xref: /aosp_15_r20/external/cronet/third_party/libc++abi/src/cmake/Modules/HandleLibcxxabiFlags.cmake (revision 6777b5387eb2ff775bb5750e3f5d96f37fb7352b) 
1# HandleLibcxxFlags - A set of macros used to setup the flags used to compile
2# and link libc++abi. These macros add flags to the following CMake variables.
3# - LIBCXXABI_COMPILE_FLAGS: flags used to compile libc++abi
4# - LIBCXXABI_LINK_FLAGS: flags used to link libc++abi
5# - LIBCXXABI_LIBRARIES: libraries to link libc++abi to.
6
7include(CheckCXXCompilerFlag)
8include(HandleFlags)
9
10unset(add_flag_if_supported)
11
12# Add a specified list of flags to both 'LIBCXXABI_COMPILE_FLAGS' and
13# 'LIBCXXABI_LINK_FLAGS'.
14macro(add_flags)
15  foreach(value ${ARGN})
16    list(APPEND LIBCXXABI_COMPILE_FLAGS ${value})
17    list(APPEND LIBCXXABI_LINK_FLAGS ${value})
18  endforeach()
19endmacro()
20
21# If the specified 'condition' is true then add a list of flags to both
22# 'LIBCXXABI_COMPILE_FLAGS' and 'LIBCXXABI_LINK_FLAGS'.
23macro(add_flags_if condition)
24  if (${condition})
25    add_flags(${ARGN})
26  endif()
27endmacro()
28
29# Add each flag in the list to LIBCXXABI_COMPILE_FLAGS and LIBCXXABI_LINK_FLAGS
30# if that flag is supported by the current compiler.
31macro(add_flags_if_supported)
32  foreach(flag ${ARGN})
33      mangle_name("${flag}" flagname)
34      check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
35      add_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
36  endforeach()
37endmacro()
38
39# Add a list of flags to 'LIBCXXABI_COMPILE_FLAGS'.
40macro(add_compile_flags)
41  foreach(f ${ARGN})
42    list(APPEND LIBCXXABI_COMPILE_FLAGS ${f})
43  endforeach()
44endmacro()
45
46# If 'condition' is true then add the specified list of flags to
47# 'LIBCXXABI_COMPILE_FLAGS'
48macro(add_compile_flags_if condition)
49  if (${condition})
50    add_compile_flags(${ARGN})
51  endif()
52endmacro()
53
54# For each specified flag, add that flag to 'LIBCXXABI_COMPILE_FLAGS' if the
55# flag is supported by the C++ compiler.
56macro(add_compile_flags_if_supported)
57  foreach(flag ${ARGN})
58      mangle_name("${flag}" flagname)
59      check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
60      add_compile_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
61  endforeach()
62endmacro()
63
64# For each specified flag, add that flag to 'LIBCXXABI_COMPILE_FLAGS' if the
65# flag is supported by the C compiler.
66macro(add_c_compile_flags_if_supported)
67  foreach(flag ${ARGN})
68      mangle_name("${flag}" flagname)
69      check_c_compiler_flag("${flag}" "C_SUPPORTS_${flagname}_FLAG")
70      add_compile_flags_if(C_SUPPORTS_${flagname}_FLAG ${flag})
71  endforeach()
72endmacro()
73
74# Add a list of flags to 'LIBCXXABI_LINK_FLAGS'.
75macro(add_link_flags)
76  foreach(f ${ARGN})
77    list(APPEND LIBCXXABI_LINK_FLAGS ${f})
78  endforeach()
79endmacro()
80
81# If 'condition' is true then add the specified list of flags to
82# 'LIBCXXABI_LINK_FLAGS'
83macro(add_link_flags_if condition)
84  if (${condition})
85    add_link_flags(${ARGN})
86  endif()
87endmacro()
88
89# For each specified flag, add that flag to 'LIBCXXABI_LINK_FLAGS' if the
90# flag is supported by the C++ compiler.
91macro(add_link_flags_if_supported)
92  foreach(flag ${ARGN})
93    mangle_name("${flag}" flagname)
94    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
95    add_link_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
96  endforeach()
97endmacro()
98
99# Add a list of libraries or link flags to 'LIBCXXABI_LIBRARIES'.
100macro(add_library_flags)
101  foreach(lib ${ARGN})
102    list(APPEND LIBCXXABI_LIBRARIES ${lib})
103  endforeach()
104endmacro()
105
106# if 'condition' is true then add the specified list of libraries and flags
107# to 'LIBCXXABI_LIBRARIES'.
108macro(add_library_flags_if condition)
109  if(${condition})
110    add_library_flags(${ARGN})
111  endif()
112endmacro()
113