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]],[[2.0cvs]],[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 University of Illinois at Urbana-Champaign."])
39 AC_COPYRIGHT([Copyright (c) 2003-2005 University of Illinois at Urbana-Champaign.])
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 "privbracket") AC_CONFIG_SUBDIRS([projects/privbracket]) ;;
73 "llvm-test") AC_CONFIG_SUBDIRS([projects/llvm-test]) ;;
74 "llvm-reopt") AC_CONFIG_SUBDIRS([projects/llvm-reopt]);;
75 "llvm-gcc") AC_CONFIG_SUBDIRS([projects/llvm-gcc]) ;;
76 "llvm-java") AC_CONFIG_SUBDIRS([projects/llvm-java]) ;;
77 "llvm-tv") AC_CONFIG_SUBDIRS([projects/llvm-tv]) ;;
78 "llvm-poolalloc") AC_CONFIG_SUBDIRS([projects/llvm-poolalloc]) ;;
79 "llvm-kernel") AC_CONFIG_SUBDIRS([projects/llvm-kernel]) ;;
81 AC_MSG_WARN([Unknown project (${i}) won't be configured automatically])
87 dnl===-----------------------------------------------------------------------===
89 dnl=== SECTION 2: Architecture, target, and host checks
91 dnl===-----------------------------------------------------------------------===
93 dnl Check the target for which we're compiling and the host that will do the
94 dnl compilations. This will tell us which LLVM compiler will be used for
95 dnl compiling SSA into object code. This needs to be done early because
96 dnl following tests depend on it.
99 dnl Determine the platform type and cache its value. This helps us configure
100 dnl the System library to the correct build platform.
101 AC_CACHE_CHECK([type of operating system we're going to host on],
105 llvm_cv_link_all_option="-Wl,--whole-archive"
106 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
107 llvm_cv_os_type="AIX"
108 llvm_cv_platform_type="Unix" ;;
110 llvm_cv_link_all_option="-Wl,--whole-archive"
111 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
112 llvm_cv_os_type="IRIX"
113 llvm_cv_platform_type="Unix" ;;
115 llvm_cv_link_all_option="-Wl,--whole-archive"
116 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
117 llvm_cv_os_type="Cygwin"
118 llvm_cv_platform_type="Unix" ;;
120 llvm_cv_link_all_option="-Wl,-all_load"
121 llvm_cv_link_all_option="-Wl,-noall_load"
122 llvm_cv_os_type="Darwin"
123 llvm_cv_platform_type="Unix" ;;
125 llvm_cv_link_all_option="-Wl,--whole-archive"
126 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
127 llvm_cv_os_type="FreeBSD"
128 llvm_cv_platform_type="Unix" ;;
130 llvm_cv_link_all_option="-Wl,--whole-archive"
131 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
132 llvm_cv_os_type="OpenBSD"
133 llvm_cv_platform_type="Unix" ;;
135 llvm_cv_link_all_option="-Wl,--whole-archive"
136 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
137 llvm_cv_os_type="HP-UX"
138 llvm_cv_platform_type="Unix" ;;
140 llvm_cv_link_all_option="-Wl,--whole-archive"
141 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
142 llvm_cv_os_type="Interix"
143 llvm_cv_platform_type="Unix" ;;
145 llvm_cv_link_all_option="-Wl,--whole-archive"
146 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
147 llvm_cv_os_type="Linux"
148 llvm_cv_platform_type="Unix" ;;
150 llvm_cv_link_all_option="-Wl,-z,allextract"
151 llvm_cv_no_link_all_option="-Wl,-z,defaultextract"
152 llvm_cv_os_type="SunOS"
