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 (${i}) won't be configured automatically])
86 dnl===-----------------------------------------------------------------------===
88 dnl=== SECTION 2: Architecture, target, and host checks
90 dnl===-----------------------------------------------------------------------===
92 dnl Check the target for which we're compiling and the host that will do the
93 dnl compilations. This will tell us which LLVM compiler will be used for
94 dnl compiling SSA into object code. This needs to be done early because
95 dnl following tests depend on it.
98 dnl Determine the platform type and cache its value. This helps us configure
99 dnl the System library to the correct build platform.
100 AC_CACHE_CHECK([type of operating system we're on],
104 llvm_cv_os_type="AIX"
105 llvm_cv_platform_type="Unix" ;;
107 llvm_cv_os_type="Cygwin"
108 llvm_cv_platform_type="Unix" ;;
110 llvm_cv_os_type="Darwin"
111 llvm_cv_platform_type="Unix" ;;
113 llvm_cv_os_type="FreeBSD"
114 llvm_cv_platform_type="Unix" ;;
116 llvm_cv_os_type="Interix"
117 llvm_cv_platform_type="Unix" ;;
119 llvm_cv_os_type="Linux"
120 llvm_cv_platform_type="Unix" ;;
122 llvm_cv_os_type="SunOS"
123 llvm_cv_platform_type="Unix" ;;
125 llvm_cv_os_type="Win32"
126 llvm_cv_platform_type="Win32" ;;
128 llvm_cv_os_type="MingW"
129 llvm_cv_platform_type="Win32" ;;
131 llvm_cv_os_type="Unknown"
132 llvm_cv_platform_type="Unknown" ;;
135 dnl Make sure we aren't attempting to configure for an unknown system
136 if test "$llvm_cv_os_type" = "Unknown" ; then
137 AC_MSG_ERROR([Operating system is unknown, configure can't continue])
140 dnl Set the "OS" Makefile variable based on the platform type so the
141 dnl makefile can configure itself to specific build hosts
142 AC_SUBST(OS,$llvm_cv_os_type)
144 dnl Set the "LLVM_ON_*" variables based on llvm_cvs_platform_type
145 dnl This is used by lib/System to determine the basic kind of implementation
147 case $llvm_cv_platform_type in
149 AC_DEFINE([LLVM_ON_UNIX],[1],[Define if this is Unixish platform])
152 AC_DEFINE([LLVM_ON_WIN32],[1],[Define if this is Win32ish platform])
156 dnl Make a link from lib/System/platform to lib/System/$llvm_cv_os_type
157 dnl This helps the #inclusion of the system specific include files
158 dnl for the operating system abstraction library, lib/System.
159 AC_CONFIG_LINKS(lib/System/platform:lib/System/$llvm_cv_os_type)
161 dnl If we are targetting a Sparc machine running Solaris, pretend that it is
162 dnl V9, since that is all that we support at the moment, and autoconf will only
163 dnl tell us we're a sparc.
165 sparc*-*-solaris*) AC_SUBST(target,[[sparcv9-sun-solaris2.8]])
169 dnl Determine what our target architecture is and configure accordingly.
170 dnl This will allow Makefiles to make a distinction between the hardware and
172 AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
174 i?86-*) llvm_cv_target_arch="x86" ;;
175 amd64-* | x86_64-*) llvm_cv_target_arch="AMD64" ;;
176 sparc*-*) llvm_cv_target_arch="Sparc" ;;
177 powerpc*-*) llvm_cv_target_arch="PowerPC" ;;
178 *) llvm_cv_target_arch="Unknown" ;;
181 if test "$llvm_cv_target_arch" = "Unknown" ; then
182 AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
185 dnl Define a substitution, ARCH, for the target architecture
186 AC_SUBST(ARCH,$llvm_cv_target_arch)
188 dnl Check for the endianness of the target
189 AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
191 dnl===-----------------------------------------------------------------------===
193 dnl=== SECTION 3: Command line arguments for the configure script.
