xref: /netbsd-src/external/gpl3/gdb/dist/gdbsupport/common.m4 (revision 32d1c65c71fbdb65a012e8392a62a757dd6853e9) 
1dnl Autoconf configure snippets for common.
2dnl Copyright (C) 1995-2024 Free Software Foundation, Inc.
3dnl
4dnl This file is part of GDB.
5dnl
6dnl This program is free software; you can redistribute it and/or modify
7dnl it under the terms of the GNU General Public License as published by
8dnl the Free Software Foundation; either version 3 of the License, or
9dnl (at your option) any later version.
10dnl
11dnl This program is distributed in the hope that it will be useful,
12dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
13dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14dnl GNU General Public License for more details.
15dnl
16dnl You should have received a copy of the GNU General Public License
17dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
18
19dnl Invoke configury needed by the files in 'common'.
20AC_DEFUN([GDB_AC_COMMON], [
21  # Set the 'development' global.
22  . $srcdir/../bfd/development.sh
23
24  AC_HEADER_STDC
25  AC_FUNC_ALLOCA
26
27  WIN32APILIBS=
28  case ${host} in
29    *mingw32*)
30      AC_DEFINE(USE_WIN32API, 1,
31		[Define if we should use the Windows API, instead of the
32		 POSIX API.  On Windows, we use the Windows API when
33		 building for MinGW, but the POSIX API when building
34		 for Cygwin.])
35      WIN32APILIBS="-lws2_32"
36      ;;
37  esac
38
39  dnl Note that this requires codeset.m4, which is included
40  dnl by the users of common.m4.
41  AM_LANGINFO_CODESET
42
43  AC_CHECK_HEADERS(linux/perf_event.h locale.h memory.h signal.h dnl
44		   sys/resource.h sys/socket.h dnl
45		   sys/un.h sys/wait.h dnl
46		   thread_db.h wait.h dnl
47		   termios.h dnl
48		   dlfcn.h dnl
49		   linux/elf.h proc_service.h dnl
50		   poll.h sys/poll.h sys/select.h)
51
52  AC_FUNC_MMAP
53  AC_FUNC_FORK
54  # Some systems (e.g. Solaris) have `socketpair' in libsocket.
55  AC_SEARCH_LIBS(socketpair, socket)
56  AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 poll socketpair sigaction \
57		  ptrace64 sbrk setns sigaltstack sigprocmask \
58		  setpgid setpgrp getrusage getauxval sigtimedwait])
59
60  # This is needed for RHEL 5 and uclibc-ng < 1.0.39.
61  # These did not define ADDR_NO_RANDOMIZE in sys/personality.h,
62  # only in linux/personality.h.
63  AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
64
65  AC_CHECK_DECLS([strstr])
66
67  # ----------------------- #
68  # Checks for structures.  #
69  # ----------------------- #
70
71  AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
72
73  # On FreeBSD we need libutil for the kinfo_get* functions.  On
74  # GNU/kFreeBSD systems, FreeBSD libutil is renamed to libutil-freebsd.
75  # Figure out which one to use.
76  AC_SEARCH_LIBS(kinfo_getfile, util util-freebsd)
77
78  # Define HAVE_KINFO_GETFILE if kinfo_getfile is available.
79  AC_CHECK_FUNCS(kinfo_getfile)
80
81  # ----------------------- #
82  # Check for threading.    #
83  # ----------------------- #
84
85  AC_ARG_ENABLE(threading,
86    AS_HELP_STRING([--enable-threading], [include support for parallel processing of data (yes/no)]),
87    [case "$enableval" in
88    yes) want_threading=yes ;;
89    no) want_threading=no ;;
90    *) AC_MSG_ERROR([bad value $enableval for threading]) ;;
91    esac],
92    [want_threading=auto])
93
94  # Check for std::thread.  This does not work on some platforms, like
95  # mingw using the win32 threads model with gcc older than 13, and
96  # DJGPP.
