xref: /llvm-project/libunwind/cmake/Modules/HandleLibunwindFlags.cmake (revision 141471a0cbf2d029899b29baf1a54a238f6067f9) 
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# - LIBUNWIND_COMPILE_FLAGS: flags used to compile libunwind
4# - LIBUNWIND_LINK_FLAGS: flags used to link libunwind
5# - LIBUNWIND_LIBRARIES: libraries to link libunwind to.
6
7include(CheckCCompilerFlag)
8include(CheckCXXCompilerFlag)
9include(HandleFlags)
10
11unset(add_flag_if_supported)
12
13# Add a list of flags to 'LIBUNWIND_COMPILE_FLAGS'.
14macro(add_compile_flags)
15  foreach(f ${ARGN})
16    list(APPEND LIBUNWIND_COMPILE_FLAGS ${f})
17  endforeach()
18endmacro()
19
20# If 'condition' is true then add the specified list of flags to
21# 'LIBUNWIND_COMPILE_FLAGS'
22macro(add_compile_flags_if condition)
23  if (${condition})
24    add_compile_flags(${ARGN})
25  endif()
26endmacro()
27
28# For each specified flag, add that flag to 'LIBUNWIND_COMPILE_FLAGS' if the
29# flag is supported by the C++ compiler.
30macro(add_compile_flags_if_supported)
31  foreach(flag ${ARGN})
32      mangle_name("${flag}" flagname)
33      check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
34      add_compile_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
35  endforeach()
36endmacro()
37
38# Add a list of flags to 'LIBUNWIND_C_FLAGS'.
39macro(add_c_flags)
40  foreach(f ${ARGN})
41    list(APPEND LIBUNWIND_C_FLAGS ${f})
42  endforeach()
43endmacro()
44
45# If 'condition' is true then add the specified list of flags to
46# 'LIBUNWIND_C_FLAGS'
47macro(add_c_flags_if condition)
48  if (${condition})
49    add_c_flags(${ARGN})
50  endif()
51endmacro()
52
53# Add a list of flags to 'LIBUNWIND_CXX_FLAGS'.
54macro(add_cxx_flags)
55  foreach(f ${ARGN})
56    list(APPEND LIBUNWIND_CXX_FLAGS ${f})
57  endforeach()
58endmacro()
59
60# If 'condition' is true then add the specified list of flags to
61# 'LIBUNWIND_CXX_FLAGS'
62macro(add_cxx_flags_if condition)
63  if (${condition})
64    add_cxx_flags(${ARGN})
65  endif()
66endmacro()
67
68# For each specified flag, add that flag to 'LIBUNWIND_CXX_FLAGS' if the
69# flag is supported by the C compiler.
70macro(add_cxx_compile_flags_if_supported)
71  foreach(flag ${ARGN})
72      mangle_name("${flag}" flagname)
73      check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
74      add_cxx_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
75  endforeach()
76endmacro()
77
78# Add a list of flags to 'LIBUNWIND_LINK_FLAGS'.
79macro(add_link_flags)
80  foreach(f ${ARGN})
81    list(APPEND LIBUNWIND_LINK_FLAGS ${f})
82  endforeach()
83endmacro()
84
85# If 'condition' is true then add the specified list of flags to
86# 'LIBUNWIND_LINK_FLAGS'
87macro(add_link_flags_if condition)
88  if (${condition})
89    add_link_flags(${ARGN})
90  endif()
91endmacro()
92
93# For each specified flag, add that flag to 'LIBUNWIND_LINK_FLAGS' if the
94# flag is supported by the C++ compiler.
95macro(add_link_flags_if_supported)
96  foreach(flag ${ARGN})
97    mangle_name("${flag}" flagname)
98    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
99    add_link_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
100  endforeach()
101endmacro()
102
103# Add a list of libraries or link flags to 'LIBUNWIND_LIBRARIES'.
104macro(add_library_flags)
105  foreach(lib ${ARGN})
106    list(APPEND LIBUNWIND_LIBRARIES ${lib})
107  endforeach()
108endmacro()
109
110# if 'condition' is true then add the specified list of libraries and flags
111# to 'LIBUNWIND_LIBRARIES'.
112macro(add_library_flags_if condition)
113  if(${condition})
114    add_library_flags(${ARGN})
115  endif()
116endmacro()
117