1 dnl === configure.ac --------------------------------------------------------===
2 dnl The LLVM Compiler Infrastructure
4 dnl This file was developed by the LLVM research group and is distributed under
5 dnl the University of Illinois Open Source License. See LICENSE.TXT for details.
7 dnl===-----------------------------------------------------------------------===
8 dnl This is the LLVM configuration script. It is processed by the autoconf
9 dnl program to produce a script named configure. This script contains the
10 dnl configuration checks that LLVM needs in order to support multiple platforms.
11 dnl This file is composed of 10 sections per the recommended organization of
12 dnl autoconf input defined in the autoconf documentation. As this file evolves,
13 dnl please keep the various types of checks within their sections. The sections
16 dnl SECTION 1: Initialization & Setup
17 dnl SECTION 2: Architecture, target, and host checks
18 dnl SECTION 3: Command line arguments for the configure script.
19 dnl SECTION 4: Check for programs we need and that they are the right version
20 dnl SECTION 5: Check for libraries
21 dnl SECTION 6: Check for header files
22 dnl SECTION 7: Check for types and structures
23 dnl SECTION 8: Check for specific functions needed
24 dnl SECTION 9: Additional checks, variables, etc.
25 dnl SECTION 10: Specify the output files and generate it
27 dnl===-----------------------------------------------------------------------===
29 dnl=== SECTION 1: Initialization & Setup
31 dnl===-----------------------------------------------------------------------===
32 dnl Initialize autoconf and define the package name, version number and
33 dnl email address for reporting bugs.
34 AC_INIT([[llvm]],[[1.4]],[llvmbugs@cs.uiuc.edu])
36 dnl Provide a copyright substitution and ensure the copyright notice is included
37 dnl in the output of --version option of the generated configure script.
38 AC_SUBST(LLVM_COPYRIGHT,["Copyright (c) 2003-2005 U University of Illinois at Urbana-Champaign."])
39 AC_COPYRIGHT($LLVM_COPYRIGHT)
41 dnl Indicate that we require autoconf 2.59 or later. Ths is needed because we
42 dnl use some autoconf macros only available in 2.59.
45 dnl Verify that the source directory is valid. This makes sure that we are
46 dnl configuring LLVM and not some other package (it validates --srcdir argument)
47 AC_CONFIG_SRCDIR([lib/VMCore/Module.cpp])
49 dnl Place all of the extra autoconf files into the config subdirectory. Tell
50 dnl various tools where the m4 autoconf macros are.
51 AC_CONFIG_AUX_DIR([autoconf])
53 dnl Quit if the source directory has already been configured.
54 dnl NOTE: This relies upon undocumented autoconf behavior.
55 if test ${srcdir} != "." ; then
56 if test -f ${srcdir}/include/llvm/Config/config.h ; then
57 AC_MSG_ERROR([Already configured in ${srcdir}])
61 dnl Configure all of the projects present in our source tree. While we could
62 dnl just AC_CONFIG_SUBDIRS on the set of directories in projects that have a
63 dnl configure script, that usage of the AC_CONFIG_SUBDIRS macro is deprecated.
64 dnl Instead we match on the known projects.
65 for i in `ls ${srcdir}/projects`
67 if test -d ${srcdir}/projects/${i} ; then
70 "sample") AC_CONFIG_SUBDIRS([projects/sample]) ;;
71 "Stacker") AC_CONFIG_SUBDIRS([projects/Stacker]) ;;
72 "llvm-test") AC_CONFIG_SUBDIRS([projects/llvm-test]) ;;
73 "llvm-reopt") AC_CONFIG_SUBDIRS([projects/llvm-reopt]);;
74 "llvm-gcc") AC_CONFIG_SUBDIRS([projects/llvm-gcc]) ;;
75 "Java") AC_CONFIG_SUBDIRS([projects/Java]) ;;
76 "llvm-tv") AC_CONFIG_SUBDIRS([projects/llvm-tv]) ;;
77 "llvm-fefw") AC_CONFIG_SUBDIRS([projects/llvm-fefw]) ;;
78 "poolalloc") AC_CONFIG_SUBDIRS([projects/poolalloc]) ;;
80 AC_MSG_WARN([Unknown project (${i}) won't be configured automatically])
86 dnl===-----------------------------------------------------------------------===
88 dnl=== SECTION 2: Architecture, target, and host checks
90 dnl===-----------------------------------------------------------------------===
92 dnl Check the target for which we're compiling and the host that will do the
93 dnl compilations. This will tell us which LLVM compiler will be used for
94 dnl compiling SSA into object code. This needs to be done early because
95 dnl following tests depend on it.
