tools/llvm-config/CMakeLists.txt

   1 include(TestBigEndian)
   2
   3 include(FindPerl)
   4 if( NOT PERL_FOUND )
   5   message(FATAL_ERROR "Perl required but not found!")
   6 endif( NOT PERL_FOUND )
   7
   8 set(PERL ${PERL_EXECUTABLE})
   9 set(VERSION PACKAGE_VERSION)
  10 set(PREFIX ${LLVM_BINARY_DIR}) # TODO: Root for `make install'.
  11 set(abs_top_srcdir ${LLVM_MAIN_SRC_DIR})
  12 set(abs_top_builddir ${LLVM_BINARY_DIR})
  13 execute_process(COMMAND date
  14   OUTPUT_VARIABLE LLVM_CONFIGTIME
  15   OUTPUT_STRIP_TRAILING_WHITESPACE)
  16 # LLVM_ON_UNIX and LLVM_ON_WIN32 already set.
  17 # those are set to blank by `autoconf' on MinGW, so it seems they are not required:
  18 #set(LLVMGCCDIR "")
  19 #set(LLVMGCC "")
  20 #set(LLVMGXX "")
  21 test_big_endian(IS_BIG_ENDIAN)
  22 if( IS_BIG_ENDIAN )
  23   set(ENDIAN "big")
  24 else( IS_BIG_ENDIAN )
  25   set(ENDIAN "little")
  26 endif( IS_BIG_ENDIAN )
  27 set(SHLIBEXT ${LTDL_SHLIB_EXT})
  28 #EXEEXT already set.
  29 set(OS "${CMAKE_SYSTEM}")
  30 set(ARCH "${LLVM_NATIVE_ARCH}")
  31
  32 get_system_libs(LLVM_SYSTEM_LIBS_LIST)
  33 foreach(l ${LLVM_SYSTEM_LIBS_LIST})
  34   set(LLVM_SYSTEM_LIBS ${LLVM_SYSTEM_LIBS} "-l${l}")
  35 endforeach()
  36
  37 foreach(c ${LLVM_TARGETS_TO_BUILD})
  38   set(TARGETS_BUILT "${TARGETS_BUILT} ${c}")
  39 endforeach(c)
  40 set(TARGETS_TO_BUILD ${TARGETS_BUILT})
  41 set(TARGET_HAS_JIT "1")  # TODO
  42
  43 # Avoids replacement at config-time:
  44 set(LLVM_CPPFLAGS "@LLVM_CPPFLAGS@")
  45 set(LLVM_CFLAGS "@LLVM_CFLAGS@")
  46 set(LLVM_CXXFLAGS "@LLVM_CXXFLAGS@")
  47 set(LLVM_LDFLAGS "@LLVM_LDFLAGS@")
  48 set(LIBS "@LIBS@")
  49 set(LLVM_BUILDMODE "@LLVM_BUILDMODE@")
  50
  51 configure_file(
  52   ${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.in.in
  53   ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in
  54   @ONLY
  55 )
  56
  57 set(LIBDEPS ${CMAKE_CURRENT_BINARY_DIR}/LibDeps.txt)
  58 set(LIBDEPS_TMP ${CMAKE_CURRENT_BINARY_DIR}/LibDeps.txt.tmp)
  59 set(FINAL_LIBDEPS ${CMAKE_CURRENT_BINARY_DIR}/FinalLibDeps.txt)
  60 set(LLVM_CONFIG ${LLVM_TOOLS_BINARY_DIR}/llvm-config)
  61 set(LLVM_CONFIG_IN ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in)
  62
  63 if( CMAKE_CROSSCOMPILING )
  64   set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
  65 endif()
  66
  67 find_program(NM_PATH nm PATH_SUFFIXES /bin)
  68
  69 if( NOT NM_PATH )
  70   message(FATAL_ERROR "`nm' not found")
  71 endif()
  72
  73 get_property(llvm_libs GLOBAL PROPERTY LLVM_LIBS)
  74
  75 add_custom_command(OUTPUT ${LIBDEPS_TMP}
  76   COMMAND ${PERL_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/GenLibDeps.pl -flat ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/${CMAKE_CFG_INTDIR} ${NM_PATH} > ${LIBDEPS_TMP}
