add snappy (#460)

Co-authored-by: Jacob Heider <jacob@tea.xyz>
Co-authored-by: Max Howell <mxcl@me.com>

projects/google.github.io/snappy/CMakeLists.txt.patch

@@ -0,0 +1,23 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index c3062e2..0ed2c1c 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -61,18 +61,6 @@ else(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+   endif(NOT CMAKE_CXX_FLAGS MATCHES "-Wall")
+
+-  # Use -Wextra for clang and gcc.
+-  if(NOT CMAKE_CXX_FLAGS MATCHES "-Wextra")
+-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra")
+-  endif(NOT CMAKE_CXX_FLAGS MATCHES "-Wextra")
+-
+-  # Use -Werror for clang only.
+-  if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+-    if(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
+-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
+-    endif(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
+-  endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+-
+   # Disable C++ exceptions.
+   string(REGEX REPLACE "-fexceptions" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")

projects/google.github.io/snappy/package.yml

@@ -0,0 +1,49 @@
+distributable:
+   url: https://github.com/google/snappy/archive/refs/tags/{{version}}.tar.gz
+   strip-components: 1
+
+versions:
+  github: google/snappy/tags
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+    freedesktop.org/pkg-config: '*'
+    cmake.org: '*'
+    gnu.org/patch: '*'
+  script: |
+    # disable -Werror (because there are warnings lol)
+    patch -p1 <props/CMakeLists.txt.patch
+    cmake . $ARGS
+    make
+    make install
+  env:
+    ARGS:
+      - -DCMAKE_INSTALL_PREFIX={{prefix}}
+      - -DCMAKE_BUILD_TYPE=Release
+      - -DSNAPPY_BUILD_TESTS=OFF
+      - -DSNAPPY_BUILD_BENCHMARKS=OFF
+      - -DBUILD_SHARED_LIBS=ON
+
+test:
+  dependencies:
+    tea.xyz/gx/cc: c99
+  fixture: |
+    #include <assert.h>
+    #include <snappy.h>
+    #include <string>
+    using namespace std;
+    using namespace snappy;
+    int main() {
+      string source = "Hello World!";
+      string compressed, decompressed;
+      Compress(source.data(), source.size(), &compressed);
+      Uncompress(compressed.data(), compressed.size(), &decompressed);
+      assert(source == decompressed);
+      return 0;
+    }
+  script: |
+    mv $FIXTURE fixture.cpp
+    c++ fixture.cpp -lsnappy -std=c++11
+    ./a.out