153 llvm_cv_platform_type="Unix" ;;
155 llvm_cv_link_all_option="-Wl,--whole-archive"
156 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
157 llvm_cv_os_type="Win32"
158 llvm_cv_platform_type="Win32" ;;
160 llvm_cv_link_all_option="-Wl,--whole-archive"
161 llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
162 llvm_cv_os_type="MingW"
163 llvm_cv_platform_type="Win32" ;;
165 llvm_cv_link_all_option=""
166 llvm_cv_no_link_all_option=""
167 llvm_cv_os_type="Unknown"
168 llvm_cv_platform_type="Unknown" ;;
171 dnl Make sure we aren't attempting to configure for an unknown system
172 if test "$llvm_cv_os_type" = "Unknown" ; then
173 AC_MSG_ERROR([Operating system is unknown, configure can't continue])
176 dnl Set the "OS" Makefile variable based on the platform type so the
177 dnl makefile can configure itself to specific build hosts
178 AC_SUBST(OS,$llvm_cv_os_type)
180 dnl Set the LINKALL and NOLINKALL Makefile variables based on the platform
181 AC_SUBST(LINKALL,$llvm_cv_link_all_option)
182 AC_SUBST(NOLINKALL,$llvm_cv_no_link_all_option)
184 dnl Set the "LLVM_ON_*" variables based on llvm_cvs_platform_type
185 dnl This is used by lib/System to determine the basic kind of implementation
187 case $llvm_cv_platform_type in
189 AC_DEFINE([LLVM_ON_UNIX],[1],[Define if this is Unixish platform])
190 AC_SUBST(LLVM_ON_UNIX,[1])
191 AC_SUBST(LLVM_ON_WIN32,[0])
194 AC_DEFINE([LLVM_ON_WIN32],[1],[Define if this is Win32ish platform])
195 AC_SUBST(LLVM_ON_UNIX,[0])
196 AC_SUBST(LLVM_ON_WIN32,[1])
200 dnl Determine what our target architecture is and configure accordingly.
201 dnl This will allow Makefiles to make a distinction between the hardware and
203 AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
205 i?86-*) llvm_cv_target_arch="x86" ;;
206 amd64-* | x86_64-*) llvm_cv_target_arch="x86_64" ;;
207 sparc*-*) llvm_cv_target_arch="Sparc" ;;
208 powerpc*-*) llvm_cv_target_arch="PowerPC" ;;
209 alpha*-*) llvm_cv_target_arch="Alpha" ;;
210 ia64-*) llvm_cv_target_arch="IA64" ;;
211 *) llvm_cv_target_arch="Unknown" ;;
214 if test "$llvm_cv_target_arch" = "Unknown" ; then
215 AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
218 dnl Define a substitution, ARCH, for the target architecture
219 AC_SUBST(ARCH,$llvm_cv_target_arch)
221 dnl Check for the endianness of the target
222 AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
224 dnl Check for build platform executable suffix if we're crosscompiling
225 if test "$cross_compiling" = yes; then
226 AC_SUBST(LLVM_CROSS_COMPILING, [1])
229 AC_SUBST(LLVM_CROSS_COMPILING, [0])
232 dnl Check to see if there's a "CVS" directory indicating that this build is
233 dnl being done from a CVS checkout. This sets up several defaults for the
234 dnl command line switches. When we build with a CVS directory, we get a
235 dnl debug with assertions turned on. Without, we assume a source release and we
236 dnl get an optimized build without assertions. See --enable-optimized and
237 dnl --enable-assertions below
238 if test -d "CVS" -o -d "${srcdir}/CVS"; then
241 AC_SUBST(CVSBUILD,[[CVSBUILD=1]])
247 dnl===-----------------------------------------------------------------------===
249 dnl=== SECTION 3: Command line arguments for the configure script.
