Remove -arm-enable-ehabi from Android build rules. It's enabled by default.
[oota-llvm.git] / cmake / config-ix.cmake
1 if( WIN32 AND NOT CYGWIN )
2   # We consider Cygwin as another Unix
3   set(PURE_WINDOWS 1)
4 endif()
5
6 include(CheckIncludeFile)
7 include(CheckIncludeFileCXX)
8 include(CheckLibraryExists)
9 include(CheckSymbolExists)
10 include(CheckFunctionExists)
11 include(CheckCXXSourceCompiles)
12 include(TestBigEndian)
13
14 if( UNIX AND NOT BEOS )
15   # Used by check_symbol_exists:
16   set(CMAKE_REQUIRED_LIBRARIES m)
17 endif()
18
19 # Helper macros and functions
20 macro(add_cxx_include result files)
21   set(${result} "")
22   foreach (file_name ${files})
23      set(${result} "${${result}}#include<${file_name}>\n")
24   endforeach()
25 endmacro(add_cxx_include files result)
26
27 function(check_type_exists type files variable)
28   add_cxx_include(includes "${files}")
29   CHECK_CXX_SOURCE_COMPILES("
30     ${includes} ${type} typeVar;
31     int main() {
32         return 0;
33     }
34     " ${variable})
35 endfunction()
36
37 # include checks
38 check_include_file_cxx(cxxabi.h HAVE_CXXABI_H)
39 check_include_file(dirent.h HAVE_DIRENT_H)
40 check_include_file(dlfcn.h HAVE_DLFCN_H)
41 check_include_file(errno.h HAVE_ERRNO_H)
42 check_include_file(execinfo.h HAVE_EXECINFO_H)
43 check_include_file(fcntl.h HAVE_FCNTL_H)
44 check_include_file(inttypes.h HAVE_INTTYPES_H)
45 check_include_file(limits.h HAVE_LIMITS_H)
46 check_include_file(malloc.h HAVE_MALLOC_H)
47 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
48 check_include_file(ndir.h HAVE_NDIR_H)
49 if( NOT PURE_WINDOWS )
50   check_include_file(pthread.h HAVE_PTHREAD_H)
51 endif()
52 check_include_file(sanitizer/msan_interface.h HAVE_SANITIZER_MSAN_INTERFACE_H)
53 check_include_file(signal.h HAVE_SIGNAL_H)
54 check_include_file(stdint.h HAVE_STDINT_H)
55 check_include_file(sys/dir.h HAVE_SYS_DIR_H)
56 check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
57 check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
58 check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
59 check_include_file(sys/param.h HAVE_SYS_PARAM_H)
60 check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
61 check_include_file(sys/stat.h HAVE_SYS_STAT_H)
62 check_include_file(sys/time.h HAVE_SYS_TIME_H)
63 check_include_file(sys/uio.h HAVE_SYS_UIO_H)
64 check_include_file(sys/wait.h HAVE_SYS_WAIT_H)
65 check_include_file(termios.h HAVE_TERMIOS_H)
66 check_include_file(unistd.h HAVE_UNISTD_H)
67 check_include_file(utime.h HAVE_UTIME_H)
68 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
69 check_include_file(zlib.h HAVE_ZLIB_H)
70 check_include_file(fenv.h HAVE_FENV_H)
71 check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT)
72 check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT)
73
74 check_include_file(mach/mach.h HAVE_MACH_MACH_H)
75 check_include_file(mach-o/dyld.h HAVE_MACH_O_DYLD_H)
76
77 # library checks
78 if( NOT PURE_WINDOWS )
79   check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
80   if (HAVE_LIBPTHREAD)
81     check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
82     check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
83     check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
84   else()
85     # this could be Android
86     check_library_exists(c pthread_create "" PTHREAD_IN_LIBC)
87     if (PTHREAD_IN_LIBC)
88       check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
89       check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
90       check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
91     endif()
92   endif()
93   check_library_exists(dl dlopen "" HAVE_LIBDL)
94   check_library_exists(rt clock_gettime "" HAVE_LIBRT)
