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/$llvm_cv_platform_type)
129 dnl If we are targetting a Sparc machine running Solaris, pretend that it is
130 dnl V9, since that is all that we support at the moment, and autoconf will only
131 dnl tell us we're a sparc.
133 sparc*-*-solaris*) AC_SUBST(target,[[sparcv9-sun-solaris2.8]])
137 dnl Determine what our target architecture is and configure accordingly.
138 dnl This will allow Makefiles to make a distinction between the hardware and
140 AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
142 i*86-*) llvm_cv_target_arch="x86" ;;
143 sparc*-*) llvm_cv_target_arch="Sparc" ;;
144 powerpc*-*) llvm_cv_target_arch="PowerPC" ;;
145 *) llvm_cv_target_arch="Unknown" ;;
148 if test "$llvm_cv_target_arch" = "Unknown" ; then
149 AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
152 dnl Define a substitution, ARCH, for the target architecture
153 AC_SUBST(ARCH,$llvm_cv_target_arch)
155 dnl Check for the endianness of the target
156 AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
158 dnl===-----------------------------------------------------------------------===
160 dnl=== SECTION 3: Command line arguments for the configure script.
162 dnl===-----------------------------------------------------------------------===
164 dnl --enable-optimized : check whether they want to do an optimized build:
165 AC_ARG_ENABLE(optimized,
166 AS_HELP_STRING([--enable-optimized,Compile with optimizations enabled (default is NO)]),,enableval=no)
167 if test ${enableval} = "no" ; then
168 AC_SUBST(ENABLE_OPTIMIZED,[[]])
170 AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
173 dnl --enable-jit: check whether they want to enable the jit
175 AS_HELP_STRING(--enable-jit,
176 [Enable Just In Time Compiling (default is YES)]),,
178 if test ${enableval} = "no"
182 case "$llvm_cv_target_arch" in
183 x86) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
184 Sparc) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
185 PowerPC) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
186 *) AC_SUBST(JIT,[[]]) ;;
190 dnl Allow enablement of doxygen generated documentation
191 AC_ARG_ENABLE(doxygen,
192 AS_HELP_STRING([--enable-doxygen],
193 [Build doxygen documentation (default is NO)]),,
196 yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
197 no) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
198 default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
199 *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
202 dnl===-----------------------------------------------------------------------===
204 dnl=== SECTION 4: Check for programs we need and that they are the right version
206 dnl===-----------------------------------------------------------------------===
208 dnl Check for compilation tools
215 dnl Check for the tools that the makefiles require
218 AC_PATH_PROG(CMP, [cmp], [cmp])
219 AC_PATH_PROG(CP, [cp], [cp])
220 AC_PATH_PROG(DATE, [date], [date])
221 AC_PATH_PROG(FIND, [find], [find])
222 AC_PATH_PROG(GREP, [grep], [grep])
223 AC_PATH_PROG(LLVMGCC, [llvm-gcc], [llvm-gcc])
224 AC_PATH_PROG(LLVMGXX, [llvm-g++], [llvm-g++])
225 AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
226 AC_PATH_PROG(MV, [mv], [mv])
227 AC_PATH_PROG(PAX, [pax], [pax])
229 AC_PATH_PROG(RM, [rm], [rm])
230 AC_PATH_PROG(SED, [sed], [sed])
231 AC_PATH_PROG(TAR, [tar], [gtar])
233 dnl Find the install program
236 dnl Checks for documentation and testing tools that we can do without. If these
237 dnl are not found then they are set to "true" which always succeeds but does
238 dnl nothing. This just lets the build output show that we could have done
239 dnl something if the tool was available.