251 dnl===-----------------------------------------------------------------------===
253 dnl --enable-optimized : check whether they want to do an optimized build:
254 AC_ARG_ENABLE(optimized, AS_HELP_STRING(
255 [--enable-optimized,Compile with optimizations enabled (default is NO)]),,enableval=$optimize)
256 if test ${enableval} = "no" ; then
257 AC_SUBST(ENABLE_OPTIMIZED,[[]])
259 AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
262 dnl --enable-assertions : check whether they want to turn on assertions or not:
263 AC_ARG_ENABLE(assertions,AS_HELP_STRING(
264 [--enable-assertions,Compile with assertion checks enabled (default is YES)]),, enableval="yes")
265 if test ${enableval} = "yes" ; then
266 AC_SUBST(DISABLE_ASSERTIONS,[[]])
268 AC_SUBST(DISABLE_ASSERTIONS,[[DISABLE_ASSERTIONS=1]])
271 dnl --enable-jit: check whether they want to enable the jit
273 AS_HELP_STRING(--enable-jit,
274 [Enable Just In Time Compiling (default is YES)]),,
276 if test ${enableval} = "no"
280 case "$llvm_cv_target_arch" in
281 x86) AC_SUBST(TARGET_HAS_JIT,1) ;;
282 Sparc) AC_SUBST(TARGET_HAS_JIT,1) ;;
283 PowerPC) AC_SUBST(TARGET_HAS_JIT,1) ;;
284 x86_64) AC_SUBST(TARGET_HAS_JIT,0) ;;
285 Alpha) AC_SUBST(TARGET_HAS_JIT,1) ;;
286 IA64) AC_SUBST(TARGET_HAS_JIT,0) ;;
287 *) AC_SUBST(TARGET_HAS_JIT,0) ;;
291 dnl Allow enablement of doxygen generated documentation
292 AC_ARG_ENABLE(doxygen,
293 AS_HELP_STRING([--enable-doxygen],
294 [Build doxygen documentation (default is NO)]),,
297 yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
298 no) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
299 default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
300 *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
303 dnl Allow disablement of threads
304 AC_ARG_ENABLE(threads,
305 AS_HELP_STRING([--enable-threads],
306 [Use threads if available (default is YES)]),,
309 yes) AC_SUBST(ENABLE_THREADS,[1]) ;;
310 no) AC_SUBST(ENABLE_THREADS,[0]) ;;
311 default) AC_SUBST(ENABLE_THREADS,[1]) ;;
312 *) AC_MSG_ERROR([Invalid setting for --enable-threads. Use "yes" or "no"]) ;;
314 AC_DEFINE_UNQUOTED([ENABLE_THREADS],$ENABLE_THREADS,[Define if threads enabled])
316 dnl Allow specific targets to be specified for building (or not)
318 AC_ARG_ENABLE([targets],AS_HELP_STRING([--enable-targets],
319 [Build specific host targets: all,host-only,{target-name} (default=all)]),,
322 all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha IA64 ARM" ;;
324 case "$llvm_cv_target_arch" in
325 x86) TARGETS_TO_BUILD="X86" ;;
326 x86_64) TARGETS_TO_BUILD="X86" ;;
327 Sparc) TARGETS_TO_BUILD="Sparc" ;;
328 PowerPC) TARGETS_TO_BUILD="PowerPC" ;;
329 Alpha) TARGETS_TO_BUILD="Alpha" ;;
330 IA64) TARGETS_TO_BUILD="IA64" ;;
331 *) AC_MSG_ERROR([Can not set target to build]) ;;
334 *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
336 x86) TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
337 x86_64) TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
338 sparc) TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
339 powerpc) TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
340 alpha) TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
341 ia64) TARGETS_TO_BUILD="IA64 $TARGETS_TO_BUILD" ;;
342 *) AC_MSG_ERROR([Unrecognized target $a_target]) ;;
347 TARGETS_TO_BUILD="CBackend $TARGETS_TO_BUILD"
348 AC_SUBST(TARGETS_TO_BUILD,$TARGETS_TO_BUILD)
350 dnl Prevent the CBackend from using printf("%a") for floating point so older
351 dnl C compilers that cannot deal with the 0x0p+0 hex floating point format
352 dnl can still compile the CBE's output
353 AC_ARG_ENABLE([cbe-printf-a],AS_HELP_STRING([--enable-cbe-printf-a],
354 [Enable C Backend output with hex floating point via %a (default is YES)]),,
357 yes) AC_SUBST(ENABLE_CBE_PRINTF_A,[1]) ;;
358 no) AC_SUBST(ENABLE_CBE_PRINTF_A,[0]) ;;
359 default) AC_SUBST(ENABLE_CBE_PRINTF_A,[1]) ;;
360 *) AC_MSG_ERROR([Invalid setting for --enable-cbe-printf-a. Use "yes" or "no"]) ;;
362 AC_DEFINE_UNQUOTED([ENABLE_CBE_PRINTF_A],$ENABLE_CBE_PRINTF_A,
363 [Define if CBE is enabled for printf %a output])
365 dnl Allow a specific llvm-gcc/llvm-g++ pair to be used with this LLVM config.