95   if (LLVM_ENABLE_ZLIB)
96     check_library_exists(z compress2 "" HAVE_LIBZ)
97   else()
98     set(HAVE_LIBZ 0)
99   endif()
100   if(LLVM_ENABLE_TERMINFO)
101     set(HAVE_TERMINFO 0)
102     foreach(library tinfo terminfo curses ncurses ncursesw)
103       string(TOUPPER ${library} library_suffix)
104       check_library_exists(${library} setupterm "" HAVE_TERMINFO_${library_suffix})
105       if(HAVE_TERMINFO_${library_suffix})
106         set(HAVE_TERMINFO 1)
107         set(TERMINFO_LIBS "${library}")
108         break()
109       endif()
110     endforeach()
111   else()
112     set(HAVE_TERMINFO 0)
113   endif()
114 endif()
115
116 # function checks
117 check_symbol_exists(arc4random "stdlib.h" HAVE_ARC4RANDOM)
118 check_symbol_exists(backtrace "execinfo.h" HAVE_BACKTRACE)
119 check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
120 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
121 check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
122 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
123 check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH)
124 check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H)
125 check_symbol_exists(finite ieeefp.h HAVE_FINITE_IN_IEEEFP_H)
126 check_symbol_exists(isnan cmath HAVE_ISNAN_IN_CMATH)
127 check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
128 check_symbol_exists(ceilf math.h HAVE_CEILF)
129 check_symbol_exists(floorf math.h HAVE_FLOORF)
130 check_symbol_exists(fmodf math.h HAVE_FMODF)
131 check_symbol_exists(log math.h HAVE_LOG)
132 check_symbol_exists(log2 math.h HAVE_LOG2)
133 check_symbol_exists(log10 math.h HAVE_LOG10)
134 check_symbol_exists(exp math.h HAVE_EXP)
135 check_symbol_exists(exp2 math.h HAVE_EXP2)
136 check_symbol_exists(exp10 math.h HAVE_EXP10)
137 check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
138 check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
139 if( HAVE_SETJMP_H )
140   check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
141   check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)
142   check_symbol_exists(siglongjmp setjmp.h HAVE_SIGLONGJMP)
143   check_symbol_exists(sigsetjmp setjmp.h HAVE_SIGSETJMP)
144 endif()
145 if( HAVE_SYS_UIO_H )
146   check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
147 endif()
148 check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF)
149 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
150 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
151                     HAVE_MALLOC_ZONE_STATISTICS)
152 check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP)
153 check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP)
154 check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP)
155 check_symbol_exists(closedir "sys/types.h;dirent.h" HAVE_CLOSEDIR)
156 check_symbol_exists(opendir "sys/types.h;dirent.h" HAVE_OPENDIR)
157 check_symbol_exists(readdir "sys/types.h;dirent.h" HAVE_READDIR)
158 check_symbol_exists(getcwd unistd.h HAVE_GETCWD)
159 check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
160 check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
161 check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
162 check_symbol_exists(pread unistd.h HAVE_PREAD)
163 check_symbol_exists(realpath stdlib.h HAVE_REALPATH)
164 check_symbol_exists(sbrk unistd.h HAVE_SBRK)
165 check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48)
166 if( HAVE_RAND48_SRAND48 )
167   check_symbol_exists(lrand48 stdlib.h HAVE_RAND48_LRAND48)
168   if( HAVE_RAND48_LRAND48 )
169     check_symbol_exists(drand48 stdlib.h HAVE_RAND48_DRAND48)
170     if( HAVE_RAND48_DRAND48 )
171       set(HAVE_RAND48 1 CACHE INTERNAL "are srand48/lrand48/drand48 available?")
