gnu: snappy: Update to 1.1.9.

* gnu/packages/compression.scm (snappy): Update to 1.1.9.
[source]: Add another patch.
[arguments]: Add new #:configure-flags and an
'unpack-third_party-subprojects phase.
[native-inputs]: Add the sources for benchmark and googletests.
* gnu/packages/patches/snappy-add-inline-for-GCC.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

1 files changed, 67 insertions, 0 deletions

diff --git a/gnu/packages/patches/snappy-add-inline-for-GCC.patch b/gnu/packages/patches/snappy-add-inline-for-GCC.patch
new file mode 100644
index 0000000000..04d35f56ee
--- /dev/null
+++ b/gnu/packages/patches/snappy-add-inline-for-GCC.patch
@@ -0,0 +1,67 @@
+From 0c716d435abe65250100c2caea0e5126ac4e14bd 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.
+---
+ 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