366 AC_ARG_WITH(llvmgccdir,
367 AS_HELP_STRING([--with-llvmgccdir],
368 [Specify location of llvm-gcc install dir (default searches PATH)]),,
371 default) WITH_LLVMGCCDIR=default ;;
372 /* | [[A-Za-z]]:[[\\/]]*) WITH_LLVMGCCDIR=$withval ;;
373 *) AC_MSG_ERROR([Invalid path for --with-llvmgccdir. Provide full path]) ;;
376 dnl Specify extra build options
377 AC_ARG_WITH(extra-options,
378 AS_HELP_STRING([--with-extra-options],
379 [Specify addtional options to compile LLVM with]),,
382 default) EXTRA_OPTIONS= ;;
383 *) EXTRA_OPTIONS=$withval ;;
385 AC_SUBST(EXTRA_OPTIONS,$EXTRA_OPTIONS)
387 dnl===-----------------------------------------------------------------------===
389 dnl=== SECTION 4: Check for programs we need and that they are the right version
391 dnl===-----------------------------------------------------------------------===
393 dnl Check for compilation tools
403 dnl Check for the tools that the makefiles require
406 AC_PATH_PROG(CMP, [cmp], [cmp])
407 AC_PATH_PROG(CP, [cp], [cp])
408 AC_PATH_PROG(DATE, [date], [date])
409 AC_PATH_PROG(FIND, [find], [find])
410 AC_PATH_PROG(GREP, [grep], [grep])
411 AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
412 AC_PATH_PROG(MV, [mv], [mv])
414 AC_PATH_PROG(RM, [rm], [rm])
415 AC_PATH_PROG(SED, [sed], [sed])
416 AC_PATH_PROG(TAR, [tar], [gtar])
417 AC_PATH_PROG(BINPWD,[pwd], [pwd])
419 dnl Looking for misc. graph plotting software
420 AC_PATH_PROG(GRAPHVIZ, [Graphviz], [echo Graphviz])
421 if test "$GRAPHVIZ" != "echo Graphviz" ; then
422 AC_DEFINE([HAVE_GRAPHVIZ],[1],[Define if the Graphviz program is available])
423 dnl If we're targeting for mingw we should emit windows paths, not msys
424 if test "$llvm_cv_os_type" == "MingW" ; then
425 GRAPHVIZ=`echo $GRAPHVIZ | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
427 AC_DEFINE_UNQUOTED([LLVM_PATH_GRAPHVIZ],"$GRAPHVIZ${EXEEXT}",
428 [Define to path to Graphviz program if found or 'echo Graphviz' otherwise])
430 AC_PATH_PROG(DOT, [dot], [echo dot])
431 if test "$DOT" != "echo dot" ; then
432 AC_DEFINE([HAVE_DOT],[1],[Define if the dot program is available])
433 dnl If we're targeting for mingw we should emit windows paths, not msys
434 if test "$llvm_cv_os_type" == "MingW" ; then
435 DOT=`echo $DOT | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
437 AC_DEFINE_UNQUOTED([LLVM_PATH_DOT],"$DOT${EXEEXT}",
438 [Define to path to dot program if found or 'echo dot' otherwise])
440 AC_PATH_PROGS(GV, [gv gsview32], [echo gv])
441 if test "$GV" != "echo gv" ; then
442 AC_DEFINE([HAVE_GV],[1],[Define if the gv program is available])
443 dnl If we're targeting for mingw we should emit windows paths, not msys
444 if test "$llvm_cv_os_type" == "MingW" ; then
445 GV=`echo $GV | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
447 AC_DEFINE_UNQUOTED([LLVM_PATH_GV],"$GV${EXEEXT}",
448 [Define to path to gv program if found or 'echo gv' otherwise])
450 AC_PATH_PROG(DOTTY, [dotty], [echo dotty])
451 if test "$DOTTY" != "echo dotty" ; then
452 AC_DEFINE([HAVE_DOTTY],[1],[Define if the dotty program is available])
453 dnl If we're targeting for mingw we should emit windows paths, not msys
454 if test "$llvm_cv_os_type" == "MingW" ; then
455 DOTTY=`echo $DOTTY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
457 AC_DEFINE_UNQUOTED([LLVM_PATH_DOTTY],"$DOTTY${EXEEXT}",
458 [Define to path to dotty program if found or 'echo dotty' otherwise])
461 dnl Look for a sufficiently recent version of Perl.
