1# Generate C code in the file provided as OUTPUT that describes the properties
2# of all components. This C code is suitable for inclusion in `llvm-config`
3function(LLVMBuildGenerateCFragment)
4  cmake_parse_arguments(ARG "" "OUTPUT" "" ${ARGN})
5
6  # Write C header
7  #################
8  get_property(llvmbuild_components GLOBAL PROPERTY LLVM_COMPONENT_LIBS)
9  foreach(llvmbuild_component ${llvmbuild_components})
10    string(REGEX REPLACE "^LLVM" "" component_name ${llvmbuild_component})
11    list(APPEND all_component_libdeps ${component_name})
12  endforeach()
13  list(APPEND llvmbuild_components all)
14  foreach(llvm_component all-targets Engine Native NativeCodeGen ${LLVM_TARGETS_TO_BUILD})
15    list(APPEND llvmbuild_components ${llvm_component})
16    list(APPEND all_component_libdeps ${llvm_component})
17  endforeach()
18
19  list(LENGTH llvmbuild_components llvmbuild_components_size)
20  file(WRITE ${ARG_OUTPUT}
21  "
22  struct AvailableComponent {
23    /// The name of the component.
24    const char *Name;
25
26    /// The name of the library for this component (or NULL).
27    const char *Library;
28
29    /// Whether the component is installed.
30    bool IsInstalled;
31
32    /// The list of libraries required when linking this component.
33    const char *RequiredLibraries[${llvmbuild_components_size}];
34  } AvailableComponents[${llvmbuild_components_size}] = {
35  ")
36
37  foreach(llvmbuild_component ${llvmbuild_components})
38    if(llvmbuild_component STREQUAL "all")
39      unset(llvmbuild_libname)
40      set(llvmbuild_libdeps ${all_component_libdeps})
41    else()
42      get_property(llvmbuild_libname TARGET ${llvmbuild_component} PROPERTY LLVM_COMPONENT_NAME)
43      get_property(llvmbuild_libdeps TARGET ${llvmbuild_component} PROPERTY LLVM_LINK_COMPONENTS)
44    endif()
45    string(TOLOWER ${llvmbuild_component} llvmbuild_componentname)
46
47    if(NOT llvmbuild_libname)
48      set(llvmbuild_llvmlibname nullptr)
49      string(TOLOWER ${llvmbuild_component} llvmbuild_libname)
50    else()
51      set(llvmbuild_llvmlibname "\"LLVM${llvmbuild_libname}\"")
52      string(TOLOWER ${llvmbuild_libname} llvmbuild_libname)
53    endif()
54
55    set(llvmbuild_clibdeps "")
56    foreach(llvmbuild_libdep ${llvmbuild_libdeps})
57      get_property(llvmbuild_libdepname GLOBAL PROPERTY LLVM_COMPONENT_NAME_${llvmbuild_libdep})
58      if(NOT llvmbuild_libdepname)
59        string(TOLOWER ${llvmbuild_libdep} llvmbuild_clibdep)
60      else()
61        string(TOLOWER ${llvmbuild_libdepname} llvmbuild_clibdep)
62      endif()
63      list(APPEND llvmbuild_clibdeps ${llvmbuild_clibdep})
64    endforeach()
65
66    list(TRANSFORM llvmbuild_clibdeps PREPEND "\"")
67    list(TRANSFORM llvmbuild_clibdeps APPEND "\"")
68    list(JOIN llvmbuild_clibdeps ", " llvmbuild_clibdeps_joint)
69    list(APPEND llvmbuild_centries "{ \"${llvmbuild_libname}\", ${llvmbuild_llvmlibname}, true, {${llvmbuild_clibdeps_joint}} },\n")
70  endforeach()
71
72  list(SORT llvmbuild_centries)
73  foreach(llvmbuild_centry ${llvmbuild_centries})
74    file(APPEND ${ARG_OUTPUT} "${llvmbuild_centry}")
75  endforeach()
76  file(APPEND ${ARG_OUTPUT} "};")
77endfunction()
78
79# Resolve cross-component dependencies, for each available component.
80function(LLVMBuildResolveComponentsLink)
81
82  # the native target may not be enabled when cross compiling
83  if(TARGET ${LLVM_NATIVE_ARCH})
84    get_property(llvm_has_jit_native TARGET ${LLVM_NATIVE_ARCH} PROPERTY LLVM_HAS_JIT)
85  else()
86    set(llvm_has_jit_native OFF)
87  endif()
88
89  if(llvm_has_jit_native)
90    set_property(TARGET Engine APPEND PROPERTY LLVM_LINK_COMPONENTS "MCJIT" "Native")
91  else()
92    set_property(TARGET Engine APPEND PROPERTY LLVM_LINK_COMPONENTS "Interpreter")
93  endif()
94
95  get_property(llvm_components GLOBAL PROPERTY LLVM_COMPONENT_LIBS)
96  foreach(llvm_component ${llvm_components})
97    get_property(link_components TARGET ${llvm_component} PROPERTY LLVM_LINK_COMPONENTS)
98    llvm_map_components_to_libnames(llvm_libs ${link_components})
99    if(llvm_libs)
100      get_property(libtype TARGET ${llvm_component} PROPERTY LLVM_LIBTYPE)
101      target_link_libraries(${llvm_component} ${libtype} ${llvm_libs})
102    endif()
103  endforeach()
104endfunction()
105