97  AC_LANG_PUSH([C++])
98  AX_PTHREAD([threads=yes], [threads=no])
99  save_LIBS="$LIBS"
100  LIBS="$PTHREAD_LIBS $LIBS"
101  save_CXXFLAGS="$CXXFLAGS"
102  CXXFLAGS="$PTHREAD_CFLAGS $save_CXXFLAGS"
103  AC_CACHE_CHECK([for std::thread],
104		 gdb_cv_cxx_std_thread,
105		 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
106  dnl NOTE: this must be kept in sync with common-defs.h.
107  [[#if defined (__MINGW32__) || defined (__CYGWIN__)
108    # ifdef _WIN32_WINNT
109    #  if _WIN32_WINNT < 0x0501
110    #   undef _WIN32_WINNT
111    #   define _WIN32_WINNT 0x0501
112    #  endif
113    # else
114    #  define _WIN32_WINNT 0x0501
115    # endif
116    #endif	/* __MINGW32__ || __CYGWIN__ */
117    #include <thread>
118    #include <mutex>
119    void callback() { }]],
120  [[std::thread t(callback);]])],
121				gdb_cv_cxx_std_thread=yes,
122				gdb_cv_cxx_std_thread=no)])
123
124  if test "$threads" = "yes"; then
125    # This check must be here, while LIBS includes any necessary
126    # threading library.
127    AC_CHECK_FUNCS([pthread_sigmask pthread_setname_np])
128  fi
129  LIBS="$save_LIBS"
130  CXXFLAGS="$save_CXXFLAGS"
131
132  if test "$want_threading" != "no"; then
133    if test "$gdb_cv_cxx_std_thread" = "yes"; then
134      AC_DEFINE(CXX_STD_THREAD, 1,
135		[Define to 1 if std::thread works.])
136    else
137	if test "$want_threading" = "yes"; then
138	    AC_MSG_ERROR([std::thread does not work; disable threading])
139	else
140	    AC_MSG_WARN([std::thread does not work; disabling threading])
141	fi
142    fi
143  fi
144  AC_LANG_POP
145
146  dnl Check if sigsetjmp is available.  Using AC_CHECK_FUNCS won't
147  dnl do since sigsetjmp might only be defined as a macro.
148  AC_CACHE_CHECK(
149    [for sigsetjmp],
150    [gdb_cv_func_sigsetjmp],
151    [AC_COMPILE_IFELSE(
152       [AC_LANG_PROGRAM(
153          [#include <setjmp.h>],
154          [sigjmp_buf env;
155           while (! sigsetjmp (env, 1))
156             siglongjmp (env, 1);]
157        )],
158       [gdb_cv_func_sigsetjmp=yes],
159       [gdb_cv_func_sigsetjmp=no]
160     )]
161  )
162  if test "$gdb_cv_func_sigsetjmp" = "yes"; then
163    AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
164  fi
165
166  AC_ARG_WITH(intel_pt,
167    AS_HELP_STRING([--with-intel-pt], [include Intel Processor Trace support (auto/yes/no)]),
168    [], [with_intel_pt=auto])
169  AC_MSG_CHECKING([whether to use intel pt])
170  AC_MSG_RESULT([$with_intel_pt])
171
172  if test "${with_intel_pt}" = no; then
173    AC_MSG_WARN([Intel Processor Trace support disabled; some features may be unavailable.])
174    HAVE_LIBIPT=no
175  else
176    AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
177  #include <linux/perf_event.h>
178  #ifndef PERF_ATTR_SIZE_VER5
179  # error
180  #endif
181    ]])], [perf_event=yes], [perf_event=no])