462 LLVM_PROG_PERL([5.006])
464 if test x"$PERL" = xnone; then
465 AC_SUBST(HAVE_PERL,0)
467 AC_SUBST(HAVE_PERL,1)
470 dnl Find the install program
473 dnl Checks for documentation and testing tools that we can do without. If these
474 dnl are not found then they are set to "true" which always succeeds but does
475 dnl nothing. This just lets the build output show that we could have done
476 dnl something if the tool was available.
477 AC_PATH_PROG(BZIP2,[bzip2],[echo "Skipped: bzip2 not found"])
478 AC_PATH_PROG(DOXYGEN,[doxygen],[echo "Skipped: doxygen not found"])
479 AC_PATH_PROG(GROFF,[groff],[echo "Skipped: groff not found"])
480 AC_PATH_PROG(GZIP,[gzip],[echo "Skipped: gzip not found"])
481 AC_PATH_PROG(POD2HTML,[pod2html],[echo "Skipped: pod2html not found"])
482 AC_PATH_PROG(POD2MAN,[pod2man],[echo "Skipped: pod2man not found"])
483 AC_PATH_PROG(RUNTEST,[runtest],[echo "Skipped: runtest not found"])
485 AC_PATH_PROG(ZIP,[zip],[echo "Skipped: zip not found"])
487 dnl Determine if the linker supports the -R option.
490 dnl Check for libtool and the library that has dlopen function (which must come
491 dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
497 if test "$lt_cv_dlopen_self" = "yes" ; then
498 AC_DEFINE([CAN_DLOPEN_SELF],[1],
499 [Define if dlopen(0) will open the symbols of the program])
502 dnl Check if we know how to tell etags we are using C++:
503 etags_version=`$ETAGS --version 2>&1`
504 case "$etags_version" in
505 *[Ee]xuberant*) ETAGSFLAGS="--language-force=c++" ;;
506 *GNU\ Emacs*) ETAGSFLAGS="-l c++" ;;
509 AC_SUBST(ETAGSFLAGS,$ETAGSFLAGS)
511 if test "$WITH_LLVMGCCDIR" = "default" ; then
512 LLVMGCC="llvm-gcc${EXEEXT}"
513 LLVMGXX="llvm-g++${EXEEXT}"
514 AC_PATH_PROG(LLVMGCC, $LLVMGCC, [])
515 AC_PATH_PROG(LLVMGXX, $LLVMGXX, [])
517 LLVMGCC="$WITH_LLVMGCCDIR/bin/llvm-gcc${EXEEXT}"
518 LLVMGXX="$WITH_LLVMGCCDIR/bin/llvm-g++${EXEEXT}"
519 AC_SUBST(LLVMGCC,$LLVMGCC)
520 AC_SUBST(LLVMGXX,$LLVMGXX)
523 AC_MSG_CHECKING([tool compatibility])
525 dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
526 dnl ICC; we use GCC specific options in the makefiles so the compiler needs
527 dnl to support those options.
