1if( WIN32 AND NOT CYGWIN )
2  # We consider Cygwin as another Unix
3  set(PURE_WINDOWS 1)
4endif()
5
6include(CheckIncludeFile)
7include(CheckLibraryExists)
8include(CheckSymbolExists)
9include(CheckFunctionExists)
10include(CheckCXXSourceCompiles)
11include(TestBigEndian)
12
13if( UNIX AND NOT BEOS )
14  # Used by check_symbol_exists:
15  set(CMAKE_REQUIRED_LIBRARIES m)
16endif()
17
18# Helper macros and functions
19macro(add_cxx_include result files)
20  set(${result} "")
21  foreach (file_name ${files})
22     set(${result} "${${result}}#include<${file_name}>\n")
23  endforeach()
24endmacro(add_cxx_include files result)
25
26function(check_type_exists type files variable)
27  add_cxx_include(includes "${files}")
28  CHECK_CXX_SOURCE_COMPILES("
29    ${includes} ${type} typeVar;
30    int main() {
31        return 0;
32    }
33    " ${variable})
34endfunction()
35
36# include checks
37check_include_file(argz.h HAVE_ARGZ_H)
38check_include_file(assert.h HAVE_ASSERT_H)
39check_include_file(ctype.h HAVE_CTYPE_H)
40check_include_file(dirent.h HAVE_DIRENT_H)
41check_include_file(dl.h HAVE_DL_H)
42check_include_file(dld.h HAVE_DLD_H)
43check_include_file(dlfcn.h HAVE_DLFCN_H)
44check_include_file(errno.h HAVE_ERRNO_H)
45check_include_file(execinfo.h HAVE_EXECINFO_H)
46check_include_file(fcntl.h HAVE_FCNTL_H)
47check_include_file(inttypes.h HAVE_INTTYPES_H)
48check_include_file(limits.h HAVE_LIMITS_H)
49check_include_file(link.h HAVE_LINK_H)
50check_include_file(malloc.h HAVE_MALLOC_H)
51check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
52check_include_file(memory.h HAVE_MEMORY_H)
53check_include_file(ndir.h HAVE_NDIR_H)
54if( NOT PURE_WINDOWS )
55  check_include_file(pthread.h HAVE_PTHREAD_H)
56endif()
57check_include_file(setjmp.h HAVE_SETJMP_H)
58check_include_file(signal.h HAVE_SIGNAL_H)
59check_include_file(stdint.h HAVE_STDINT_H)
60check_include_file(stdio.h HAVE_STDIO_H)
61check_include_file(stdlib.h HAVE_STDLIB_H)
62check_include_file(string.h HAVE_STRING_H)
63check_include_file(strings.h HAVE_STRINGS_H)
64check_include_file(sys/dir.h HAVE_SYS_DIR_H)
65check_include_file(sys/dl.h HAVE_SYS_DL_H)
66check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
67check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
68check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
69check_include_file(sys/param.h HAVE_SYS_PARAM_H)
70check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
71check_include_file(sys/stat.h HAVE_SYS_STAT_H)
72check_include_file(sys/time.h HAVE_SYS_TIME_H)
73check_include_file(sys/types.h HAVE_SYS_TYPES_H)
74check_include_file(sys/uio.h HAVE_SYS_UIO_H)
75check_include_file(sys/wait.h HAVE_SYS_WAIT_H)
76check_include_file(termios.h HAVE_TERMIOS_H)
77check_include_file(unistd.h HAVE_UNISTD_H)
78check_include_file(utime.h HAVE_UTIME_H)
79check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
80check_include_file(windows.h HAVE_WINDOWS_H)
81check_include_file(fenv.h HAVE_FENV_H)
82check_include_file(mach/mach.h HAVE_MACH_MACH_H)
83check_include_file(mach-o/dyld.h HAVE_MACH_O_DYLD_H)
84
85# library checks
86if( NOT PURE_WINDOWS )
87  check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
88  check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
89  check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
90  check_library_exists(dl dlopen "" HAVE_LIBDL)
91endif()
92
93# function checks
94check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
95check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
96check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
97check_symbol_exists(isatty unistd.h HAVE_ISATTY)
98check_symbol_exists(index strings.h HAVE_INDEX)
99check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH)
100check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H)
101check_symbol_exists(finite ieeefp.h HAVE_FINITE_IN_IEEEFP_H)