98 dnl Determine the platform type and cache its value. This helps us configure
99 dnl the System library to the correct build platform.
100 AC_CACHE_CHECK([support for generic build operating system],
101 [llvm_cv_platform_type],
103 *-*-aix*) llvm_cv_platform_type="AIX" ;;
104 *-*-cygwin*) llvm_cv_platform_type="Cygwin" ;;
105 *-*-darwin*) llvm_cv_platform_type="Darwin" ;;
106 *-*-freebsd*) llvm_cv_platform_type="FreeBSD" ;;
107 *-*-interix*) llvm_cv_platform_type="Interix" ;;
108 *-*-linux*) llvm_cv_platform_type="Linux" ;;
109 *-*-solaris*) llvm_cv_platform_type="SunOS" ;;
110 *-*-win32*) llvm_cv_platform_type="Win32" ;;
111 *-*-mingw*) llvm_cv_platform_type="Win32" ;;
112 *) llvm_cv_platform_type="Unknown" ;;
115 dnl Make sure we aren't attempting to configure for an unknown system
116 if test "$llvm_cv_platform_type" = "Unknown" ; then
117 AC_MSG_ERROR([Operating system platform is unknown, configure can't continue])
120 dnl Set the "OS" Makefile variable based on the platform type so the
121 dnl makefile can configure itself to specific build hosts
122 AC_SUBST(OS,$llvm_cv_platform_type)
124 dnl Make a link from lib/System/platform to lib/System/$llvm_cv_platform_type
125 dnl This helps the #inclusion of the system specific include files
126 dnl for the operating system abstraction library, lib/System.
127 AC_CONFIG_LINKS(lib/System/platform:lib/System/$llvm_cv_platform_type)
129 dnl If we are targetting a Sparc machine running Solaris, pretend that it is
130 dnl V9, since that is all that we support at the moment, and autoconf will only
131 dnl tell us we're a sparc.
133 sparc*-*-solaris*) AC_SUBST(target,[[sparcv9-sun-solaris2.8]])
137 dnl Determine what our target architecture is and configure accordingly.
138 dnl This will allow Makefiles to make a distinction between the hardware and
140 AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
142 i?86-*) llvm_cv_target_arch="x86" ;;
143 amd64-* | x86_64-*) llvm_cv_target_arch="AMD64" ;;
144 sparc*-*) llvm_cv_target_arch="Sparc" ;;
145 powerpc*-*) llvm_cv_target_arch="PowerPC" ;;
146 *) llvm_cv_target_arch="Unknown" ;;
149 if test "$llvm_cv_target_arch" = "Unknown" ; then
150 AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
153 dnl Define a substitution, ARCH, for the target architecture
154 AC_SUBST(ARCH,$llvm_cv_target_arch)
156 dnl Check for the endianness of the target
157 AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
159 dnl===-----------------------------------------------------------------------===
161 dnl=== SECTION 3: Command line arguments for the configure script.
163 dnl===-----------------------------------------------------------------------===
165 dnl --enable-optimized : check whether they want to do an optimized build:
166 AC_ARG_ENABLE(optimized,
167 AS_HELP_STRING([--enable-optimized,Compile with optimizations enabled (default is NO)]),,enableval=no)
168 if test ${enableval} = "no" ; then
169 AC_SUBST(ENABLE_OPTIMIZED,[[]])
171 AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
174 dnl --enable-jit: check whether they want to enable the jit
176 AS_HELP_STRING(--enable-jit,
177 [Enable Just In Time Compiling (default is YES)]),,
179 if test ${enableval} = "no"
183 case "$llvm_cv_target_arch" in
184 x86) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
185 Sparc) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
186 PowerPC) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
187 AMD64) AC_SUBST(JIT,[[]]) ;;
188 *) AC_SUBST(JIT,[[]]) ;;
192 dnl Allow enablement of doxygen generated documentation
193 AC_ARG_ENABLE(doxygen,
194 AS_HELP_STRING([--enable-doxygen],
195 [Build doxygen documentation (default is NO)]),,
198 yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
199 no) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
200 default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
201 *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
204 dnl===-----------------------------------------------------------------------===
206 dnl=== SECTION 4: Check for programs we need and that they are the right version
208 dnl===-----------------------------------------------------------------------===
210 dnl Check for compilation tools
217 dnl Check for the tools that the makefiles require
220 AC_PATH_PROG(CMP, [cmp], [cmp])
221 AC_PATH_PROG(CP, [cp], [cp])
222 AC_PATH_PROG(DATE, [date], [date])
223 AC_PATH_PROG(FIND, [find], [find])
224 AC_PATH_PROG(GREP, [grep], [grep])
225 AC_PATH_PROG(LLVMGCC, [llvm-gcc], [llvm-gcc])
226 AC_PATH_PROG(LLVMGXX, [llvm-g++], [llvm-g++])
227 AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
228 AC_PATH_PROG(MV, [mv], [mv])
229 AC_PATH_PROG(PAX, [pax], [pax])
231 AC_PATH_PROG(RM, [rm], [rm])
232 AC_PATH_PROG(SED, [sed], [sed])
233 AC_PATH_PROG(TAR, [tar], [gtar])
235 dnl Find the install program
238 dnl Checks for documentation and testing tools that we can do without. If these
239 dnl are not found then they are set to "true" which always succeeds but does
240 dnl nothing. This just lets the build output show that we could have done
241 dnl something if the tool was available.
