cmake: Sync upstream changes

Signed-off-by: sekaiacg <[email protected]>

build.sh

@@ -25,7 +25,8 @@ cmake_build()
 			-DANDROID_ABI="$ABI" \
 			-DANDROID_STL="c++_static" \
 			-DCMAKE_TOOLCHAIN_FILE="$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake" \
-			-DANDROID_USE_LEGACY_TOOLCHAIN_FILE="OFF"
+			-DANDROID_USE_LEGACY_TOOLCHAIN_FILE="OFF" \
+			-DMAX_BLOCK_SIZE="4096"
 	elif [[ $TARGET == "Linux" ]]; then
 		local LINUX_PLATFORM=$4
 		local WSL="OFF"
@@ -37,7 +38,8 @@ cmake_build()
 			-DCMAKE_CXX_COMPILER_LAUNCHER="ccache" \
 			-DCMAKE_C_COMPILER="clang" \
 			-DCMAKE_CXX_COMPILER="clang++" \
-			-DENABLE_FULL_LTO="ON"
+			-DENABLE_FULL_LTO="ON" \
+			-DMAX_BLOCK_SIZE="4096"
 	fi
 
 	${MAKE_CMD}

build/cmake/CMakeLists.txt

@@ -17,6 +17,23 @@ add_definitions(
 	"-D_LARGEFILE64_SOURCE"
 )
 
+if (NOT MAX_BLOCK_SIZE)
+	try_run(CHECK_MAX_BLOCK_SIZE_RESULT
+		CHECK_MAX_BLOCK_SIZE_COMPILE_RESULT
+		${CMAKE_CURRENT_BINARY_DIR}/sources
+		${CMAKE_CURRENT_SOURCE_DIR}/sources/checkMaxBlockSize.c
+		NO_CACHE
+		RUN_OUTPUT_VARIABLE erofs_cv_max_block_size
+	)
+	if (erofs_cv_max_block_size GREATER 0)
+		add_definitions(-DEROFS_MAX_BLOCK_SIZE=${erofs_cv_max_block_size})
+	else ()
+		add_definitions(-DEROFS_MAX_BLOCK_SIZE=4096)
+	endif ()
+else ()
+	add_definitions(-DEROFS_MAX_BLOCK_SIZE=${MAX_BLOCK_SIZE})
+endif ()
+
 # Compile flags
 set(GLOBAL_CFLAGS
 	"-Wformat"

build/cmake/sources/checkMaxBlockSize.c

@@ -0,0 +1,10 @@
+#include <unistd.h>
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+	int result = sysconf(_SC_PAGESIZE);
+	if (result < 0)
+		return 1;
+	printf("%d", result);
+	return 0;
+}

build_darwin.sh

@@ -26,7 +26,8 @@ cmake_build()
 			-DCMAKE_CXX_COMPILER_LAUNCHER="ccache" \
 			-DCMAKE_C_COMPILER="clang" \
 			-DCMAKE_CXX_COMPILER="clang++" \
-			-DENABLE_FULL_LTO="ON"
+			-DENABLE_FULL_LTO="ON" \
+			-DMAX_BLOCK_SIZE="4096"
 	fi
 
 	${MAKE_CMD}