172     endif()
173   endif()
174 endif()
175 check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
176 check_symbol_exists(strtoq stdlib.h HAVE_STRTOQ)
177 check_symbol_exists(strerror string.h HAVE_STRERROR)
178 check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
179 check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
180 check_symbol_exists(setenv stdlib.h HAVE_SETENV)
181 if( PURE_WINDOWS )
182   check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)
183
184   check_function_exists(_alloca HAVE__ALLOCA)
185   check_function_exists(__alloca HAVE___ALLOCA)
186   check_function_exists(__chkstk HAVE___CHKSTK)
187   check_function_exists(___chkstk HAVE____CHKSTK)
188
189   check_function_exists(__ashldi3 HAVE___ASHLDI3)
190   check_function_exists(__ashrdi3 HAVE___ASHRDI3)
191   check_function_exists(__divdi3 HAVE___DIVDI3)
192   check_function_exists(__fixdfdi HAVE___FIXDFDI)
193   check_function_exists(__fixsfdi HAVE___FIXSFDI)
194   check_function_exists(__floatdidf HAVE___FLOATDIDF)
195   check_function_exists(__lshrdi3 HAVE___LSHRDI3)
196   check_function_exists(__moddi3 HAVE___MODDI3)
197   check_function_exists(__udivdi3 HAVE___UDIVDI3)
198   check_function_exists(__umoddi3 HAVE___UMODDI3)
199
200   check_function_exists(__main HAVE___MAIN)
201   check_function_exists(__cmpdi2 HAVE___CMPDI2)
202 endif()
203 if( HAVE_DLFCN_H )
204   if( HAVE_LIBDL )
205     list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
206   endif()
207   check_symbol_exists(dlerror dlfcn.h HAVE_DLERROR)
208   check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN)
209   if( HAVE_LIBDL )
210     list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl)
211   endif()
212 endif()
213
214 check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
215 if( LLVM_USING_GLIBC )
216   add_llvm_definitions( -D_GNU_SOURCE )
217 endif()
218
219 set(headers "sys/types.h")
220
221 if (HAVE_INTTYPES_H)
222   set(headers ${headers} "inttypes.h")
223 endif()
224
225 if (HAVE_STDINT_H)
226   set(headers ${headers} "stdint.h")
227 endif()
228
229 check_type_exists(int64_t "${headers}" HAVE_INT64_T)
230 check_type_exists(uint64_t "${headers}" HAVE_UINT64_T)
231 check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T)
232
233 # available programs checks
234 function(llvm_find_program name)
235   string(TOUPPER ${name} NAME)
236   string(REGEX REPLACE "\\." "_" NAME ${NAME})
237
238   find_program(LLVM_PATH_${NAME} NAMES ${ARGV})
239   mark_as_advanced(LLVM_PATH_${NAME})
240   if(LLVM_PATH_${NAME})
241     set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?")
242     mark_as_advanced(HAVE_${NAME})
243   else(LLVM_PATH_${NAME})
244     set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
245   endif(LLVM_PATH_${NAME})
246 endfunction()
247
248 llvm_find_program(gv)
249 llvm_find_program(circo)
250 llvm_find_program(twopi)
251 llvm_find_program(neato)
252 llvm_find_program(fdp)
253 llvm_find_program(dot)
254 llvm_find_program(dotty)
255 llvm_find_program(xdot xdot.py)
256 llvm_find_program(Graphviz)
257
258 if( LLVM_ENABLE_FFI )
259   find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
260   if( FFI_INCLUDE_PATH )
261     set(FFI_HEADER ffi.h CACHE INTERNAL "")
262     set(HAVE_FFI_H 1 CACHE INTERNAL "")
263   else()
264     find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
265     if( FFI_INCLUDE_PATH )
266       set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
267       set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
268     endif()
269   endif()
270
271   if( NOT FFI_HEADER )
272     message(FATAL_ERROR "libffi includes are not found.")
273   endif()
274
275   find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
276   if( NOT FFI_LIBRARY_PATH )
277     message(FATAL_ERROR "libffi is not found.")
278   endif()
279
280   list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
281   list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
282   check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
283   list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
284   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
285 else()
286   unset(HAVE_FFI_FFI_H CACHE)
287   unset(HAVE_FFI_H CACHE)
288   unset(HAVE_FFI_CALL CACHE)
289 endif( LLVM_ENABLE_FFI )
290
291 # Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported.