240 AC_PATH_PROG(BZIP2,[bzip2],[true bzip2])
241 AC_PATH_PROG(DOT,[dot],[true dot])
242 AC_PATH_PROG(DOXYGEN,[doxygen],[true doxygen])
243 AC_PATH_PROG(ETAGS,[etags],[true etags])
244 AC_PATH_PROG(GROFF,[groff],[true groff])
245 AC_PATH_PROG(GZIP,[gzip],[true gzip])
246 AC_PATH_PROG(POD2HTML,[pod2html],[true pod2html])
247 AC_PATH_PROG(POD2MAN,[pod2man],[true pod2man])
248 AC_PATH_PROG(RUNTEST,[runtest],[true runtest])
250 AC_PATH_PROG(ZIP,[zip],[true zip])
252 dnl Determine if the linker supports the -R option.
255 dnl Check for libtool and the library that has dlopen function (which must come
256 dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
262 dnl Check if we know how to tell etags we are using C++:
263 etags_version=`$ETAGS --version 2>&1`
264 case "$etags_version" in
265 *[Ee]xuberant*) ETAGSFLAGS="--language-force=c++" ;;
266 *GNU\ Emacs*) ETAGSFLAGS="-l c++" ;;
269 AC_SUBST(ETAGSFLAGS,$ETAGSFLAGS)
271 AC_MSG_CHECKING([tool compatibility])
273 dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
274 dnl ICC; we use GCC specific options in the makefiles so the compiler needs
275 dnl to support those options.
276 dnl "icc" emits gcc signatures
277 dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
289 if test "$GCC" != "yes" && test "$ICC" != "yes"
291 AC_MSG_ERROR([gcc|icc required but not found])
294 dnl Ensure that compilation tools are GCC; we use GCC specific extensions
295 if test "$GXX" != "yes" && test "$IXX" != "yes"
297 AC_MSG_ERROR([g++|icc required but not found])
300 dnl Verify that GCC is version 3.0 or higher
301 if test "$GCC" = "yes"
303 gccmajor=`$CC --version | head -n 1 | awk '{print $NF;}' | cut -d. -f1`
304 if test "$gccmajor" -lt "3"
306 AC_MSG_ERROR([gcc 3.x required, but you have a lower version])
310 dnl Check for GNU Make. We use its extensions, so don't build without it
311 if test -z "$llvm_cv_gnu_make_command"
313 AC_MSG_ERROR([GNU Make required but not found])
316 dnl Tool compatibility is okay if we make it here.
319 dnl===-----------------------------------------------------------------------===
321 dnl=== SECTION 5: Check for libraries
323 dnl===-----------------------------------------------------------------------===
325 dnl libelf is for sparc only; we can ignore it if we don't have it
326 AC_CHECK_LIB(elf, elf_begin)
328 dnl lt_dlopen may be required for plugin support.
329 AC_SEARCH_LIBS(lt_dlopen,ltdl,AC_DEFINE([HAVE_LT_DLOPEN],[1],
330 [Define if lt_dlopen() is available on this platform]),
331 AC_MSG_WARN([lt_dlopen() not found - plugin support might
334 dnl dlopen() is required for plugin support.
335 AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
336 [Define if dlopen() is available on this platform.]),
337 AC_MSG_WARN([dlopen() not found - disabling plugin support]))
339 dnl mallinfo is optional; the code can compile (minus features) without it
340 AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
341 [Define if mallinfo() is available on this platform.]))
343 dnl pthread locking functions are optional - but llvm will not be thread-safe
345 AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
346 AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
347 [Have pthread_mutex_lock]))
349 dnl===-----------------------------------------------------------------------===
351 dnl=== SECTION 6: Check for header files
353 dnl===-----------------------------------------------------------------------===
355 dnl We don't check for ancient stuff or things that are guaranteed to be there
356 dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
359 dnl However, we do need some system specific header files. Generally we're
360 dnl looking for POSIX headers.
362 AC_CHECK_HEADERS([sys/time.h sys/mman.h sys/resource.h sys/time.h sys/types.h])
363 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h limits.h link.h])
364 AC_CHECK_HEADERS([malloc.h unistd.h windows.h])
366 AC_HEADER_MMAP_ANONYMOUS
368 dnl Check for things that need to be included in public headers, and so
369 dnl for which we may not have access to a HAVE_* preprocessor #define.