182    if test "$perf_event" != yes; then
183      if test "$with_intel_pt" = yes; then
184	AC_MSG_ERROR([linux/perf_event.h missing or too old])
185      else
186	AC_MSG_WARN([linux/perf_event.h missing or too old; some features may be unavailable.])
187      fi
188    fi
189
190    AC_LIB_HAVE_LINKFLAGS([ipt], [], [#include "intel-pt.h"], [pt_insn_alloc_decoder (0);])
191    if test "$HAVE_LIBIPT" != yes; then
192      if test "$with_intel_pt" = yes; then
193	AC_MSG_ERROR([libipt is missing or unusable])
194      else
195	AC_MSG_WARN([libipt is missing or unusable; some features may be unavailable.])
196      fi
197    else
198      save_LIBS=$LIBS
199      LIBS="$LIBS $LIBIPT"
200      AC_CHECK_FUNCS(pt_insn_event)
201      AC_CHECK_MEMBERS([struct pt_insn.enabled, struct pt_insn.resynced], [], [],
202		       [#include <intel-pt.h>])
203      LIBS=$save_LIBS
204    fi
205  fi
206
207  # Check if the compiler and runtime support printing long longs.
208
209  AC_CACHE_CHECK([for long long support in printf],
210		 gdb_cv_printf_has_long_long,
211		 [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
212  [[char buf[32];
213    long long l = 0;
214    l = (l << 16) + 0x0123;
215    l = (l << 16) + 0x4567;
216    l = (l << 16) + 0x89ab;
217    l = (l << 16) + 0xcdef;
218    sprintf (buf, "0x%016llx", l);
219    return (strcmp ("0x0123456789abcdef", buf));]])],
220				gdb_cv_printf_has_long_long=yes,
221				gdb_cv_printf_has_long_long=no,
222				gdb_cv_printf_has_long_long=no)])
223  if test "$gdb_cv_printf_has_long_long" = yes; then
224    AC_DEFINE(PRINTF_HAS_LONG_LONG, 1,
225	      [Define to 1 if the "%ll" format works to print long longs.])
226  fi
227
228  BFD_SYS_PROCFS_H
229  if test "$ac_cv_header_sys_procfs_h" = yes; then
230    BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
231    BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)
232    BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
233    BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
234    BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t)
235    BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
236    BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
237    BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
238  fi
239
240  dnl xxhash support
241  # Check for xxhash
242  AC_ARG_WITH(xxhash,
243    AS_HELP_STRING([--with-xxhash], [use libxxhash for hashing (faster) (auto/yes/no)]),
244    [], [with_xxhash=auto])
245
246  if test "x$with_xxhash" != "xno"; then
247    AC_LIB_HAVE_LINKFLAGS([xxhash], [],
248			  [#include <xxhash.h>],
249			  [XXH32("foo", 3, 0);
250			  ])
251    if test "$HAVE_LIBXXHASH" != yes; then
252      if test "$with_xxhash" = yes; then
253	AC_MSG_ERROR([xxhash is missing or unusable])
254      fi
255    fi
256    if test "x$with_xxhash" = "xauto"; then
257      with_xxhash="$HAVE_LIBXXHASH"
258    fi
259  fi
260
261  AC_MSG_CHECKING([whether to use xxhash])
262  AC_MSG_RESULT([$with_xxhash])
263])
264
265dnl Check that the provided value ($1) is either "yes" or "no".  If not,
266dnl emit an error message mentionning the configure option $2, and abort
267dnl the script.
268AC_DEFUN([GDB_CHECK_YES_NO_VAL],
269	 [
270	   case $1 in
271	     yes | no)
272	       ;;
273	     *)
274	       AC_MSG_ERROR([bad value $1 for $2])
275	       ;;
276	   esac
277	  ])
278
279dnl Check that the provided value ($1) is either "yes", "no" or "auto".  If not,
280dnl emit an error message mentionning the configure option $2, and abort
281dnl the script.
282AC_DEFUN([GDB_CHECK_YES_NO_AUTO_VAL],
283	 [
284	   case $1 in
285	     yes | no | auto)
286	       ;;
287	     *)
288	       AC_MSG_ERROR([bad value $1 for $2])
289	       ;;
290	   esac
291	  ])
292