_t dst, const void* src, size_t size) {
+ }
+ 
+ SNAPPY_ATTRIBUTE_ALWAYS_INLINE
+-size_t AdvanceToNextTag(const uint8_t** ip_p, size_t* tag) {
++inline size_t AdvanceToNextTag(const uint8_t** ip_p, size_t* tag) {
+   const uint8_t*& ip = *ip_p;
+   // This section is crucial for the throughput of the decompression loop.
+   // The latency of an iteration is fundamentally constrained by the
diff --git a/meta-oe/recipes-extended/snappy/snappy_1.1.9.bb b/meta-oe/recipes-extended/snappy/snappy_1.1.9.bb
index 151c4ddc38..5c786d8913 100644
--- a/meta-oe/recipes-extended/snappy/snappy_1.1.9.bb
+++ b/meta-oe/recipes-extended/snappy/snappy_1.1.9.bb
@@ -10,7 +10,9 @@ compression ratio."
 LICENSE = "BSD-3-Clause"
 LIC_FILES_CHKSUM = "file://COPYING;md5=f62f3080324a97b3159a7a7e61812d0c"
 
-SRC_URI = "gitsm://github.com/google/snappy.git;protocol=https"
+SRC_URI = "gitsm://github.com/google/snappy.git;protocol=https \
+    file://0001-Add-inline-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch \
+"
 SRCREV = "2b63814b15a2aaae54b7943f0cd935892fae628f"
 S = "${WORKDIR}/git"
 
-- 
2.30.2