528 dnl "icc" emits gcc signatures
529 dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
541 if test "$GCC" != "yes" && test "$ICC" != "yes"
543 AC_MSG_ERROR([gcc|icc required but not found])
546 dnl Ensure that compilation tools are GCC; we use GCC specific extensions
547 if test "$GXX" != "yes" && test "$IXX" != "yes"
549 AC_MSG_ERROR([g++|icc required but not found])
552 dnl Verify that GCC is version 3.0 or higher
553 if test "$GCC" = "yes"
555 gccmajor=`$CC --version | head -n 1 | sed 's/[[^0-9]]*\([[0-9.]]\).*/\1/'`
556 if test "$gccmajor" -lt "3"
558 AC_MSG_ERROR([gcc 3.x required, but you have a lower version])
562 dnl Check for GNU Make. We use its extensions, so don't build without it
563 if test -z "$llvm_cv_gnu_make_command"
565 AC_MSG_ERROR([GNU Make required but not found])
568 dnl Tool compatibility is okay if we make it here.
571 dnl===-----------------------------------------------------------------------===
573 dnl=== SECTION 5: Check for libraries
575 dnl===-----------------------------------------------------------------------===
577 dnl libelf is for sparc only; we can ignore it if we don't have it
578 AC_CHECK_LIB(elf, elf_begin)
580 if test "$llvm_cv_os_type" == "MingW" ; then
581 AC_CHECK_LIB(imagehlp, main)
582 AC_CHECK_LIB(psapi, main)
585 dnl lt_dlopen may be required for plugin support.
586 AC_SEARCH_LIBS(lt_dlopen,ltdl,AC_DEFINE([HAVE_LT_DLOPEN],[1],
587 [Define if lt_dlopen() is available on this platform]),
588 AC_MSG_WARN([lt_dlopen() not found - plugin support might
591 dnl dlopen() is required for plugin support.
592 AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
593 [Define if dlopen() is available on this platform.]),
594 AC_MSG_WARN([dlopen() not found - disabling plugin support]))
596 dnl mallinfo is optional; the code can compile (minus features) without it
597 AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
598 [Define if mallinfo() is available on this platform.]))
600 dnl pthread locking functions are optional - but llvm will not be thread-safe
602 if test "$ENABLE_THREADS" -eq 1 ; then
603 AC_CHECK_LIB(pthread,pthread_mutex_init)
604 AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
605 AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
606 [Have pthread_mutex_lock]))
609 dnl===-----------------------------------------------------------------------===
611 dnl=== SECTION 6: Check for header files
613 dnl===-----------------------------------------------------------------------===
615 dnl First, use autoconf provided macros for specific headers that we need
616 dnl We don't check for ancient stuff or things that are guaranteed to be there
617 dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
618 dnl Generally we're looking for POSIX headers.
620 AC_HEADER_MMAP_ANONYMOUS
626 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
627 AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h unistd.h utime.h])
628 AC_CHECK_HEADERS([windows.h sys/mman.h sys/param.h sys/resource.h sys/time.h])
629 AC_CHECK_HEADERS([sys/types.h malloc/malloc.h mach/mach.h])
630 if test "$ENABLE_THREADS" -eq 1 ; then
631 AC_CHECK_HEADERS(pthread.h)
634 dnl===-----------------------------------------------------------------------===
636 dnl=== SECTION 7: Check for types and structures
638 dnl===-----------------------------------------------------------------------===
645 AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
646 AC_CHECK_TYPES([uint64_t],,
647 AC_CHECK_TYPES([u_int64_t],,
648 AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
650 dnl===-----------------------------------------------------------------------===
652 dnl=== SECTION 8: Check for specific functions needed
654 dnl===-----------------------------------------------------------------------===
656 AC_CHECK_FUNCS([backtrace ceilf floorf roundf rintf nearbyintf getcwd ])
657 AC_CHECK_FUNCS([getpagesize getrusage gettimeofday isatty mkdtemp mkstemp ])
658 AC_CHECK_FUNCS([mktemp realpath sbrk setrlimit strdup strerror strerror_r ])
659 AC_CHECK_FUNCS([strtoll strtoq sysconf malloc_zone_statistics ])
660 AC_CHECK_FUNCS([_setjmp _longjmp setjmp longjmp sigsetjmp siglongjmp])
665 dnl Check for variations in the Standard C++ library and STL. These macros are
666 dnl provided by LLVM in the autoconf/m4 directory.
