blob: acf0d2df366cf6770fe230e4fd42a9b15fe5ed6a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# This test will verify if CheckSymbolExists only report symbols available
# for linking that really are. You can find some documentation on this in
# bug 11333 where we found out that gcc would optimize out the actual
# reference to the symbol, so symbols that are in fact _not_ available in the
# given libraries (but seen in header) were reported as present.
#
# If you change this test do not forget to change the CheckCXXSymbolExists
# test, too.
project(CheckSymbolExists C)
cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
set(CMAKE_REQUIRED_INCLUDES "${CMAKE_CURRENT_SOURCE_DIR}")
include(CheckSymbolExists)
foreach(_config_type Release RelWithDebInfo MinSizeRel Debug)
set(CMAKE_TRY_COMPILE_CONFIGURATION ${_config_type})
unset(CSE_RESULT_${_config_type} CACHE)
message(STATUS "Testing configuration ${_config_type}")
check_symbol_exists(non_existent_function_for_symbol_test "cm_cse.h" CSE_RESULT_${_config_type})
if (CSE_RESULT_${_config_type})
message(SEND_ERROR "CheckSymbolExists reported a nonexistent symbol as existing in configuration ${_config_type}")
endif (CSE_RESULT_${_config_type})
endforeach()
set(CMAKE_TRY_COMPILE_CONFIGURATION ${CMAKE_BUILD_TYPE})
unset(CSE_RESULT_ERRNO CACHE)
check_symbol_exists(errno "errno.h" CSE_RESULT_ERRNO)
if (NOT CSE_RESULT_ERRNO)
message(SEND_ERROR "CheckSymbolExists did not find errno in <errno.h>")
else (NOT CSE_RESULT_ERRNO)
message(STATUS "errno found as expected")
endif (NOT CSE_RESULT_ERRNO)
if (CMAKE_COMPILER_IS_GNUCC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3")
unset(CSE_RESULT_O3 CACHE)
message(STATUS "Testing with optimization -O3")
check_symbol_exists(non_existent_function_for_symbol_test "cm_cse.h" CSE_RESULT_O3)
if (CSE_RESULT_O3)
message(SEND_ERROR "CheckSymbolExists reported a nonexistent symbol as existing with optimization -O3")
endif (CSE_RESULT_O3)
endif (CMAKE_COMPILER_IS_GNUCC)
|
