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111
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1 # configure.ac -- Backtrace configure script.
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2 # Copyright (C) 2012-2017 Free Software Foundation, Inc.
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3
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4 # Redistribution and use in source and binary forms, with or without
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5 # modification, are permitted provided that the following conditions are
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6 # met:
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7
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8 # (1) Redistributions of source code must retain the above copyright
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9 # notice, this list of conditions and the following disclaimer.
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10
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11 # (2) Redistributions in binary form must reproduce the above copyright
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12 # notice, this list of conditions and the following disclaimer in
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13 # the documentation and/or other materials provided with the
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14 # distribution.
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15
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16 # (3) The name of the author may not be used to
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17 # endorse or promote products derived from this software without
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18 # specific prior written permission.
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19
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20 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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21 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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22 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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23 # DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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24 # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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25 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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26 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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27 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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28 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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29 # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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30 # POSSIBILITY OF SUCH DAMAGE.
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31
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32 AC_PREREQ(2.64)
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33 AC_INIT(package-unused, version-unused,, libbacktrace)
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34 AC_CONFIG_SRCDIR(backtrace.h)
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35 AC_CONFIG_HEADER(config.h)
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36
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37 if test -n "${with_target_subdir}"; then
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38 AM_ENABLE_MULTILIB(, ..)
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39 fi
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40
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41 AC_CANONICAL_SYSTEM
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42 target_alias=${target_alias-$host_alias}
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43
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44 AC_USE_SYSTEM_EXTENSIONS
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45
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46 libtool_VERSION=1:0:0
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47 AC_SUBST(libtool_VERSION)
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48
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49 # 1.11.1: Require that version of automake.
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50 # foreign: Don't require README, INSTALL, NEWS, etc.
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51 # no-define: Don't define PACKAGE and VERSION.
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52 # no-dependencies: Don't generate automatic dependencies.
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53 # (because it breaks when using bootstrap-lean, since some of the
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54 # headers are gone at "make install" time).
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55 # -Wall: Issue all automake warnings.
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56 # -Wno-portability: Don't warn about constructs supported by GNU make.
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57 # (because GCC requires GNU make anyhow).
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58 AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies -Wall -Wno-portability])
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59
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60 AM_MAINTAINER_MODE
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61
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62 AC_ARG_WITH(target-subdir,
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63 [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
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64
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65 # We must force CC to /not/ be precious variables; otherwise
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66 # the wrong, non-multilib-adjusted value will be used in multilibs.
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67 # As a side effect, we have to subst CFLAGS ourselves.
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68 m4_rename([_AC_ARG_VAR_PRECIOUS],[backtrace_PRECIOUS])
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69 m4_define([_AC_ARG_VAR_PRECIOUS],[])
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70 AC_PROG_CC
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71 m4_rename_force([backtrace_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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72
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73 AC_SUBST(CFLAGS)
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74
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75 AC_PROG_RANLIB
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76
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77 AC_PROG_AWK
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78 case "$AWK" in
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79 "") AC_MSG_ERROR([can't build without awk]) ;;
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80 esac
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81
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82 LT_INIT
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83 AM_PROG_LIBTOOL
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84
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85 AC_SYS_LARGEFILE
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86
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87 backtrace_supported=yes
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88
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89 if test -n "${with_target_subdir}"; then
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90 # We are compiling a GCC library. We can assume that the unwind
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91 # library exists.
