diff --git a/deps/openssl/CMakeLists.txt b/deps/openssl/CMakeLists.txt
index d2d4144de..599265847 100644
--- a/deps/openssl/CMakeLists.txt
+++ b/deps/openssl/CMakeLists.txt
@@ -94,7 +94,12 @@ elseif(OS_LINUX)
 		set(OPENSSL_CONFIGURE_ARCH "linux-generic64")
 	endif()
 elseif(OS_DARWIN)
-	set(OPENSSL_MAKE make -j${CPUS})
+	execute_process(
+		COMMAND xcrun --show-sdk-path
+		OUTPUT_VARIABLE MACOS_SDK_PATH
+		OUTPUT_STRIP_TRAILING_WHITESPACE
+	)
+	set(OPENSSL_MAKE make SDKROOT=${MACOS_SDK_PATH} -j${CPUS})
 	if(ARCH_X86)
 		set(OPENSSL_CONFIGURE_ARCH "darwin-i386-cc")
 	elseif(ARCH_X64)
diff --git a/deps/yara/CMakeLists.txt b/deps/yara/CMakeLists.txt
index 6c69c6976..dca006472 100644
--- a/deps/yara/CMakeLists.txt
+++ b/deps/yara/CMakeLists.txt
@@ -39,6 +39,16 @@ else()
 	set(YARAC_PATH         ${YARA_DIR}/yarac)
 endif()
 
+# https://github.com/avast/retdec/issues/439
+if(APPLE)
+	execute_process(
+		COMMAND xcrun --show-sdk-path
+		OUTPUT_VARIABLE MACOS_SDK_PATH
+		OUTPUT_STRIP_TRAILING_WHITESPACE
+	)
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --sysroot=${MACOS_SDK_PATH}")
+endif()
+
 # These are not used on MSVC, but we use it on all platforms to detect if
 # build configuration changed - changes in config should be mirrored on both
 # MSVC & Linux.
@@ -101,16 +111,6 @@ else()
 	)
 endif()
 
-# https://github.com/avast/retdec/issues/439
-if(APPLE)
-	execute_process(
-		COMMAND xcrun --show-sdk-path
-		OUTPUT_VARIABLE MACOS_SDK_PATH
-		OUTPUT_STRIP_TRAILING_WHITESPACE
-	)
-	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --sysroot=${MACOS_SDK_PATH}")
-endif()
-
 if(NOT MSVC)
 	ExternalProject_Add_Step(yara configure-linux
 		WORKING_DIRECTORY ${YARA_DIR}
diff --git a/support/CMakeLists.txt b/support/CMakeLists.txt
index 4e6b9d485..0fa8d5594 100644
--- a/support/CMakeLists.txt
+++ b/support/CMakeLists.txt
@@ -53,7 +53,7 @@ does not match the current version '\${YARAC_CURRENT_VERSION}' \
 install(CODE "
 	execute_process(
 		# -u = unbuffered -> print debug messages right away.
-		COMMAND \"${PYTHON_EXECUTABLE}\" -u \"${CMAKE_SOURCE_DIR}/support/install-share.py\" \"${CMAKE_INSTALL_PREFIX}\" \"${SUPPORT_PKG_URL}\" \"${SUPPORT_PKG_SHA256}\" \"${SUPPORT_PKG_VERSION}\"
+		COMMAND \"${PYTHON_EXECUTABLE}\" -u \"${PROJECT_SOURCE_DIR}/support/install-share.py\" \"${CMAKE_INSTALL_PREFIX}\" \"${SUPPORT_PKG_URL}\" \"${SUPPORT_PKG_SHA256}\" \"${SUPPORT_PKG_VERSION}\"
 		RESULT_VARIABLE INSTALL_SHARE_RES
 	)
 	if(INSTALL_SHARE_RES)
@@ -91,14 +91,14 @@ install(
 
 # Install YARA rules for tools detection.
 #
-set(YARA_INSTALL_PY "${CMAKE_SOURCE_DIR}/support/install-yara.py")
+set(YARA_INSTALL_PY "${PROJECT_SOURCE_DIR}/support/install-yara.py")
 
 install(CODE "
 	execute_process(
 		COMMAND \"${PYTHON_EXECUTABLE}\" -u \"${YARA_INSTALL_PY}\"
 			\"${YARAC_PATH}\"
 			\"${SUPPORT_TARGET_DIR}\"
-			\"${CMAKE_SOURCE_DIR}/support/yara_patterns\"
+			\"${PROJECT_SOURCE_DIR}/support/yara_patterns\"
 			${RETDEC_COMPILE_YARA}
 		RESULT_VARIABLE INSTALL_YARA_RES
 	)