  77   DEPENDS ${llvm_libs}
  78   COMMENT "Regenerating ${LIBDEPS_TMP}")
  79
  80 add_custom_command(OUTPUT ${LIBDEPS}
  81   COMMAND ${CMAKE_COMMAND} -E copy_if_different ${LIBDEPS_TMP} ${LIBDEPS}
  82   DEPENDS ${LIBDEPS_TMP}
  83   COMMENT "Updating ${LIBDEPS} if necessary...")
  84
  85 # This must stop the build if find-cycles.pl returns error:
  86 add_custom_command(OUTPUT ${FINAL_LIBDEPS}
  87   COMMAND ${CMAKE_COMMAND} -E remove -f ${FINAL_LIBDEPS} ${FINAL_LIBDEPS}.tmp
  88   COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/find-cycles.pl < ${LIBDEPS} > ${FINAL_LIBDEPS}.tmp
  89   COMMAND ${CMAKE_COMMAND} -E copy ${FINAL_LIBDEPS}.tmp ${FINAL_LIBDEPS}
  90   DEPENDS ${LIBDEPS}
  91   COMMENT "Checking for cyclic dependencies between LLVM libraries.")
  92
  93 set(C_FLGS "${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
  94 set(CXX_FLGS "${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
  95 set(CPP_FLGS "${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
  96
  97 # We don't want certain flags on the output of
  98 # llvm-config --cflags --cxxflags
  99 macro(remove_option_from_llvm_config option)
 100   llvm_replace_compiler_option(C_FLGS "${option}" "")
 101   llvm_replace_compiler_option(CXX_FLGS "${option}" "")
 102   llvm_replace_compiler_option(CPP_FLGS "${option}" "")
 103 endmacro(remove_option_from_llvm_config)
 104 remove_option_from_llvm_config("-pedantic")
 105 remove_option_from_llvm_config("-Wall")
 106 remove_option_from_llvm_config("-W")
 107
 108 add_custom_command(OUTPUT ${LLVM_CONFIG}
 109   COMMAND echo 's!@LLVM_CPPFLAGS@!${CPP_FLGS}!' > temp.sed
 110   COMMAND echo 's!@LLVM_CFLAGS@!${C_FLGS}!' >> temp.sed
 111   COMMAND echo 's!@LLVM_CXXFLAGS@!${CXX_FLGS}!' >> temp.sed
 112   # TODO: Use general flags for linking! not just for shared libs:
 113   COMMAND echo 's!@LLVM_LDFLAGS@!${CMAKE_SHARED_LINKER_FLAGS}!' >> temp.sed
 114   COMMAND echo 's!@LIBS@!${LLVM_SYSTEM_LIBS}!' >> temp.sed
 115   COMMAND echo 's!@LLVM_BUILDMODE@!${CMAKE_BUILD_TYPE}!' >> temp.sed
 116   COMMAND sed -f temp.sed < ${LLVM_CONFIG_IN} > ${LLVM_CONFIG}
 117   COMMAND ${CMAKE_COMMAND} -E remove -f temp.sed
 118   COMMAND cat ${FINAL_LIBDEPS} >> ${LLVM_CONFIG}
 119   COMMAND chmod +x ${LLVM_CONFIG}
 120   DEPENDS ${FINAL_LIBDEPS} ${LLVM_CONFIG_IN}
 121   COMMENT "Building llvm-config script."
 122   )
 123
 124 add_custom_target(llvm-config.target ALL
 125   DEPENDS ${LLVM_CONFIG})
 126
 127 add_dependencies( llvm-config.target ${llvm_libs} )
 128
 129 # Make sure that llvm-config builds before the llvm tools, so we have
 130 # LibDeps.txt and can use it for updating the hard-coded library
 131 # dependencies on cmake/modules/LLVMLibDeps.cmake when the tools'
 132 # build fail due to outdated dependencies:
 133 set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} llvm-config.target)
 134
 135 install(FILES ${LLVM_CONFIG}
 136   PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
 137   WORLD_READ WORLD_EXECUTE
 138   DESTINATION bin)
 139
 140
 141 # Regeneration of library dependencies.
 142
 143 # See the comments at the end of cmake/modules/LLVMConfig.cmake for
 144 # notes and guidelines.
 145
 146 set(LLVMLibDeps ${LLVM_MAIN_SRC_DIR}/cmake/modules/LLVMLibDeps.cmake)
 147 set(LLVMLibDeps_TMP ${CMAKE_CURRENT_BINARY_DIR}/LLVMLibDeps.cmake.tmp)
 148
 149 add_custom_command(OUTPUT ${LLVMLibDeps_TMP}
 150   COMMAND sed -e s'@\\.a@@g' -e s'@\\.so@@g' -e 's@libLLVM@LLVM@g' -e 's@: @ @' -e 's@\\\(.*\\\)@set\(MSVC_LIB_DEPS_\\1\)@' ${FINAL_LIBDEPS} > ${LLVMLibDeps_TMP}
 151   COMMAND ${CMAKE_COMMAND} -E copy_if_different ${LLVMLibDeps_TMP} ${LLVMLibDeps}
 152   DEPENDS ${FINAL_LIBDEPS}
 153   COMMENT "Updating cmake library dependencies file ${LLVMLibDeps}"
 154   )
 155
 156 if( LLVM_TARGETS_TO_BUILD STREQUAL LLVM_ALL_TARGETS )
 157   add_custom_target(llvmlibdeps.target ALL DEPENDS ${LLVMLibDeps_TMP})
 158   add_dependencies(llvmlibdeps.target llvm-config.target)
 159   set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} llvmlibdeps.target)
 160 endif()
 161
 162 set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} PARENT_SCOPE)