102check_symbol_exists(isnan cmath HAVE_ISNAN_IN_CMATH)
103check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
104check_symbol_exists(ceilf math.h HAVE_CEILF)
105check_symbol_exists(floorf math.h HAVE_FLOORF)
106check_symbol_exists(fmodf math.h HAVE_FMODF)
107if( HAVE_SETJMP_H )
108  check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
109  check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)
110  check_symbol_exists(siglongjmp setjmp.h HAVE_SIGLONGJMP)
111  check_symbol_exists(sigsetjmp setjmp.h HAVE_SIGSETJMP)
112endif()
113if( HAVE_SYS_UIO_H )
114  check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
115endif()
116check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF)
117check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
118check_symbol_exists(malloc_zone_statistics malloc/malloc.h
119                    HAVE_MALLOC_ZONE_STATISTICS)
120check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP)
121check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP)
122check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP)
123check_symbol_exists(closedir "sys/types.h;dirent.h" HAVE_CLOSEDIR)
124check_symbol_exists(opendir "sys/types.h;dirent.h" HAVE_OPENDIR)
125check_symbol_exists(readdir "sys/types.h;dirent.h" HAVE_READDIR)
126check_symbol_exists(getcwd unistd.h HAVE_GETCWD)
127check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
128check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
129check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
130check_symbol_exists(pread unistd.h HAVE_PREAD)
131check_symbol_exists(rindex strings.h HAVE_RINDEX)
132check_symbol_exists(strchr string.h HAVE_STRCHR)
133check_symbol_exists(strcmp string.h HAVE_STRCMP)
134check_symbol_exists(strdup string.h HAVE_STRDUP)
135check_symbol_exists(strrchr string.h HAVE_STRRCHR)
136if( NOT PURE_WINDOWS )
137  check_symbol_exists(pthread_mutex_lock pthread.h HAVE_PTHREAD_MUTEX_LOCK)
138endif()
139check_symbol_exists(sbrk unistd.h HAVE_SBRK)
140check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48)
141if( HAVE_RAND48_SRAND48 )
142  check_symbol_exists(lrand48 stdlib.h HAVE_RAND48_LRAND48)
143  if( HAVE_RAND48_LRAND48 )
144    check_symbol_exists(drand48 stdlib.h HAVE_RAND48_DRAND48)
145    if( HAVE_RAND48_DRAND48 )
146      set(HAVE_RAND48 1 CACHE INTERNAL "are srand48/lrand48/drand48 available?")
147    endif()
148  endif()
149endif()
150check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
151check_symbol_exists(strtoq stdlib.h HAVE_STRTOQ)
152check_symbol_exists(strerror string.h HAVE_STRERROR)
153check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
154check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
155check_symbol_exists(memcpy string.h HAVE_MEMCPY)
156check_symbol_exists(memmove string.h HAVE_MEMMOVE)
157check_symbol_exists(setenv stdlib.h HAVE_SETENV)
158if( PURE_WINDOWS )
159  check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)
160
161  check_function_exists(_alloca HAVE__ALLOCA)
162  check_function_exists(__alloca HAVE___ALLOCA)
163  check_function_exists(__chkstk HAVE___CHKSTK)
164  check_function_exists(___chkstk HAVE____CHKSTK)
165
166  check_function_exists(__ashldi3 HAVE___ASHLDI3)
167  check_function_exists(__ashrdi3 HAVE___ASHRDI3)
168  check_function_exists(__divdi3 HAVE___DIVDI3)
169  check_function_exists(__fixdfdi HAVE___FIXDFDI)
170  check_function_exists(__fixsfdi HAVE___FIXSFDI)
171  check_function_exists(__floatdidf HAVE___FLOATDIDF)
172  check_function_exists(__lshrdi3 HAVE___LSHRDI3)
173  check_function_exists(__moddi3 HAVE___MODDI3)
174  check_function_exists(__udivdi3 HAVE___UDIVDI3)
175  check_function_exists(__umoddi3 HAVE___UMODDI3)
176
177  check_function_exists(__main HAVE___MAIN)
178  check_function_exists(__cmpdi2 HAVE___CMPDI2)
179endif()
180if( HAVE_ARGZ_H )