242 AC_PATH_PROG(BZIP2,[bzip2],[true bzip2])
243 AC_PATH_PROG(DOT,[dot],[true dot])
244 AC_PATH_PROG(DOXYGEN,[doxygen],[true doxygen])
245 AC_PATH_PROG(ETAGS,[etags],[true etags])
246 AC_PATH_PROG(GROFF,[groff],[true groff])
247 AC_PATH_PROG(GZIP,[gzip],[true gzip])
248 AC_PATH_PROG(POD2HTML,[pod2html],[true pod2html])
249 AC_PATH_PROG(POD2MAN,[pod2man],[true pod2man])
250 AC_PATH_PROG(RUNTEST,[runtest],[true runtest])
252 AC_PATH_PROG(ZIP,[zip],[true zip])
254 dnl Determine if the linker supports the -R option.
257 dnl Check for libtool and the library that has dlopen function (which must come
258 dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
264 dnl Check if we know how to tell etags we are using C++:
265 etags_version=`$ETAGS --version 2>&1`
266 case "$etags_version" in
267 *[Ee]xuberant*) ETAGSFLAGS="--language-force=c++" ;;
268 *GNU\ Emacs*) ETAGSFLAGS="-l c++" ;;
271 AC_SUBST(ETAGSFLAGS,$ETAGSFLAGS)
273 AC_MSG_CHECKING([tool compatibility])
275 dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
276 dnl ICC; we use GCC specific options in the makefiles so the compiler needs
277 dnl to support those options.
278 dnl "icc" emits gcc signatures
279 dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
291 if test "$GCC" != "yes" && test "$ICC" != "yes"
293 AC_MSG_ERROR([gcc|icc required but not found])
296 dnl Ensure that compilation tools are GCC; we use GCC specific extensions
297 if test "$GXX" != "yes" && test "$IXX" != "yes"
299 AC_MSG_ERROR([g++|icc required but not found])
302 dnl Verify that GCC is version 3.0 or higher
303 if test "$GCC" = "yes"
305 gccmajor=`$CC --version | head -n 1 | awk '{print $NF;}' | cut -d. -f1`
306 if test "$gccmajor" -lt "3"
308 AC_MSG_ERROR([gcc 3.x required, but you have a lower version])
312 dnl Check for GNU Make. We use its extensions, so don't build without it
313 if test -z "$llvm_cv_gnu_make_command"
315 AC_MSG_ERROR([GNU Make required but not found])
318 dnl Tool compatibility is okay if we make it here.
321 dnl===-----------------------------------------------------------------------===
323 dnl=== SECTION 5: Check for libraries
325 dnl===-----------------------------------------------------------------------===
327 dnl libelf is for sparc only; we can ignore it if we don't have it
328 AC_CHECK_LIB(elf, elf_begin)
330 dnl lt_dlopen may be required for plugin support.
331 AC_SEARCH_LIBS(lt_dlopen,ltdl,AC_DEFINE([HAVE_LT_DLOPEN],[1],
332 [Define if lt_dlopen() is available on this platform]),
333 AC_MSG_WARN([lt_dlopen() not found - plugin support might
336 dnl dlopen() is required for plugin support.