370 dnl (primarily used in DataTypes.h)
371 AC_CHECK_HEADERS([inttypes.h stdint.h])
373 dnl===-----------------------------------------------------------------------===
375 dnl=== SECTION 7: Check for types and structures
377 dnl===-----------------------------------------------------------------------===
383 AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
384 AC_CHECK_TYPES([uint64_t],,
385 AC_CHECK_TYPES([u_int64_t],,
386 AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
388 dnl===-----------------------------------------------------------------------===
390 dnl=== SECTION 8: Check for specific functions needed
392 dnl===-----------------------------------------------------------------------===
394 AC_CHECK_FUNCS([backtrace getcwd getpagesize getrusage gettimeofday isatty ])
395 AC_CHECK_FUNCS([mkdtemp mkstemp mktemp ])
396 AC_CHECK_FUNCS([realpath strdup strtoq strtoll sysconf ])
401 dnl Check for variations in the Standard C++ library and STL. These macros are
402 dnl provided by LLVM in the autoconf/m4 directory.
405 AC_CXX_HAVE_STD_ITERATOR
406 AC_CXX_HAVE_BI_ITERATOR
407 AC_CXX_HAVE_FWD_ITERATOR
411 dnl Check for mmap and mprotect support. We need both to do the JIT and for
412 dnl bytecode loading, etc.
415 AC_CHECK_FUNC(mprotect,,
416 AC_MSG_ERROR([Function mprotect() required but not found]))
418 if test "$ac_cv_func_mmap_fixed_mapped" = "no"
420 AC_MSG_WARN([mmap() required but not found])
422 if test "$ac_cv_func_mmap_file" = "no"
424 AC_MSG_WARN([mmap() of files required but not found])
427 dnl===-----------------------------------------------------------------------===
429 dnl=== SECTION 9: Additional checks, variables, etc.
431 dnl===-----------------------------------------------------------------------===
433 dnl See if the llvmgcc executable can compile to LLVM assembly
434 AC_CACHE_CHECK([whether llvm-gcc is sane],[llvm_cv_llvmgcc_sanity],
435 [llvm_cv_llvmgcc_sanity="no"
436 if test -x "$LLVMGCC" ; then
437 cp /dev/null conftest.c
438 "$LLVMGCC" -S -o - conftest.c | grep implementation > /dev/null 2>&1
439 if test $? -eq 0 ; then
440 llvm_cv_llvmgcc_sanity="yes"
445 dnl Since we have a sane llvmgcc, identify it and its sub-tools
446 if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then
447 llvmcc1path=`"$LLVMGCC" --print-prog-name=cc1`
448 AC_SUBST(LLVMCC1,$llvmcc1path)
449 llvmcc1pluspath=`"$LLVMGCC" --print-prog-name=cc1plus`
450 AC_SUBST(LLVMCC1PLUS,$llvmcc1pluspath)
451 llvmgccdir=`echo "$llvmcc1path" | sed 's,/libexec/.*,,'`
452 AC_SUBST(LLVMGCCDIR,$llvmgccdir)
455 dnl Propagate the shared library extension that the libltdl checks did to
456 dnl the Makefiles so we can use it there too
457 AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
459 # Translate the various configuration directories and other basic
460 # information into substitutions that will end up in Makefile.config.in
461 # that these configured values can be used by the makefiles
462 eval LLVM_PREFIX="${prefix}";
463 eval LLVM_BINDIR="${prefix}/bin";
464 eval LLVM_LIBDIR="${prefix}/lib";
465 eval LLVM_DATADIR="${prefix}/share/llvm";
466 eval LLVM_DOCSDIR="${prefix}/docs/llvm";
467 eval LLVM_ETCDIR="${prefix}/etc/llvm";
468 eval LLVM_INCLUDEDIR="${prefix}/include";
469 eval LLVM_INFODIR="${prefix}/info";
470 eval LLVM_MANDIR="${prefix}/man";
471 LLVM_CONFIGTIME=`date`
472 AC_SUBST(LLVM_PREFIX)
473 AC_SUBST(LLVM_BINDIR)
474 AC_SUBST(LLVM_LIBDIR)
475 AC_SUBST(LLVM_DATADIR)
476 AC_SUBST(LLVM_DOCSDIR)
477 AC_SUBST(LLVM_ETCDIR)
478 AC_SUBST(LLVM_INCLUDEDIR)
479 AC_SUBST(LLVM_INFODIR)
480 AC_SUBST(LLVM_MANDIR)
481 AC_SUBST(LLVM_CONFIGTIME)
483 # Place the various directores into the config.h file as #defines so that we
484 # can know about the installation paths within LLVM.