181  check_symbol_exists(argz_append argz.h HAVE_ARGZ_APPEND)
182  check_symbol_exists(argz_create_sep argz.h HAVE_ARGZ_CREATE_SEP)
183  check_symbol_exists(argz_insert argz.h HAVE_ARGZ_INSERT)
184  check_symbol_exists(argz_next argz.h HAVE_ARGZ_NEXT)
185  check_symbol_exists(argz_stringify argz.h HAVE_ARGZ_STRINGIFY)
186endif()
187if( HAVE_DLFCN_H )
188  if( HAVE_LIBDL )
189    list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
190  endif()
191  check_symbol_exists(dlerror dlfcn.h HAVE_DLERROR)
192  check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN)
193  if( HAVE_LIBDL )
194    list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl)
195  endif()
196endif()
197
198check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
199if( LLVM_USING_GLIBC )
200  add_llvm_definitions( -D_GNU_SOURCE )
201endif()
202
203set(headers "")
204if (HAVE_SYS_TYPES_H)
205  set(headers ${headers} "sys/types.h")
206endif()
207
208if (HAVE_INTTYPES_H)
209  set(headers ${headers} "inttypes.h")
210endif()
211
212if (HAVE_STDINT_H)
213  set(headers ${headers} "stdint.h")
214endif()
215
216check_type_exists(int64_t "${headers}" HAVE_INT64_T)
217check_type_exists(uint64_t "${headers}" HAVE_UINT64_T)
218check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T)
219check_type_exists(error_t errno.h HAVE_ERROR_T)
220
221# available programs checks
222function(llvm_find_program name)
223  string(TOUPPER ${name} NAME)
224  string(REGEX REPLACE "\\." "_" NAME ${NAME})
225  find_program(LLVM_PATH_${NAME} ${name})
226  mark_as_advanced(LLVM_PATH_${NAME})
227  if(LLVM_PATH_${NAME})
228    set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?")
229    mark_as_advanced(HAVE_${NAME})
230  else(LLVM_PATH_${NAME})
231    set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
232  endif(LLVM_PATH_${NAME})
233endfunction()
234
235llvm_find_program(gv)
236llvm_find_program(circo)
237llvm_find_program(twopi)
238llvm_find_program(neato)
239llvm_find_program(fdp)
240llvm_find_program(dot)
241llvm_find_program(dotty)
242llvm_find_program(xdot.py)
243
244if( LLVM_ENABLE_FFI )
245  find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
246  if( FFI_INCLUDE_PATH )
247    set(FFI_HEADER ffi.h CACHE INTERNAL "")
248    set(HAVE_FFI_H 1 CACHE INTERNAL "")
249  else()
250    find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
251    if( FFI_INCLUDE_PATH )
252      set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
253      set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
254    endif()
255  endif()
256
257  if( NOT FFI_HEADER )
258    message(FATAL_ERROR "libffi includes are not found.")
259  endif()
260
261  find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
262  if( NOT FFI_LIBRARY_PATH )
263    message(FATAL_ERROR "libffi is not found.")
264  endif()
265
266  list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
267  list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
268  check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
269  list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
270  list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
271else()
272  unset(HAVE_FFI_FFI_H CACHE)
273  unset(HAVE_FFI_H CACHE)
274  unset(HAVE_FFI_CALL CACHE)
275endif( LLVM_ENABLE_FFI )
276
277# Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported.
278include(CheckAtomic)
279
280if( LLVM_ENABLE_PIC )
281  set(ENABLE_PIC 1)
282else()
283  set(ENABLE_PIC 0)
284endif()
285
286include(CheckCXXCompilerFlag)
287
288check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)
289
290include(GetHostTriple)
291get_host_triple(LLVM_HOST_TRIPLE)
292
293# By default, we target the host, but this can be overridden at CMake
294# invocation time.
295set(LLVM_DEFAULT_TARGET_TRIPLE "${LLVM_HOST_TRIPLE}")
296set(TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}")
297
298# Determine the native architecture.
