1dnl Autoconf configure snippets for common. 2dnl Copyright (C) 1995-2020 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_VFORK 54 AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 poll socketpair sigaction \ 55 ptrace64 sbrk setns sigaltstack sigprocmask \ 56 setpgid setpgrp getrusage getauxval]) 57 58 dnl Check if we can disable the virtual address space randomization. 59 dnl The functionality of setarch -R. 60 AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>]) 61 define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [ 62 # if !HAVE_DECL_ADDR_NO_RANDOMIZE 63 # define ADDR_NO_RANDOMIZE 0x0040000 64 # endif 65 /* Test the flag could be set and stays set. */ 66 personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE); 67 if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE)) 68 return 1])]) 69 AC_RUN_IFELSE([PERSONALITY_TEST], 70 [have_personality=true], 71 [have_personality=false], 72 [AC_LINK_IFELSE([PERSONALITY_TEST], 73 [have_personality=true], 74 [have_personality=false])]) 75 if $have_personality 76 then 77 AC_DEFINE([HAVE_PERSONALITY], 1, 78 [Define if you support the personality syscall.]) 79 fi 80 81 AC_CHECK_DECLS([strstr]) 82 83 # ----------------------- # 84 # Checks for structures. # 85 # ----------------------- # 86 87 AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize]) 88 89 AC_SEARCH_LIBS(kinfo_getfile, util util-freebsd, 90 [AC_DEFINE(HAVE_KINFO_GETFILE, 1, 91 [Define to 1 if your system has the kinfo_getfile function. ])]) 92 93 # Check for std::thread. This does not work on some platforms, like 94 # mingw and DJGPP. 95 AC_LANG_PUSH([C++]) 96 AX_PTHREAD([threads=yes], [threads=no]) 97 if test "$threads" = "yes"; then 98 save_LIBS="$LIBS" 99 LIBS="$PTHREAD_LIBS $LIBS" 100 save_CXXFLAGS="$CXXFLAGS" 101 CXXFLAGS="$PTHREAD_CFLAGS $save_CXXFLAGS" 102 AC_CACHE_CHECK([for std::thread], 103 gdb_cv_cxx_std_thread, 104 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( 105 [[#include <thread> 106 void callback() { }]], 107 [[std::thread t(callback);]])], 108 gdb_cv_cxx_std_thread=yes, 109 gdb_cv_cxx_std_thread=no)]) 110 111 # This check must be here, while LIBS includes any necessary 112 # threading library. 113 AC_CHECK_FUNCS([pthread_sigmask pthread_setname_np]) 114 115 LIBS="$save_LIBS" 116 CXXFLAGS="$save_CXXFLAGS" 117 fi 118 if test "$gdb_cv_cxx_std_thread" = "yes"; then 119 AC_DEFINE(CXX_STD_THREAD, 1, 120 [Define to 1 if std::thread works.]) 121 fi 122 AC_LANG_POP 123 124 dnl Check if sigsetjmp is available. Using AC_CHECK_FUNCS won't 125 dnl do since sigsetjmp might only be defined as a macro. 126 AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp, 127 [AC_TRY_COMPILE([ 128 #include <setjmp.h> 129 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);], 130 gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)]) 131 if test "$gdb_cv_func_sigsetjmp" = "yes"; then 132 AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ]) 133 fi 134 135 AC_ARG_WITH(intel_pt, 136 AS_HELP_STRING([--with-intel-pt], [include Intel Processor Trace support (auto/yes/no)]), 137 [], [with_intel_pt=auto]) 138 AC_MSG_CHECKING([whether to use intel pt]) 139 AC_MSG_RESULT([$with_intel_pt]) 140 141 if test "${with_intel_pt}" = no; then 142 AC_MSG_WARN([Intel Processor Trace support disabled; some features may be unavailable.]) 143 HAVE_LIBIPT=no 144 else 145 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[ 146 #include <linux/perf_event.h> 147 #ifndef PERF_ATTR_SIZE_VER5 148 # error 149 #endif 150 ]])], [perf_event=yes], [perf_event=no]) 151 if test "$perf_event" != yes; then 152 if test "$with_intel_pt" = yes; then 153 AC_MSG_ERROR([linux/perf_event.h missing or too old]) 154 else 155 AC_MSG_WARN([linux/perf_event.h missing or too old; some features may be unavailable.]) 156 fi 157 fi 158 159 AC_LIB_HAVE_LINKFLAGS([ipt], [], [#include "intel-pt.h"], [pt_insn_alloc_decoder (0);]) 160 if test "$HAVE_LIBIPT" != yes; then 161 if test "$with_intel_pt" = yes; then 162 AC_MSG_ERROR([libipt is missing or unusable]) 163 else 164 AC_MSG_WARN([libipt is missing or unusable; some features may be unavailable.]) 165 fi 166 else 167 save_LIBS=$LIBS 168 LIBS="$LIBS $LIBIPT" 169 AC_CHECK_FUNCS(pt_insn_event) 170 AC_CHECK_MEMBERS([struct pt_insn.enabled, struct pt_insn.resynced], [], [], 171 [#include <intel-pt.h>]) 172 LIBS=$save_LIBS 173 fi 174 fi 175 176 BFD_SYS_PROCFS_H 177 if test "$ac_cv_header_sys_procfs_h" = yes; then 178 BFD_HAVE_SYS_PROCFS_TYPE(gregset_t) 179 BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t) 180 BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t) 181 BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t) 182 BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t) 183 BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t) 184 BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t) 185 BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t) 186 fi 187]) 188