337 AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
338 [Define if dlopen() is available on this platform.]),
339 AC_MSG_WARN([dlopen() not found - disabling plugin support]))
341 dnl mallinfo is optional; the code can compile (minus features) without it
342 AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
343 [Define if mallinfo() is available on this platform.]))
345 dnl pthread locking functions are optional - but llvm will not be thread-safe
347 AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
348 AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
349 [Have pthread_mutex_lock]))
351 dnl===-----------------------------------------------------------------------===
353 dnl=== SECTION 6: Check for header files
355 dnl===-----------------------------------------------------------------------===
357 dnl We don't check for ancient stuff or things that are guaranteed to be there
358 dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
361 dnl However, we do need some system specific header files. Generally we're
362 dnl looking for POSIX headers.
364 AC_CHECK_HEADERS([sys/time.h sys/mman.h sys/resource.h sys/time.h sys/types.h])
365 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h limits.h link.h])
366 AC_CHECK_HEADERS([malloc.h unistd.h windows.h])
368 AC_HEADER_MMAP_ANONYMOUS
370 dnl Check for things that need to be included in public headers, and so
371 dnl for which we may not have access to a HAVE_* preprocessor #define.
372 dnl (primarily used in DataTypes.h)
373 AC_CHECK_HEADERS([inttypes.h stdint.h])
375 dnl===-----------------------------------------------------------------------===
377 dnl=== SECTION 7: Check for types and structures
379 dnl===-----------------------------------------------------------------------===
385 AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
386 AC_CHECK_TYPES([uint64_t],,
387 AC_CHECK_TYPES([u_int64_t],,
388 AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
390 dnl===-----------------------------------------------------------------------===
392 dnl=== SECTION 8: Check for specific functions needed
394 dnl===-----------------------------------------------------------------------===
396 AC_CHECK_FUNCS([backtrace getcwd getpagesize getrusage gettimeofday isatty ])
397 AC_CHECK_FUNCS([mkdtemp mkstemp mktemp ])
398 AC_CHECK_FUNCS([realpath strdup strtoq strtoll sysconf ])
403 dnl Check for variations in the Standard C++ library and STL. These macros are
404 dnl provided by LLVM in the autoconf/m4 directory.
407 AC_CXX_HAVE_STD_ITERATOR
408 AC_CXX_HAVE_BI_ITERATOR
409 AC_CXX_HAVE_FWD_ITERATOR
413 dnl Check for mmap and mprotect support. We need both to do the JIT and for
414 dnl bytecode loading, etc.
417 AC_CHECK_FUNC(mprotect,,
418 AC_MSG_ERROR([Function mprotect() required but not found]))
420 if test "$ac_cv_func_mmap_fixed_mapped" = "no"
422 AC_MSG_WARN([mmap() required but not found])
424 if test "$ac_cv_func_mmap_file" = "no"
426 AC_MSG_WARN([mmap() of files required but not found])
429 dnl===-----------------------------------------------------------------------===
431 dnl=== SECTION 9: Additional checks, variables, etc.
433 dnl===-----------------------------------------------------------------------===
435 dnl See if the llvmgcc executable can compile to LLVM assembly
436 AC_CACHE_CHECK([whether llvm-gcc is sane],[llvm_cv_llvmgcc_sanity],
437 [llvm_cv_llvmgcc_sanity="no"
438 if test -x "$LLVMGCC" ; then
439 cp /dev/null conftest.c
440 "$LLVMGCC" -S -o - conftest.c | grep implementation > /dev/null 2>&1
441 if test $? -eq 0 ; then
442 llvm_cv_llvmgcc_sanity="yes"
447 dnl Since we have a sane llvmgcc, identify it and its sub-tools
448 if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then
449 llvmcc1path=`"$LLVMGCC" --print-prog-name=cc1`
450 AC_SUBST(LLVMCC1,$llvmcc1path)
451 llvmcc1pluspath=`"$LLVMGCC" --print-prog-name=cc1plus`
452 AC_SUBST(LLVMCC1PLUS,$llvmcc1pluspath)
453 llvmgccdir=`echo "$llvmcc1path" | sed 's,/libexec/.*,,'`
454 AC_SUBST(LLVMGCCDIR,$llvmgccdir)
457 dnl Propagate the shared library extension that the libltdl checks did to
