Cmake: some fixes

CMakeLists.txt

@@ -125,12 +125,12 @@ if (NOT APPLE)
 	set (CMAKE_EXE_LINKER_FLAGS          "${CMAKE_EXE_LINKER_FLAGS} ${GLIBC_COMPATIBILITY_LINK_FLAGS} ${CXX11_ABI_FLAGS}")
 endif ()
 
-if (USE_STATIC_LIBRARIES AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+include (cmake/test_compiler.cmake)
+if (USE_STATIC_LIBRARIES AND HAVE_NO_PIE)
 	set (CMAKE_CXX_FLAGS                 "${CMAKE_CXX_FLAGS} --no-pie")
 	set (CMAKE_C_FLAGS                   "${CMAKE_C_FLAGS} --no-pie")
 endif ()
 
-
 set (SAN_FLAGS "-O3 -g -fno-omit-frame-pointer")
 set (CMAKE_CXX_FLAGS_ASAN                "${CMAKE_CXX_FLAGS_ASAN}  ${SAN_FLAGS} -fsanitize=address")
 set (CMAKE_C_FLAGS_ASAN                  "${CMAKE_C_FLAGS_ASAN}    ${SAN_FLAGS} -fsanitize=address")

cmake/find_readline_edit.cmake

@@ -5,12 +5,13 @@ if (NOT READLINE_LIB)
 	find_library (READLINE_LIB NAMES readline PATHS ${READLINE_PATHS})
 endif ()
 
-find_library (TERMCAP_LIB NAMES termcap)
+list(APPEND CMAKE_FIND_LIBRARY_SUFFIXES .so.2)
 
+find_library (TERMCAP_LIB NAMES termcap)
 find_library (EDIT_LIB NAMES edit)
 
 set(READLINE_INCLUDE_PATHS "/usr/local/opt/readline/include")
-if (READLINE_LIB)
+if (READLINE_LIB AND TERMCAP_LIB)
 	find_path (READLINE_INCLUDE_DIR NAMES readline/readline.h PATHS ${READLINE_INCLUDE_PATHS} NO_DEFAULT_PATH)
 	if (NOT READLINE_INCLUDE_DIR)
 		find_path (READLINE_INCLUDE_DIR NAMES readline/readline.h PATHS ${READLINE_INCLUDE_PATHS})
@@ -40,5 +41,6 @@ check_cxx_source_runs("
 	int main() {
 		add_history(nullptr);
 		append_history(1,nullptr);
+		return 0;
 	}
 " HAVE_READLINE_HISTORY)

cmake/find_rt.cmake

 if (APPLE)
-	find_library (RT_LIBRARIES apple_rt)
+	# lib from libs/libcommon
+	set (RT_LIBRARIES "apple_rt")
 else ()
 	find_library (RT_LIBRARIES rt)
 endif ()

cmake/test_compiler.cmake

+include (CheckCXXSourceCompiles)
+
+set (TEST_FLAG "--no-pie")
+set (CMAKE_REQUIRED_FLAGS "${TEST_FLAG}")
+check_cxx_source_compiles("
+	int main() {
+		return 0;
+	}
+" HAVE_NO_PIE)
+
+set (CMAKE_REQUIRED_FLAGS "")