195 dnl===-----------------------------------------------------------------------===
197 dnl --enable-optimized : check whether they want to do an optimized build:
198 AC_ARG_ENABLE(optimized,
199 AS_HELP_STRING([--enable-optimized,Compile with optimizations enabled (default is NO)]),,enableval=no)
200 if test ${enableval} = "no" ; then
201 AC_SUBST(ENABLE_OPTIMIZED,[[]])
203 AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
206 dnl --enable-jit: check whether they want to enable the jit
208 AS_HELP_STRING(--enable-jit,
209 [Enable Just In Time Compiling (default is YES)]),,
211 if test ${enableval} = "no"
215 case "$llvm_cv_target_arch" in
216 x86) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
217 Sparc) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
218 PowerPC) AC_SUBST(JIT,[[TARGET_HAS_JIT=1]]) ;;
219 AMD64) AC_SUBST(JIT,[[]]) ;;
220 *) AC_SUBST(JIT,[[]]) ;;
224 dnl Allow enablement of doxygen generated documentation
225 AC_ARG_ENABLE(doxygen,
226 AS_HELP_STRING([--enable-doxygen],
227 [Build doxygen documentation (default is NO)]),,
230 yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
231 no) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
232 default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
233 *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
236 dnl===-----------------------------------------------------------------------===
238 dnl=== SECTION 4: Check for programs we need and that they are the right version
240 dnl===-----------------------------------------------------------------------===
242 dnl Check for compilation tools
249 dnl Check for the tools that the makefiles require
252 AC_PATH_PROG(CMP, [cmp], [cmp])
253 AC_PATH_PROG(CP, [cp], [cp])
254 AC_PATH_PROG(DATE, [date], [date])
255 AC_PATH_PROG(FIND, [find], [find])
256 AC_PATH_PROG(GREP, [grep], [grep])
257 AC_PATH_PROG(LLVMGCC, [llvm-gcc], [llvm-gcc])
258 AC_PATH_PROG(LLVMGXX, [llvm-g++], [llvm-g++])
259 AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
260 AC_PATH_PROG(MV, [mv], [mv])
261 AC_PATH_PROG(PAX, [pax], [pax])
263 AC_PATH_PROG(RM, [rm], [rm])
264 AC_PATH_PROG(SED, [sed], [sed])
265 AC_PATH_PROG(TAR, [tar], [gtar])
267 dnl Find the install program
270 dnl Checks for documentation and testing tools that we can do without. If these
271 dnl are not found then they are set to "true" which always succeeds but does
272 dnl nothing. This just lets the build output show that we could have done
273 dnl something if the tool was available.
274 AC_PATH_PROG(BZIP2,[bzip2],[true bzip2])
275 AC_PATH_PROG(DOT,[dot],[true dot])
276 AC_PATH_PROG(DOXYGEN,[doxygen],[true doxygen])
277 AC_PATH_PROG(ETAGS,[etags],[true etags])
278 AC_PATH_PROG(GROFF,[groff],[true groff])
279 AC_PATH_PROG(GZIP,[gzip],[true gzip])
280 AC_PATH_PROG(POD2HTML,[pod2html],[true pod2html])
281 AC_PATH_PROG(POD2MAN,[pod2man],[true pod2man])
282 AC_PATH_PROG(RUNTEST,[runtest],[true runtest])
284 AC_PATH_PROG(ZIP,[zip],[true zip])
286 dnl Determine if the linker supports the -R option.
289 dnl Check for libtool and the library that has dlopen function (which must come
290 dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
296 dnl Check if we know how to tell etags we are using C++:
297 etags_version=`$ETAGS --version 2>&1`
298 case "$etags_version" in
299 *[Ee]xuberant*) ETAGSFLAGS="--language-force=c++" ;;
300 *GNU\ Emacs*) ETAGSFLAGS="-l c++" ;;
303 AC_SUBST(ETAGSFLAGS,$ETAGSFLAGS)
305 AC_MSG_CHECKING([tool compatibility])
307 dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
308 dnl ICC; we use GCC specific options in the makefiles so the compiler needs
309 dnl to support those options.
310 dnl "icc" emits gcc signatures
311 dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
323 if test "$GCC" != "yes" && test "$ICC" != "yes"
325 AC_MSG_ERROR([gcc|icc required but not found])
328 dnl Ensure that compilation tools are GCC; we use GCC specific extensions
329 if test "$GXX" != "yes" && test "$IXX" != "yes"
331 AC_MSG_ERROR([g++|icc required but not found])
334 dnl Verify that GCC is version 3.0 or higher
335 if test "$GCC" = "yes"
337 gccmajor=`$CC --version | head -n 1 | awk '{print $NF;}' | cut -d. -f1`
338 if test "$gccmajor" -lt "3"
340 AC_MSG_ERROR([gcc 3.x required, but you have a lower version])
344 dnl Check for GNU Make. We use its extensions, so don't build without it
345 if test -z "$llvm_cv_gnu_make_command"
347 AC_MSG_ERROR([GNU Make required but not found])
350 dnl Tool compatibility is okay if we make it here.
353 dnl===-----------------------------------------------------------------------===
355 dnl=== SECTION 5: Check for libraries
357 dnl===-----------------------------------------------------------------------===
359 dnl libelf is for sparc only; we can ignore it if we don't have it
360 AC_CHECK_LIB(elf, elf_begin)
362 dnl lt_dlopen may be required for plugin support.