458 dnl the Makefiles so we can use it there too
459 AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
461 # Translate the various configuration directories and other basic
462 # information into substitutions that will end up in Makefile.config.in
463 # that these configured values can be used by the makefiles
464 eval LLVM_PREFIX="${prefix}";
465 eval LLVM_BINDIR="${prefix}/bin";
466 eval LLVM_LIBDIR="${prefix}/lib";
467 eval LLVM_DATADIR="${prefix}/share/llvm";
468 eval LLVM_DOCSDIR="${prefix}/docs/llvm";
469 eval LLVM_ETCDIR="${prefix}/etc/llvm";
470 eval LLVM_INCLUDEDIR="${prefix}/include";
471 eval LLVM_INFODIR="${prefix}/info";
472 eval LLVM_MANDIR="${prefix}/man";
473 LLVM_CONFIGTIME=`date`
474 AC_SUBST(LLVM_PREFIX)
475 AC_SUBST(LLVM_BINDIR)
476 AC_SUBST(LLVM_LIBDIR)
477 AC_SUBST(LLVM_DATADIR)
478 AC_SUBST(LLVM_DOCSDIR)
479 AC_SUBST(LLVM_ETCDIR)
480 AC_SUBST(LLVM_INCLUDEDIR)
481 AC_SUBST(LLVM_INFODIR)
482 AC_SUBST(LLVM_MANDIR)
483 AC_SUBST(LLVM_CONFIGTIME)
485 # Place the various directores into the config.h file as #defines so that we
486 # can know about the installation paths within LLVM.
487 AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
488 [Installation prefix directory])
489 AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
490 [Installation directory for binary executables])
491 AC_DEFINE_UNQUOTED(LLVM_LIBDIR, "$LLVM_LIBDIR",
492 [Installation directory for libraries])
493 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
494 [Installation directory for data files])
495 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DOCSDIR",
496 [Installation directory for documentation])
497 AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
498 [Installation directory for config files])
499 AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
500 [Installation directory for include files])
501 AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
502 [Installation directory for .info files])
503 AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
504 [Installation directory for man pages])
505 AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
506 [Time at which LLVM was configured])
508 dnl===-----------------------------------------------------------------------===
510 dnl=== SECTION 10: Specify the output files and generate it
512 dnl===-----------------------------------------------------------------------===
514 dnl Configure header files
515 AC_CONFIG_HEADERS(include/llvm/Config/config.h)
517 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
518 AC_CONFIG_HEADERS([include/llvm/ADT/hash_map])
519 AC_CONFIG_HEADERS([include/llvm/ADT/hash_set])
520 AC_CONFIG_HEADERS([include/llvm/Support/ThreadSupport.h])
521 AC_CONFIG_HEADERS([include/llvm/ADT/iterator])
523 dnl Configure the makefile's configuration data
524 AC_CONFIG_FILES([Makefile.config])
526 dnl Configure llvmc's configuration files
527 AC_CONFIG_FILES([tools/llvmc/st tools/llvmc/cpp tools/llvmc/ll tools/llvmc/c])
529 dnl Configure doxygen's configuration file
530 AC_CONFIG_FILES([docs/doxygen.cfg])
532 dnl Do special configuration of Makefiles
533 AC_CONFIG_MAKEFILE(Makefile)
534 AC_CONFIG_MAKEFILE(Makefile.common)
535 AC_CONFIG_MAKEFILE(examples/Makefile)
536 AC_CONFIG_MAKEFILE(lib/Makefile)
537 AC_CONFIG_MAKEFILE(runtime/Makefile)
538 AC_CONFIG_MAKEFILE(test/Makefile)
539 AC_CONFIG_MAKEFILE(test/Makefile.tests)
540 AC_CONFIG_MAKEFILE(tools/Makefile)
541 AC_CONFIG_MAKEFILE(utils/Makefile)
542 AC_CONFIG_MAKEFILE(projects/Makefile)
544 dnl Finally, crank out the output
547 dnl Warn loudly if llvm-gcc was not obviously working
548 if test "$llvm_cv_llvmgcc_sanity" = "no" ; then
549 AC_MSG_WARN([***** llvmgcc/llvmg++ was not found, or does not appear to be ])
550 AC_MSG_WARN([***** working. Please make sure you have llvmgcc and llvmg++ in])
551 AC_MSG_WARN([***** your path before configuring LLVM. The runtime libraries])
552 AC_MSG_WARN([***** (llvm/runtime) will not be built but you should be able to])
553 AC_MSG_WARN([***** build the llvm tools.])