669 AC_CXX_HAVE_STD_ITERATOR
670 AC_CXX_HAVE_BI_ITERATOR
671 AC_CXX_HAVE_FWD_ITERATOR
675 dnl Check for mmap and mprotect support. We need both to do the JIT and for
676 dnl bytecode loading, etc. We also need to know if /dev/zero is required to
677 dnl be opened for allocating RWX memory.
680 AC_NEED_DEV_ZERO_FOR_MMAP
681 AC_CHECK_FUNC(mprotect,,
682 AC_MSG_ERROR([Function mprotect() required but not found]))
684 if test "$ac_cv_func_mmap_fixed_mapped" = "no"
686 AC_MSG_WARN([mmap() of a fixed address required but not supported])
688 if test "$ac_cv_func_mmap_file" = "no"
690 AC_MSG_WARN([mmap() of files required but not found])
693 dnl===-----------------------------------------------------------------------===
695 dnl=== SECTION 9: Additional checks, variables, etc.
697 dnl===-----------------------------------------------------------------------===
699 dnl See if the llvm-gcc executable can compile to LLVM assembly
700 AC_CACHE_CHECK([whether llvm-gcc is sane],[llvm_cv_llvmgcc_sanity],
701 [llvm_cv_llvmgcc_sanity="no"
702 if test -x "$LLVMGCC" ; then
703 cp /dev/null conftest.c
704 "$LLVMGCC" -emit-llvm -S -o - conftest.c | grep implementation > /dev/null 2>&1
705 if test $? -eq 0 ; then
706 llvm_cv_llvmgcc_sanity="yes"
711 dnl Since we have a sane llvm-gcc, identify it and its sub-tools
712 if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then
713 llvmcc1path=`"$LLVMGCC" --print-prog-name=cc1`
714 AC_SUBST(LLVMCC1,$llvmcc1path)
715 llvmcc1pluspath=`"$LLVMGCC" --print-prog-name=cc1plus`
716 AC_SUBST(LLVMCC1PLUS,$llvmcc1pluspath)
717 llvmgccdir=`echo "$llvmcc1path" | sed 's,/libexec/.*,,'`
718 AC_SUBST(LLVMGCCDIR,$llvmgccdir)
719 llvmgccversion=[`"$LLVMGCC" -dumpversion 2>&1 | sed 's/^\([0-9.]*\).*/\1/'`]
720 llvmgccmajvers=[`echo $llvmgccversion | sed 's/^\([0-9]\).*/\1/'`]
721 AC_SUBST(LLVMGCC_VERSION,$llvmgccversion)
722 AC_SUBST(LLVMGCC_MAJVERS,$llvmgccmajvers)
725 dnl Propagate the shared library extension that the libltdl checks did to
726 dnl the Makefiles so we can use it there too
727 AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
729 # Translate the various configuration directories and other basic
730 # information into substitutions that will end up in Makefile.config.in
731 # that these configured values can be used by the makefiles
732 if test "${prefix}" == "NONE" ; then
735 eval LLVM_PREFIX="${prefix}";
736 eval LLVM_BINDIR="${prefix}/bin";
737 eval LLVM_LIBDIR="${prefix}/lib";
738 eval LLVM_DATADIR="${prefix}/share/llvm";
739 eval LLVM_DOCSDIR="${prefix}/docs/llvm";
740 eval LLVM_ETCDIR="${prefix}/etc/llvm";
741 eval LLVM_INCLUDEDIR="${prefix}/include";
742 eval LLVM_INFODIR="${prefix}/info";
743 eval LLVM_MANDIR="${prefix}/man";
744 LLVM_CONFIGTIME=`date`
745 AC_SUBST(LLVM_PREFIX)
746 AC_SUBST(LLVM_BINDIR)
747 AC_SUBST(LLVM_LIBDIR)
748 AC_SUBST(LLVM_DATADIR)
749 AC_SUBST(LLVM_DOCSDIR)
750 AC_SUBST(LLVM_ETCDIR)
751 AC_SUBST(LLVM_INCLUDEDIR)
752 AC_SUBST(LLVM_INFODIR)
753 AC_SUBST(LLVM_MANDIR)
754 AC_SUBST(LLVM_CONFIGTIME)
756 # Place the various directores into the config.h file as #defines so that we
757 # can know about the installation paths within LLVM.