292 include(CheckAtomic)
293
294 if( LLVM_ENABLE_PIC )
295   set(ENABLE_PIC 1)
296 else()
297   set(ENABLE_PIC 0)
298 endif()
299
300 find_package(LibXml2)
301 if (LIBXML2_FOUND)
302   set(CLANG_HAVE_LIBXML 1)
303   # When cross-compiling, liblzma is not detected as a dependency for libxml2,
304   # which makes linking c-index-test fail. But for native builds, all libraries
305   # are installed and checked by CMake before Makefiles are generated and everything
306   # works according to the plan. However, if a -llzma is added to native builds,
307   # an additional requirement on the static liblzma.a is required, but will not
308   # be checked by CMake, breaking native compilation.
309   # Since this is only pertinent to cross-compilations, and there's no way CMake
310   # can check for every foreign library on every OS, we add the dep and warn the dev.
311   if ( CMAKE_CROSSCOMPILING )
312     if (NOT PC_LIBXML_VERSION VERSION_LESS "2.8.0")
313       message(STATUS "Adding LZMA as a dep to XML2 for cross-compilation, make sure liblzma.a is available.")
314       set(LIBXML2_LIBRARIES ${LIBXML2_LIBRARIES} "-llzma")
315     endif ()
316   endif ()
317 endif ()
318
319 include(CheckCXXCompilerFlag)
320
321 check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)
322
323 set(USE_NO_MAYBE_UNINITIALIZED 0)
324 set(USE_NO_UNINITIALIZED 0)
325
326 # Disable gcc's potentially uninitialized use analysis as it presents lots of
327 # false positives.
328 if (CMAKE_COMPILER_IS_GNUCXX)
329   check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED)
330   if (HAS_MAYBE_UNINITIALIZED)
331     set(USE_NO_MAYBE_UNINITIALIZED 1)
332   else()
333     # Only recent versions of gcc make the distinction between -Wuninitialized
334     # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just
335     # turn off all uninitialized use warnings.
336     check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED)
337     set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED})
338   endif()
339 endif()
340
341 # By default, we target the host, but this can be overridden at CMake
342 # invocation time.
343 include(GetHostTriple)
344 get_host_triple(LLVM_INFERRED_HOST_TRIPLE)
345
346 set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING
347     "Host on which LLVM binaries will run")
348
349 # Determine the native architecture.
350 string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
351 if( LLVM_NATIVE_ARCH STREQUAL "host" )
352   string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE})
353 endif ()
354
355 if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
356   set(LLVM_NATIVE_ARCH X86)
357 elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
358   set(LLVM_NATIVE_ARCH X86)
359 elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
360   set(LLVM_NATIVE_ARCH X86)
361 elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
362   set(LLVM_NATIVE_ARCH X86)
363 elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
364   set(LLVM_NATIVE_ARCH Sparc)
365 elseif (LLVM_NATIVE_ARCH MATCHES "powerpc")
366   set(LLVM_NATIVE_ARCH PowerPC)
367 elseif (LLVM_NATIVE_ARCH MATCHES "aarch64")
368   set(LLVM_NATIVE_ARCH AArch64)
369 elseif (LLVM_NATIVE_ARCH MATCHES "arm")
370   set(LLVM_NATIVE_ARCH ARM)
371 elseif (LLVM_NATIVE_ARCH MATCHES "mips")
372   set(LLVM_NATIVE_ARCH Mips)
373 elseif (LLVM_NATIVE_ARCH MATCHES "xcore")
374   set(LLVM_NATIVE_ARCH XCore)
375 elseif (LLVM_NATIVE_ARCH MATCHES "msp430")
376   set(LLVM_NATIVE_ARCH MSP430)
377 elseif (LLVM_NATIVE_ARCH MATCHES "hexagon")
378   set(LLVM_NATIVE_ARCH Hexagon)
379 elseif (LLVM_NATIVE_ARCH MATCHES "s390x")
380   set(LLVM_NATIVE_ARCH SystemZ)
381 else ()
382   message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}")
383 endif ()
384
385 # If build targets includes "host", then replace with native architecture.
