From 1ea9d923089d538dffb067930c20e813fa57740b Mon Sep 17 00:00:00 2001
From: sekaiacg <sekaiacg@gmail.com>
Date: Sun, 26 Jan 2025 19:37:41 +0800
Subject: [PATCH] cmake: Add xxHash support

https://github.com/Cyan4973/xxHash
Signed-off-by: sekaiacg <sekaiacg@gmail.com>
---
 .gitmodules                               | 4 ++++
 build/cmake/erofs-tools/erofs_tools.cmake | 1 +
 build/cmake/lib/CMakeLists.txt            | 6 ++++++
 build/cmake/lib/liberofs.cmake            | 3 ++-
 src/xxHash                                | 1 +
 5 files changed, 14 insertions(+), 1 deletion(-)
 create mode 160000 src/xxHash

diff --git a/.gitmodules b/.gitmodules
index b07cacea..3a0262b8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,7 @@
 [submodule "src/winfsp"]
 	path = src/winfsp
 	url = https://github.com/winfsp/winfsp
+[submodule "src/xxHash"]
+	path = src/xxHash
+	url = https://github.com/Cyan4973/xxHash.git
+	branch = dev
diff --git a/build/cmake/erofs-tools/erofs_tools.cmake b/build/cmake/erofs-tools/erofs_tools.cmake
index 7d935b3a..c338384b 100644
--- a/build/cmake/erofs-tools/erofs_tools.cmake
+++ b/build/cmake/erofs-tools/erofs_tools.cmake
@@ -31,6 +31,7 @@ set(common_static_link_lib
 	z_static
 	libzstd_static
 	pcre2
+	xxhash
 	${ld_end_group}
 )
 
diff --git a/build/cmake/lib/CMakeLists.txt b/build/cmake/lib/CMakeLists.txt
index aae2031d..c12f1d98 100644
--- a/build/cmake/lib/CMakeLists.txt
+++ b/build/cmake/lib/CMakeLists.txt
@@ -18,6 +18,12 @@ elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin|CYGWIN")
 	include(libext2_uuid.cmake)
 endif ()
 
+#XXHASH
+set(BUILD_SHARED_LIBS OFF)
+set(XXHASH_BUILD_ENABLE_INLINE_API ON)
+set(XXHASH_BUILD_XXHSUM OFF)
+add_subdirectory("${LIB_DIR}/xxHash/cmake_unofficial" "xxHash")
+
 # LZ4
 set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
 set(LZ4_BUILD_CLI OFF)
diff --git a/build/cmake/lib/liberofs.cmake b/build/cmake/lib/liberofs.cmake
index b2372faa..1c7553fa 100644
--- a/build/cmake/lib/liberofs.cmake
+++ b/build/cmake/lib/liberofs.cmake
@@ -73,6 +73,8 @@ set(LIBEROFS_STATIC_DEFAULTS_CFLAGS
 	"-DHAVE_LIBZSTD"
 	"-DWITH_ANDROID"
 	"-DEROFS_MT_ENABLED"
+	"-DHAVE_XXHASH_H"
+	"-DHAVE_XXHASH"
 	"${DARWIN_CFLAGS}"
 	CACHE INTERNAL "liberofs_static_defaults_cflags"
 )
@@ -101,7 +103,6 @@ set(liberofs_srcs
 	"${TARGET_SRC_DIR}/uuid.c"
 	"${TARGET_SRC_DIR}/tar.c"
 	"${TARGET_SRC_DIR}/block_list.c"
-	"${TARGET_SRC_DIR}/xxhash.c"
 	"${TARGET_SRC_DIR}/rebuild.c"
 	"${TARGET_SRC_DIR}/diskbuf.c"
 	"${TARGET_SRC_DIR}/uuid_unparse.c"
diff --git a/src/xxHash b/src/xxHash
new file mode 160000
index 00000000..e4e33f1f
--- /dev/null
+++ b/src/xxHash
@@ -0,0 +1 @@
+Subproject commit e4e33f1f54f3a05de328a1fc5574a432ebf0c5a8