From d6a97540a847573df7f72792e34c5db8898f8bdf Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Fri, 2 Oct 2020 23:11:45 +0200
Subject: [PATCH] cmake: macos build

---
 CMake/CheckDependency.cmake             | 69 +++++++++++++++----------
 src/libmemcachedprotocol/CMakeLists.txt |  5 ++
 src/libmemcachedutil/CMakeLists.txt     |  5 ++
 3 files changed, 52 insertions(+), 27 deletions(-)

diff --git a/CMake/CheckDependency.cmake b/CMake/CheckDependency.cmake
index 3cb57535..1003d68c 100644
--- a/CMake/CheckDependency.cmake
+++ b/CMake/CheckDependency.cmake
@@ -3,40 +3,55 @@ find_package(PkgConfig)
 include(SafeString)
 include(CheckHeader)
 
+function(check_dependency_basic NAME LIB HEADER)
+	set(FOUND 1)
+	message("-- Checking for library '${LIB}' with header '${HEADER}' ...")
+	find_library(LIB${LIB} NAMES ${LIB})
+	if(NOT LIB${LIB})
+		set(FOUND 0)
+	endif()
+	if(HEADER)
+		safe_string(${HEADER} HEADER_CONST)
+		check_header(${HEADER})
+		if(NOT HAVE_${HEADER_CONST})
+			set(FOUND 0)
+		else()
+			find_path(${HEADER_CONST}_ROOT ${HEADER})
+			if(NOT ${HEADER_CONST}_ROOT)
+				set(FOUND 0)
+			endif()
+		endif()
+	endif()
+	if(FOUND)
+		message("--   Found library '${LIB${LIB}}'")
+		message("--   Found include '${${HEADER_CONST}_ROOT}'")
+	else()
+		message("--   No library '${LIB}' found")
+	endif()
+	set(${NAME} ${FOUND} PARENT_SCOPE)
+	set(${NAME}_LIBRARIES ${LIB${LIB}} PARENT_SCOPE)
+	set(${NAME}_INCLUDEDIR ${${HEADER_CONST}_ROOT} PARENT_SCOPE)
+endfunction()
+
 function(check_dependency NAME LIB HEADER)
     if(PKG_CONFIG_FOUND)
         pkg_check_modules(${NAME} lib${LIB}${ARGN})
         if(NOT ${NAME}_FOUND)
             pkg_check_modules(${NAME} ${LIB}${ARGN})
         endif()
-        set(${NAME} ${${NAME}_FOUND} PARENT_SCOPE)
-		set(${NAME}_LIBRARIES ${${NAME}_LDFLAGS} PARENT_SCOPE)
-        set(${NAME}_INCLUDEDIR ${${NAME}_INCLUDEDIR} PARENT_SCOPE)
+		if(NOT ${NAME}_FOUND)
+			check_dependency_basic(${NAME} ${LIB} ${HEADER})
+		else()	
+			set(${NAME} ${${NAME}_FOUND} PARENT_SCOPE)
+			set(${NAME}_LIBRARIES ${${NAME}_LDFLAGS} PARENT_SCOPE)
+			set(${NAME}_INCLUDEDIR ${${NAME}_INCLUDEDIR} PARENT_SCOPE)
 
-        safe_string(${LIB} LIB_CONST)
-        set(HAVE_${NAME} ${${NAME}_FOUND} PARENT_SCOPE)
-        safe_string(${HEADER} HEADER_CONST)
-        find_path(HAVE_${HEADER_CONST} ${HEADER} PATHS ${${NAME}_INCLUDEDIR})
+			safe_string(${LIB} LIB_CONST)
+			set(HAVE_${NAME} ${${NAME}_FOUND} PARENT_SCOPE)
+			safe_string(${HEADER} HEADER_CONST)
+			find_path(HAVE_${HEADER_CONST} ${HEADER} PATHS ${${NAME}_INCLUDEDIR})
+		endif()
     else()
-        set(FOUND 1)
-        find_library(LIB${LIB} NAMES ${LIB})
-        if(NOT LIB${LIB})
-            set(FOUND 0)
-        endif()
-        if(HEADER)
-            safe_string(${HEADER} HEADER_CONST)
-            check_header(${HEADER})
-            if(NOT HAVE_${HEADER_CONST})
-                set(FOUND 0)
-            else()
-                find_path(${HEADER_CONST}_ROOT ${HEADER})
-                if(NOT ${HEADER_CONST}_ROOT)
-                    set(FOUND 0)
-                endif()
-            endif()
-        endif()
-        set(${NAME} ${FOUND} PARENT_SCOPE)
-        set(${NAME}_LIBRARIES ${LIB${LIB}} PARENT_SCOPE)
-        set(${NAME}_INCLUDEDIR ${${HEADER_CONST}_ROOT} PARENT_SCOPE)
+		check_dependency_basic(${NAME} ${LIB} ${HEADER})
     endif()
 endfunction()
diff --git a/src/libmemcachedprotocol/CMakeLists.txt b/src/libmemcachedprotocol/CMakeLists.txt
index 84b7fa1f..e239d21c 100644
--- a/src/libmemcachedprotocol/CMakeLists.txt
+++ b/src/libmemcachedprotocol/CMakeLists.txt
@@ -14,6 +14,11 @@ set_target_properties(libmemcachedprotocol PROPERTIES
         SOVERSION ${LIBMEMCACHEDPROTOCOL_SO_VERSION}
         VERSION v${LIBMEMCACHEDPROTOCOL_VERSION})
 target_compile_definitions(libmemcachedprotocol PRIVATE -DBUILDING_LIBMEMCACHED)
+if(CMAKE_CXX_COMPILER_ID STREQUAL AppleClang)
+	set_target_properties(libmemcachedprotocol PROPERTIES
+		LINK_FLAGS "-Wl,-undefined,dynamic_lookup"
+		)
+endif()
 target_link_libraries(libmemcachedprotocol PUBLIC Threads::Threads)
 target_include_directories(libmemcachedprotocol PRIVATE
         ${CMAKE_SOURCE_DIR}/src
diff --git a/src/libmemcachedutil/CMakeLists.txt b/src/libmemcachedutil/CMakeLists.txt
index e1834f26..c1110b47 100644
--- a/src/libmemcachedutil/CMakeLists.txt
+++ b/src/libmemcachedutil/CMakeLists.txt
@@ -15,6 +15,11 @@ set_target_properties(libmemcachedutil PROPERTIES
         SOVERSION ${LIBMEMCACHEDUTIL_SO_VERSION}
         VERSION v${LIBMEMCACHEDUTIL_VERSION})
 target_compile_definitions(libmemcachedutil PRIVATE -DBUILDING_LIBMEMCACHED)
+if(CMAKE_CXX_COMPILER_ID STREQUAL AppleClang)
+	set_target_properties(libmemcachedutil PROPERTIES
+		LINK_FLAGS "-Wl,-undefined,dynamic_lookup"
+		)
+endif()
 target_link_libraries(libmemcachedutil PUBLIC Threads::Threads)
 target_include_directories(libmemcachedutil PRIVATE
         ${CMAKE_SOURCE_DIR}/src
-- 
2.30.2