485 AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
486 [Installation prefix directory])
487 AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
488 [Installation directory for binary executables])
489 AC_DEFINE_UNQUOTED(LLVM_LIBDIR, "$LLVM_LIBDIR",
490 [Installation directory for libraries])
491 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
492 [Installation directory for data files])
493 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DOCSDIR",
494 [Installation directory for documentation])
495 AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
496 [Installation directory for config files])
497 AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
498 [Installation directory for include files])
499 AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
500 [Installation directory for .info files])
501 AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
502 [Installation directory for man pages])
503 AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
504 [Time at which LLVM was configured])
506 dnl===-----------------------------------------------------------------------===
508 dnl=== SECTION 10: Specify the output files and generate it
510 dnl===-----------------------------------------------------------------------===
512 dnl Configure header files
513 AC_CONFIG_HEADERS(include/llvm/Config/config.h)
515 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
516 AC_CONFIG_HEADERS([include/llvm/ADT/hash_map])
517 AC_CONFIG_HEADERS([include/llvm/ADT/hash_set])
518 AC_CONFIG_HEADERS([include/llvm/Support/ThreadSupport.h])
519 AC_CONFIG_HEADERS([include/llvm/ADT/iterator])
521 dnl Configure the makefile's configuration data
522 AC_CONFIG_FILES([Makefile.config])
524 dnl Configure llvmc's configuration files
525 AC_CONFIG_FILES([tools/llvmc/st tools/llvmc/cpp tools/llvmc/ll tools/llvmc/c])
527 dnl Configure doxygen's configuration file
528 AC_CONFIG_FILES([docs/doxygen.cfg])
530 dnl Do special configuration of Makefiles
531 AC_CONFIG_MAKEFILE(Makefile)
532 AC_CONFIG_MAKEFILE(Makefile.common)
533 AC_CONFIG_MAKEFILE(examples/Makefile)
534 AC_CONFIG_MAKEFILE(lib/Makefile)
535 AC_CONFIG_MAKEFILE(runtime/Makefile)
536 AC_CONFIG_MAKEFILE(test/Makefile)
537 AC_CONFIG_MAKEFILE(test/Makefile.tests)
538 AC_CONFIG_MAKEFILE(tools/Makefile)
539 AC_CONFIG_MAKEFILE(utils/Makefile)
540 AC_CONFIG_MAKEFILE(projects/Makefile)
542 dnl Finally, crank out the output
545 dnl Warn loudly if llvm-gcc was not obviously working
546 if test "$llvm_cv_llvmgcc_sanity" = "no" ; then
547 AC_MSG_WARN([***** llvmgcc/llvmg++ was not found, or does not appear to be ])
548 AC_MSG_WARN([***** working. Please make sure you have llvmgcc and llvmg++ in])
549 AC_MSG_WARN([***** your path before configuring LLVM. The runtime libraries])
550 AC_MSG_WARN([***** (llvm/runtime) will not be built but you should be able to])
551 AC_MSG_WARN([***** build the llvm tools.])