blob: 970462c8b2ee7a9404abced90b7b748751ee09e3 (
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
include(AddIfFlagCompiles)
# Makes +/- operations on void pointers be considered an error
# https://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html
add_if_flag_compiles(-Werror=pointer-arith CMAKE_C_FLAGS)
# Generates error whenever a function is used before being declared
# https://gcc.gnu.org/onlinedocs/gcc-4.0.1/gcc/Warning-Options.html
add_if_flag_compiles(-Werror=implicit-function-declaration CMAKE_C_FLAGS)
# Allows some casting of pointers without generating a warning
add_if_flag_compiles(-fno-strict-aliasing CMAKE_C_FLAGS)
if (ENABLE_MSAN AND ENABLE_ASAN)
# MSAN and ASAN both work on memory - ASAN does more things
MESSAGE(WARNING "Compiling with both AddressSanitizer and MemorySanitizer is not recommended")
endif()
if (ENABLE_ASAN)
# If enabled it would generate errors/warnings for all kinds of memory errors
# (like returning a stack variable by reference)
# https://clang.llvm.org/docs/AddressSanitizer.html
add_if_flag_compiles(-fno-omit-frame-pointer CMAKE_C_FLAGS CMAKE_LINKER_FLAGS)
add_if_flag_compiles(-fsanitize=address CMAKE_C_FLAGS CMAKE_LINKER_FLAGS)
endif()
if (ENABLE_UBSAN)
# If enabled this will generate errors for undefined behavior points
# (like adding +1 to the maximum int value)
# https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html
add_if_flag_compiles(-fno-omit-frame-pointer CMAKE_C_FLAGS CMAKE_LINKER_FLAGS)
add_if_flag_compiles(-fsanitize=undefined CMAKE_C_FLAGS CMAKE_LINKER_FLAGS)
endif()
if (ENABLE_MSAN)
# If enabled this will generate warnings for places where uninitialized memory is used
# https://clang.llvm.org/docs/MemorySanitizer.html
add_if_flag_compiles(-fno-omit-frame-pointer CMAKE_C_FLAGS CMAKE_LINKER_FLAGS)
add_if_flag_compiles(-fsanitize=memory CMAKE_C_FLAGS CMAKE_LINKER_FLAGS)
endif()
if(CMAKE_VERSION VERSION_LESS "3.1")
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
add_if_flag_compiles(-std=gnu99 CMAKE_C_FLAGS)
endif()
else()
set (CMAKE_C_STANDARD 99)
endif()
if(${PLATFORM} MATCHES "Android")
# If enabled will remove dead code during the linking process
# https://gcc.gnu.org/onlinedocs/gnat_ugn/Compilation-options.html
add_if_flag_compiles(-ffunction-sections CMAKE_C_FLAGS)
# If enabled will generate some exception data (usually disabled for C programs)
# https://gcc.gnu.org/onlinedocs/gcc-4.2.4/gcc/Code-Gen-Options.html
add_if_flag_compiles(-funwind-tables CMAKE_C_FLAGS)
# If enabled adds stack protection guards around functions that allocate memory
# https://www.keil.com/support/man/docs/armclang_ref/armclang_ref_cjh1548250046139.htm
add_if_flag_compiles(-fstack-protector-strong CMAKE_C_FLAGS)
# Marks that the library will not be compiled with an executable stack
add_if_flag_compiles(-Wa,--noexecstack CMAKE_C_FLAGS)
# Do not expand symbolic links or resolve paths like "/./" or "/../", etc.
# https://gcc.gnu.org/onlinedocs/gcc/Directory-Options.html
add_if_flag_compiles(-no-canonical-prefixes CMAKE_C_FLAGS)
endif()
|