299string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
300if( LLVM_NATIVE_ARCH STREQUAL "host" )
301  string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE})
302endif ()
303
304if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
305  set(LLVM_NATIVE_ARCH X86)
306elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
307  set(LLVM_NATIVE_ARCH X86)
308elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
309  set(LLVM_NATIVE_ARCH X86)
310elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
311  set(LLVM_NATIVE_ARCH X86)
312elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
313  set(LLVM_NATIVE_ARCH Sparc)
314elseif (LLVM_NATIVE_ARCH MATCHES "powerpc")
315  set(LLVM_NATIVE_ARCH PowerPC)
316elseif (LLVM_NATIVE_ARCH MATCHES "arm")
317  set(LLVM_NATIVE_ARCH ARM)
318elseif (LLVM_NATIVE_ARCH MATCHES "mips")
319  set(LLVM_NATIVE_ARCH Mips)
320elseif (LLVM_NATIVE_ARCH MATCHES "xcore")
321  set(LLVM_NATIVE_ARCH XCore)
322elseif (LLVM_NATIVE_ARCH MATCHES "msp430")
323  set(LLVM_NATIVE_ARCH MSP430)
324else ()
325  message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}")
326endif ()
327
328list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX)
329if (NATIVE_ARCH_IDX EQUAL -1)
330  message(STATUS
331    "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code")
332else ()
333  message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}")
334  set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target)
335  set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo)
336  set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC)
337  set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)
338
339  # We don't have an ASM parser for all architectures yet.
340  if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
341    set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
342  endif ()
343
344  # We don't have an disassembler for all architectures yet.
345  if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
346    set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
347  endif ()
348endif ()
349
350if( MINGW )
351  set(HAVE_LIBIMAGEHLP 1)
352  set(HAVE_LIBPSAPI 1)
353  # TODO: Check existence of libraries.
354  #   include(CheckLibraryExists)
355  #   CHECK_LIBRARY_EXISTS(imagehlp ??? . HAVE_LIBIMAGEHLP)
356endif( MINGW )
357
358if( MSVC )
359  set(error_t int)
360  set(LTDL_SHLIBPATH_VAR "PATH")
361  set(LTDL_SYSSEARCHPATH "")
362  set(LTDL_DLOPEN_DEPLIBS 1)
363  set(SHLIBEXT ".lib")
364  set(LTDL_OBJDIR "_libs")
365  set(HAVE_STRTOLL 1)
366  set(strtoll "_strtoi64")
367  set(strtoull "_strtoui64")
368  set(stricmp "_stricmp")
369  set(strdup "_strdup")
370else( MSVC )
371  set(LTDL_SHLIBPATH_VAR "LD_LIBRARY_PATH")
372  set(LTDL_SYSSEARCHPATH "") # TODO
373  set(LTDL_DLOPEN_DEPLIBS 0)  # TODO
374endif( MSVC )
375
376if( PURE_WINDOWS )
377  CHECK_CXX_SOURCE_COMPILES("
378    #include <windows.h>
379    #include <imagehlp.h>
380    extern \"C\" void foo(PENUMLOADED_MODULES_CALLBACK);
381    extern \"C\" void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID));
382    int main(){return 0;}"
383    HAVE_ELMCB_PCSTR)
384  if( HAVE_ELMCB_PCSTR )
385    set(WIN32_ELMCB_PCSTR "PCSTR")
386  else()
387    set(WIN32_ELMCB_PCSTR "PSTR")
388  endif()
389endif( PURE_WINDOWS )
390
391# FIXME: Signal handler return type, currently hardcoded to 'void'
392set(RETSIGTYPE void)
393
394if( LLVM_ENABLE_THREADS )
395  # Check if threading primitives aren't supported on this platform
396  if( NOT HAVE_PTHREAD_H AND NOT WIN32 )
397    set(LLVM_ENABLE_THREADS 0)
398  endif()
399endif()
400
401if( LLVM_ENABLE_THREADS )
402  message(STATUS "Threads enabled.")
403else( LLVM_ENABLE_THREADS )
404  message(STATUS "Threads disabled.")
405endif()
406
407set(LLVM_PREFIX ${CMAKE_INSTALL_PREFIX})
408