1From 450c1d88b3e1af34614294830b4dc0612d198d26 Mon Sep 17 00:00:00 2001 2From: =?UTF-8?q?Pawe=C5=82=20Bylica?= <chfast@gmail.com> 3Date: Wed, 8 May 2019 10:42:03 +0200 4Subject: [PATCH] cmake: Use find_package() to find Snappy 5 6Upstream: https://github.com/google/leveldb/pull/686/commits/3e73a396a082efc76e065ae974fe18c3bb27219d 7[Thomas: this commit allows to fix the detection of the snappy library 8in static link configurations] 9Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> 10--- 11 CMakeLists.txt | 12 ++++++++---- 12 cmake/FindSnappy.cmake | 31 +++++++++++++++++++++++++++++++ 13 2 files changed, 39 insertions(+), 4 deletions(-) 14 create mode 100644 cmake/FindSnappy.cmake 15 16diff --git a/CMakeLists.txt b/CMakeLists.txt 17index 78fead6..2efccda 100644 18--- a/CMakeLists.txt 19+++ b/CMakeLists.txt 20@@ -6,6 +6,9 @@ cmake_minimum_required(VERSION 3.9) 21 # Keep the version below in sync with the one in db.h 22 project(leveldb VERSION 1.22.0 LANGUAGES C CXX) 23 24+# Include local CMake modules. 25+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake) 26+ 27 # This project can use C11, but will gracefully decay down to C89. 28 set(CMAKE_C_STANDARD 11) 29 set(CMAKE_C_STANDARD_REQUIRED OFF) 30@@ -31,13 +34,14 @@ option(LEVELDB_INSTALL "Install LevelDB's header and library" ON) 31 include(TestBigEndian) 32 test_big_endian(LEVELDB_IS_BIG_ENDIAN) 33 34+find_package(Snappy) 35+ 36 include(CheckIncludeFile) 37 check_include_file("unistd.h" HAVE_UNISTD_H) 38 39 include(CheckLibraryExists) 40 check_library_exists(atomic __atomic_fetch_add_4 "" HAVE_ATOMIC) 41 check_library_exists(crc32c crc32c_value "" HAVE_CRC32C) 42-check_library_exists(snappy snappy_compress "" HAVE_SNAPPY) 43 check_library_exists(tcmalloc malloc "" HAVE_TCMALLOC) 44 45 include(CheckCXXSymbolExists) 46@@ -276,9 +280,9 @@ endif(HAVE_ATOMIC) 47 if(HAVE_CRC32C) 48 target_link_libraries(leveldb crc32c) 49 endif(HAVE_CRC32C) 50-if(HAVE_SNAPPY) 51- target_link_libraries(leveldb snappy) 52-endif(HAVE_SNAPPY) 53+if(TARGET Snappy::snappy) 54+ target_link_libraries(leveldb Snappy::snappy) 55+endif() 56 if(HAVE_TCMALLOC) 57 target_link_libraries(leveldb tcmalloc) 58 endif(HAVE_TCMALLOC) 59diff --git a/cmake/FindSnappy.cmake b/cmake/FindSnappy.cmake 60new file mode 100644 61index 0000000..88c1de9 62--- /dev/null 63+++ b/cmake/FindSnappy.cmake 64@@ -0,0 +1,31 @@ 65+# Copyright 2019 The LevelDB Authors. All rights reserved. 66+# Use of this source code is governed by a BSD-style license that can be 67+# found in the LICENSE file. See the AUTHORS file for names of contributors. 68+ 69+find_library(SNAPPY_LIBRARY 70+ NAMES snappy 71+ HINTS ${SNAPPY_ROOT_DIR}/lib 72+) 73+ 74+find_path(SNAPPY_INCLUDE_DIR 75+ NAMES snappy.h 76+ HINTS ${SNAPPY_ROOT_DIR}/include 77+) 78+ 79+include(FindPackageHandleStandardArgs) 80+find_package_handle_standard_args(Snappy DEFAULT_MSG SNAPPY_LIBRARY SNAPPY_INCLUDE_DIR) 81+ 82+mark_as_advanced(SNAPPY_LIBRARY SNAPPY_INCLUDE_DIR) 83+ 84+if(SNAPPY_FOUND) 85+ set(HAVE_SNAPPY TRUE) # For compatibity with generating port_config.h. 86+ 87+ # Add imported targets. 88+ # Follow the package naming convetion 'Snappy::' from 89+ # https://github.com/google/snappy/blob/master/CMakeLists.txt#L211. 90+ add_library(Snappy::snappy UNKNOWN IMPORTED) 91+ set_target_properties(Snappy::snappy PROPERTIES 92+ IMPORTED_LOCATION ${SNAPPY_LIBRARY} 93+ INTERFACE_INCLUDE_DIRECTORIES ${SNAPPY_INCLUDE_DIR} 94+ ) 95+endif() 96-- 972.26.2 98 99