363 AC_SEARCH_LIBS(lt_dlopen,ltdl,AC_DEFINE([HAVE_LT_DLOPEN],[1],
364 [Define if lt_dlopen() is available on this platform]),
365 AC_MSG_WARN([lt_dlopen() not found - plugin support might
368 dnl dlopen() is required for plugin support.
369 AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
370 [Define if dlopen() is available on this platform.]),
371 AC_MSG_WARN([dlopen() not found - disabling plugin support]))
373 dnl mallinfo is optional; the code can compile (minus features) without it
374 AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
375 [Define if mallinfo() is available on this platform.]))
377 dnl pthread locking functions are optional - but llvm will not be thread-safe
379 AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
380 AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
381 [Have pthread_mutex_lock]))
383 dnl===-----------------------------------------------------------------------===
385 dnl=== SECTION 6: Check for header files
387 dnl===-----------------------------------------------------------------------===
389 dnl We don't check for ancient stuff or things that are guaranteed to be there
390 dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
393 dnl However, we do need some system specific header files. Generally we're
394 dnl looking for POSIX headers.
396 AC_CHECK_HEADERS([sys/time.h sys/mman.h sys/resource.h sys/time.h sys/types.h])
397 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h limits.h link.h])
398 AC_CHECK_HEADERS([malloc.h unistd.h windows.h])
400 AC_HEADER_MMAP_ANONYMOUS
402 dnl Check for things that need to be included in public headers, and so
403 dnl for which we may not have access to a HAVE_* preprocessor #define.
404 dnl (primarily used in DataTypes.h)
405 AC_CHECK_HEADERS([inttypes.h stdint.h])
407 dnl===-----------------------------------------------------------------------===
409 dnl=== SECTION 7: Check for types and structures
411 dnl===-----------------------------------------------------------------------===
417 AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
418 AC_CHECK_TYPES([uint64_t],,
419 AC_CHECK_TYPES([u_int64_t],,
420 AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
422 dnl===-----------------------------------------------------------------------===
424 dnl=== SECTION 8: Check for specific functions needed
426 dnl===-----------------------------------------------------------------------===
428 AC_CHECK_FUNCS([backtrace getcwd getpagesize getrusage gettimeofday isatty ])
429 AC_CHECK_FUNCS([mkdtemp mkstemp mktemp ])
430 AC_CHECK_FUNCS([realpath strdup strtoq strtoll sysconf ])
435 dnl Check for variations in the Standard C++ library and STL. These macros are
436 dnl provided by LLVM in the autoconf/m4 directory.
439 AC_CXX_HAVE_STD_ITERATOR
440 AC_CXX_HAVE_BI_ITERATOR
441 AC_CXX_HAVE_FWD_ITERATOR
445 dnl Check for mmap and mprotect support. We need both to do the JIT and for
446 dnl bytecode loading, etc.
449 AC_CHECK_FUNC(mprotect,,
450 AC_MSG_ERROR([Function mprotect() required but not found]))
452 if test "$ac_cv_func_mmap_fixed_mapped" = "no"
454 AC_MSG_WARN([mmap() required but not found])
456 if test "$ac_cv_func_mmap_file" = "no"
458 AC_MSG_WARN([mmap() of files required but not found])
461 dnl===-----------------------------------------------------------------------===
463 dnl=== SECTION 9: Additional checks, variables, etc.