758 AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
759 [Installation prefix directory])
760 AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
761 [Installation directory for binary executables])
762 AC_DEFINE_UNQUOTED(LLVM_LIBDIR, "$LLVM_LIBDIR",
763 [Installation directory for libraries])
764 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
765 [Installation directory for data files])
766 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DOCSDIR",
767 [Installation directory for documentation])
768 AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
769 [Installation directory for config files])
770 AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
771 [Installation directory for include files])
772 AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
773 [Installation directory for .info files])
774 AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
775 [Installation directory for man pages])
776 AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
777 [Time at which LLVM was configured])
779 dnl===-----------------------------------------------------------------------===
781 dnl=== SECTION 10: Specify the output files and generate it
783 dnl===-----------------------------------------------------------------------===
785 dnl Configure header files
786 dnl WARNING: dnl If you add or remove any of the following config headers, then
787 dnl you MUST also update Makefile.rules so that the variable FilesToConfig
788 dnl contains the same list of files as AC_CONFIG_HEADERS below. This ensures the
789 dnl files can be updated automatically when their *.in sources change.
790 AC_CONFIG_HEADERS([include/llvm/Config/config.h])
791 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
792 AC_CONFIG_HEADERS([include/llvm/ADT/hash_map])
793 AC_CONFIG_HEADERS([include/llvm/ADT/hash_set])
794 AC_CONFIG_HEADERS([include/llvm/ADT/iterator])
796 dnl Configure the makefile's configuration data
797 AC_CONFIG_FILES([Makefile.config])
799 dnl Configure the RPM spec file for LLVM
800 AC_CONFIG_FILES([llvm.spec])
802 dnl Configure doxygen's configuration file
803 AC_CONFIG_FILES([docs/doxygen.cfg])
805 dnl Do the first stage of configuration for llvm-config.in.
806 AC_CONFIG_FILES([tools/llvm-config/llvm-config.in])
808 dnl Do special configuration of Makefiles
809 AC_CONFIG_COMMANDS([setup],,[llvm_src="${srcdir}"])
810 AC_CONFIG_MAKEFILE(Makefile)
811 AC_CONFIG_MAKEFILE(Makefile.common)
812 AC_CONFIG_MAKEFILE(examples/Makefile)
813 AC_CONFIG_MAKEFILE(lib/Makefile)
814 AC_CONFIG_MAKEFILE(test/Makefile)
815 AC_CONFIG_MAKEFILE(test/Makefile.tests)
816 AC_CONFIG_MAKEFILE(tools/Makefile)
817 AC_CONFIG_MAKEFILE(utils/Makefile)
818 AC_CONFIG_MAKEFILE(projects/Makefile)
820 dnl Finally, crank out the output
823 dnl Warn loudly if llvm-gcc was not obviously working
824 if test "$llvm_cv_llvmgcc_sanity" = "no" ; then
825 AC_MSG_WARN([***** llvm-gcc/llvm-g++ was not found, or does not appear to be ])
826 AC_MSG_WARN([***** working. Please make sure you have llvm-gcc and llvm-g++ ])
827 AC_MSG_WARN([***** in your path before configuring LLVM.])