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92 BACKTRACE_FILE="backtrace.lo simple.lo"
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93 else
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94 AC_CHECK_HEADER([unwind.h],
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95 [AC_CHECK_FUNC([_Unwind_Backtrace],
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96 [BACKTRACE_FILE="backtrace.lo simple.lo"],
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97 [BACKTRACE_FILE="nounwind.lo"
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98 backtrace_supported=no])],
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99 [BACKTRACE_FILE="nounwind.lo"
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100 backtrace_supported=no])
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101 fi
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102 AC_SUBST(BACKTRACE_FILE)
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103
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104 EXTRA_FLAGS=
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105 if test -n "${with_target_subdir}"; then
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106 EXTRA_FLAGS="-funwind-tables -frandom-seed=\$@"
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107 else
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108 AC_CACHE_CHECK([for -funwind-tables option],
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109 [libbacktrace_cv_c_unwind_tables],
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110 [CFLAGS_hold="$CFLAGS"
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111 CFLAGS="$CFLAGS -funwind-tables"
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112 AC_COMPILE_IFELSE(
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113 [AC_LANG_PROGRAM([static int f() { return 0; }], [return f();])],
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114 [libbacktrace_cv_c_unwind_tables=yes],
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115 [libbacktrace_cv_c_unwind_tables=no])
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116 CFLAGS="$CFLAGS_hold"])
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117 if test "$libbacktrace_cv_c_unwind_tables" = "yes"; then
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118 EXTRA_FLAGS=-funwind-tables
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119 fi
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120 AC_CACHE_CHECK([for -frandom-seed=string option],
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121 [libbacktrace_cv_c_random_seed_string],
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122 [CFLAGS_hold="$CFLAGS"
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123 CFLAGS="$CFLAGS -frandom-seed=conftest.lo"
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124 AC_COMPILE_IFELSE(
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125 [AC_LANG_PROGRAM([], [return 0;])],
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126 [libbacktrace_cv_c_random_seed_string=yes],
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127 [libbacktrace_cv_c_random_seed_string=no])
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128 CFLAGS="$CFLAGS_hold"])
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129 if test "$libbacktrace_cv_c_random_seed_string" = "yes"; then
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130 EXTRA_FLAGS="$EXTRA_FLAGS -frandom-seed=\$@"
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131 fi
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132 fi
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133 AC_SUBST(EXTRA_FLAGS)
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134
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135 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
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136 -Wmissing-prototypes -Wold-style-definition \
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137 -Wmissing-format-attribute -Wcast-qual],
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138 [WARN_FLAGS])
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139
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140 if test -n "${with_target_subdir}"; then
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141 WARN_FLAGS="$WARN_FLAGS -Werror"
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142 fi
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143
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144 AC_SUBST(WARN_FLAGS)
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145
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146 if test -n "${with_target_subdir}"; then
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147 GCC_CHECK_UNWIND_GETIPINFO
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148 else
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149 ac_save_CFFLAGS="$CFLAGS"
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150 CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
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151 AC_MSG_CHECKING([for _Unwind_GetIPInfo])
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152 AC_LINK_IFELSE(
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153 [AC_LANG_PROGRAM(
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154 [#include "unwind.h"
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155 struct _Unwind_Context *context;
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156 int ip_before_insn = 0;],
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157 [return _Unwind_GetIPInfo (context, &ip_before_insn);])],
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158 [have_unwind_getipinfo=yes], [have_unwind_getipinfo=no])
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159 CFLAGS="$ac_save_CFLAGS"
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160 AC_MSG_RESULT([$have_unwind_getipinfo])
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161 if test "$have_unwind_getipinfo" = "yes"; then
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162 AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
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163 fi
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164 fi
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165
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166 # Enable --enable-host-shared.
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167 AC_ARG_ENABLE(host-shared,
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168 [AS_HELP_STRING([--enable-host-shared],
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169 [build host code as shared libraries])],
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170 [PIC_FLAG=-fPIC], [PIC_FLAG=])
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171 AC_SUBST(PIC_FLAG)
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172
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173 # Test for __sync support.
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174 AC_CACHE_CHECK([__sync extensions],
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175 [libbacktrace_cv_sys_sync],
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176 [if test -n "${with_target_subdir}"; then
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177 case "${host}" in
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178 hppa*-*-hpux*) libbacktrace_cv_sys_sync=no ;;
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179 *) libbacktrace_cv_sys_sync=yes ;;
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180 esac
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181 else
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182 AC_LINK_IFELSE(
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183 [AC_LANG_PROGRAM([int i;],
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184 [__sync_bool_compare_and_swap (&i, i, i);
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185 __sync_lock_test_and_set (&i, 1);
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186 __sync_lock_release (&i);])],
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187 [libbacktrace_cv_sys_sync=yes],
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188 [libbacktrace_cv_sys_sync=no])
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189 fi])
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190 BACKTRACE_SUPPORTS_THREADS=0
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191 if test "$libbacktrace_cv_sys_sync" = "yes"; then
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192 BACKTRACE_SUPPORTS_THREADS=1
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193 AC_DEFINE([HAVE_SYNC_FUNCTIONS], 1,
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194 [Define to 1 if you have the __sync functions])
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195 fi
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196 AC_SUBST(BACKTRACE_SUPPORTS_THREADS)
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197
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198 # Test for __atomic support.
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199 AC_CACHE_CHECK([__atomic extensions],
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200 [libbacktrace_cv_sys_atomic],
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201 [if test -n "${with_target_subdir}"; then
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202 libbacktrace_cv_sys_atomic=yes
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203 else
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204 AC_LINK_IFELSE(
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205 [AC_LANG_PROGRAM([int i;],
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206 [__atomic_load_n (&i, __ATOMIC_ACQUIRE);
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207 __atomic_store_n (&i, 1, __ATOMIC_RELEASE);])],
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208 [libbacktrace_cv_sys_atomic=yes],
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209 [libbacktrace_cv_sys_atomic=no])
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210 fi])
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211 if test "$libbacktrace_cv_sys_atomic" = "yes"; then
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212 AC_DEFINE([HAVE_ATOMIC_FUNCTIONS], 1,
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213 [Define to 1 if you have the __atomic functions])
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214 fi
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215
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216 # The library needs to be able to read the executable itself. Compile
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217 # a file to determine the executable format. The awk script
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218 # filetype.awk prints out the file type.