465 dnl===-----------------------------------------------------------------------===
467 dnl See if the llvm-gcc executable can compile to LLVM assembly
468 AC_CACHE_CHECK([whether llvm-gcc is sane],[llvm_cv_llvmgcc_sanity],
469 [llvm_cv_llvmgcc_sanity="no"
470 if test -x "$LLVMGCC" ; then
471 cp /dev/null conftest.c
472 "$LLVMGCC" -S -o - conftest.c | grep implementation > /dev/null 2>&1
473 if test $? -eq 0 ; then
474 llvm_cv_llvmgcc_sanity="yes"
479 dnl Since we have a sane llvm-gcc, identify it and its sub-tools
480 if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then
481 llvmcc1path=`"$LLVMGCC" --print-prog-name=cc1`
482 AC_SUBST(LLVMCC1,$llvmcc1path)
483 llvmcc1pluspath=`"$LLVMGCC" --print-prog-name=cc1plus`
484 AC_SUBST(LLVMCC1PLUS,$llvmcc1pluspath)
485 llvmgccdir=`echo "$llvmcc1path" | sed 's,/libexec/.*,,'`
486 AC_SUBST(LLVMGCCDIR,$llvmgccdir)
489 dnl Propagate the shared library extension that the libltdl checks did to
490 dnl the Makefiles so we can use it there too
491 AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
493 # Translate the various configuration directories and other basic
494 # information into substitutions that will end up in Makefile.config.in
495 # that these configured values can be used by the makefiles
496 eval LLVM_PREFIX="${prefix}";
497 eval LLVM_BINDIR="${prefix}/bin";
498 eval LLVM_LIBDIR="${prefix}/lib";
499 eval LLVM_DATADIR="${prefix}/share/llvm";
500 eval LLVM_DOCSDIR="${prefix}/docs/llvm";
501 eval LLVM_ETCDIR="${prefix}/etc/llvm";
502 eval LLVM_INCLUDEDIR="${prefix}/include";
503 eval LLVM_INFODIR="${prefix}/info";
504 eval LLVM_MANDIR="${prefix}/man";
505 LLVM_CONFIGTIME=`date`
506 AC_SUBST(LLVM_PREFIX)
507 AC_SUBST(LLVM_BINDIR)
508 AC_SUBST(LLVM_LIBDIR)
509 AC_SUBST(LLVM_DATADIR)
510 AC_SUBST(LLVM_DOCSDIR)
511 AC_SUBST(LLVM_ETCDIR)
512 AC_SUBST(LLVM_INCLUDEDIR)
513 AC_SUBST(LLVM_INFODIR)
514 AC_SUBST(LLVM_MANDIR)
515 AC_SUBST(LLVM_CONFIGTIME)
517 # Place the various directores into the config.h file as #defines so that we
518 # can know about the installation paths within LLVM.
519 AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
520 [Installation prefix directory])
521 AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
522 [Installation directory for binary executables])
523 AC_DEFINE_UNQUOTED(LLVM_LIBDIR, "$LLVM_LIBDIR",
524 [Installation directory for libraries])
525 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
526 [Installation directory for data files])
527 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DOCSDIR",
528 [Installation directory for documentation])
529 AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
530 [Installation directory for config files])
531 AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
532 [Installation directory for include files])
533 AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
534 [Installation directory for .info files])
535 AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
536 [Installation directory for man pages])
537 AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
538 [Time at which LLVM was configured])
540 dnl===-----------------------------------------------------------------------===
542 dnl=== SECTION 10: Specify the output files and generate it
544 dnl===-----------------------------------------------------------------------===
546 dnl Configure header files
547 AC_CONFIG_HEADERS(include/llvm/Config/config.h)
549 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
550 AC_CONFIG_HEADERS([include/llvm/ADT/hash_map])
551 AC_CONFIG_HEADERS([include/llvm/ADT/hash_set])
552 AC_CONFIG_HEADERS([include/llvm/Support/ThreadSupport.h])
553 AC_CONFIG_HEADERS([include/llvm/ADT/iterator])
555 dnl Configure the makefile's configuration data
556 AC_CONFIG_FILES([Makefile.config])
558 dnl Configure llvmc's configuration files
559 AC_CONFIG_FILES([tools/llvmc/st tools/llvmc/cpp tools/llvmc/ll tools/llvmc/c])
561 dnl Configure doxygen's configuration file
562 AC_CONFIG_FILES([docs/doxygen.cfg])
564 dnl Do special configuration of Makefiles
565 AC_CONFIG_MAKEFILE(Makefile)
566 AC_CONFIG_MAKEFILE(Makefile.common)
567 AC_CONFIG_MAKEFILE(examples/Makefile)
568 AC_CONFIG_MAKEFILE(lib/Makefile)
569 AC_CONFIG_MAKEFILE(runtime/Makefile)
570 AC_CONFIG_MAKEFILE(test/Makefile)
571 AC_CONFIG_MAKEFILE(test/Makefile.tests)
572 AC_CONFIG_MAKEFILE(tools/Makefile)
573 AC_CONFIG_MAKEFILE(utils/Makefile)
574 AC_CONFIG_MAKEFILE(projects/Makefile)
576 dnl Finally, crank out the output
579 dnl Warn loudly if llvm-gcc was not obviously working
580 if test "$llvm_cv_llvmgcc_sanity" = "no" ; then
581 AC_MSG_WARN([***** llvm-gcc/llvm-g++ was not found, or does not appear to be ])
582 AC_MSG_WARN([***** working. Please make sure you have llvmgcc and llvmg++ in])
583 AC_MSG_WARN([***** your path before configuring LLVM. The runtime libraries])
584 AC_MSG_WARN([***** (llvm/runtime) will not be built but you should be able to])
585 AC_MSG_WARN([***** build the llvm tools.])