386 list(FIND LLVM_TARGETS_TO_BUILD "host" idx)
387 if( NOT idx LESS 0 )
388   list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx})
389   list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH})
390   list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)
391 endif()
392
393 list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX)
394 if (NATIVE_ARCH_IDX EQUAL -1)
395   message(STATUS
396     "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code")
397 else ()
398   message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}")
399   set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target)
400   set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo)
401   set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC)
402   set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)
403
404   # We don't have an ASM parser for all architectures yet.
405   if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
406     set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
407   endif ()
408
409   # We don't have an disassembler for all architectures yet.
410   if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
411     set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
412   endif ()
413 endif ()
414
415 if( MINGW )
416   set(HAVE_LIBIMAGEHLP 1)
417   set(HAVE_LIBPSAPI 1)
418   set(HAVE_LIBSHELL32 1)
419   # TODO: Check existence of libraries.
420   #   include(CheckLibraryExists)
421   #   CHECK_LIBRARY_EXISTS(imagehlp ??? . HAVE_LIBIMAGEHLP)
422 endif( MINGW )
423
424 if (NOT HAVE_STRTOLL)
425   # Use _strtoi64 if strtoll is not available.
426   check_symbol_exists(_strtoi64 stdlib.h have_strtoi64)
427   if (have_strtoi64)
428     set(HAVE_STRTOLL 1)
429     set(strtoll "_strtoi64")
430     set(strtoull "_strtoui64")
431   endif ()
432 endif ()
433
434 if( MSVC )
435   set(SHLIBEXT ".lib")
436   set(stricmp "_stricmp")
437   set(strdup "_strdup")
438 endif( MSVC )
439
440 if( PURE_WINDOWS )
441   CHECK_CXX_SOURCE_COMPILES("
442     #include <windows.h>
443     #include <imagehlp.h>
444     extern \"C\" void foo(PENUMLOADED_MODULES_CALLBACK);
445     extern \"C\" void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID));
446     int main(){return 0;}"
447     HAVE_ELMCB_PCSTR)
448   if( HAVE_ELMCB_PCSTR )
449     set(WIN32_ELMCB_PCSTR "PCSTR")
450   else()
451     set(WIN32_ELMCB_PCSTR "PSTR")
452   endif()
453 endif( PURE_WINDOWS )
454
455 # FIXME: Signal handler return type, currently hardcoded to 'void'
456 set(RETSIGTYPE void)
457
458 if( LLVM_ENABLE_THREADS )
459   # Check if threading primitives aren't supported on this platform
460   if( NOT HAVE_PTHREAD_H AND NOT WIN32 )
461     set(LLVM_ENABLE_THREADS 0)
462   endif()
463 endif()
464
465 if( LLVM_ENABLE_THREADS )
466   message(STATUS "Threads enabled.")
467 else( LLVM_ENABLE_THREADS )
468   message(STATUS "Threads disabled.")
469 endif()
470
471 if (LLVM_ENABLE_ZLIB )
472   # Check if zlib is available in the system.
473   if ( NOT HAVE_ZLIB_H OR NOT HAVE_LIBZ )
474     set(LLVM_ENABLE_ZLIB 0)
475   endif()
476 endif()
477
478 set(LLVM_PREFIX ${CMAKE_INSTALL_PREFIX})
479
480 if (LLVM_ENABLE_DOXYGEN)
481   message(STATUS "Doxygen enabled.")
482   find_package(Doxygen)
483
484   if (DOXYGEN_FOUND)
485     # If we find doxygen and we want to enable doxygen by default create a
486     # global aggregate doxygen target for generating llvm and any/all
487     # subprojects doxygen documentation.
488     if (LLVM_BUILD_DOCS)
489       add_custom_target(doxygen ALL)
490     endif()
491
492     option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF)
493     if (LLVM_DOXYGEN_EXTERNAL_SEARCH)
494       set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external searhc.")
495       set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
496     endif()
497   endif()
498 else()
499   message(STATUS "Doxygen disabled.")
500 endif()