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219 AC_CACHE_CHECK([output filetype],
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220 [libbacktrace_cv_sys_filetype],
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221 [filetype=
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222 AC_COMPILE_IFELSE(
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223 [AC_LANG_PROGRAM([int i;], [int j;])],
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224 [filetype=`${AWK} -f $srcdir/filetype.awk conftest.$ac_objext`],
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225 [AC_MSG_FAILURE([compiler failed])])
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226 libbacktrace_cv_sys_filetype=$filetype])
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227
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228 # Match the file type to decide what files to compile.
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229 FORMAT_FILE=
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230 backtrace_supports_data=yes
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231 case "$libbacktrace_cv_sys_filetype" in
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232 elf*) FORMAT_FILE="elf.lo" ;;
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233 pecoff) FORMAT_FILE="pecoff.lo"
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234 backtrace_supports_data=no
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235 ;;
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236 xcoff*) FORMAT_FILE="xcoff.lo"
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237 backtrace_supports_data=no
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238 ;;
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239 *) AC_MSG_WARN([could not determine output file type])
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240 FORMAT_FILE="unknown.lo"
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241 backtrace_supported=no
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242 ;;
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243 esac
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244 AC_SUBST(FORMAT_FILE)
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245
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246 # ELF defines.
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247 elfsize=
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248 case "$libbacktrace_cv_sys_filetype" in
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249 elf32) elfsize=32 ;;
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250 elf64) elfsize=64 ;;
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251 *) elfsize=unused
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252 esac
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253 AC_DEFINE_UNQUOTED([BACKTRACE_ELF_SIZE], [$elfsize], [ELF size: 32 or 64])
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254
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255 # XCOFF defines.
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256 xcoffsize=
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257 case "$libbacktrace_cv_sys_filetype" in
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258 xcoff32) xcoffsize=32 ;;
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259 xcoff64) xcoffsize=64 ;;
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260 *) xcoffsize=unused
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261 esac
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262 AC_DEFINE_UNQUOTED([BACKTRACE_XCOFF_SIZE], [$xcoffsize], [XCOFF size: 32 or 64])
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263
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264 BACKTRACE_SUPPORTED=0
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265 if test "$backtrace_supported" = "yes"; then
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266 BACKTRACE_SUPPORTED=1
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267 fi
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268 AC_SUBST(BACKTRACE_SUPPORTED)
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269
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270 BACKTRACE_SUPPORTS_DATA=0
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271 if test "$backtrace_supports_data" = "yes"; then
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272 BACKTRACE_SUPPORTS_DATA=1
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273 fi
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274 AC_SUBST(BACKTRACE_SUPPORTS_DATA)
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275
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276 GCC_HEADER_STDINT(gstdint.h)
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277
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278 AC_CHECK_HEADERS(sys/mman.h)
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279 if test "$ac_cv_header_sys_mman_h" = "no"; then
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280 have_mmap=no
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281 else
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282 if test -n "${with_target_subdir}"; then
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283 # When built as a GCC target library, we can't do a link test. We
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284 # simply assume that if we have mman.h, we have mmap.
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285 have_mmap=yes
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286 case "${host}" in
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287 spu-*-*|*-*-msdosdjgpp)
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288 # The SPU does not have mmap, but it has a sys/mman.h header file
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289 # containing "mmap_eaddr" and the mmap flags, confusing the test.
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290 # DJGPP also has sys/man.h, but no mmap
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291 have_mmap=no ;;
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292 esac
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293 else
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294 AC_CHECK_FUNC(mmap, [have_mmap=yes], [have_mmap=no])
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295 fi
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296 fi
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297 if test "$have_mmap" = "no"; then
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298 VIEW_FILE=read.lo
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299 ALLOC_FILE=alloc.lo
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300 else
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301 VIEW_FILE=mmapio.lo
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302 AC_PREPROC_IFELSE([
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303 #include <sys/mman.h>
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304 #if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON)
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305 #error no MAP_ANONYMOUS
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306 #endif
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307 ], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo])
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308 fi
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309 AC_SUBST(VIEW_FILE)
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310 AC_SUBST(ALLOC_FILE)
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311
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312 BACKTRACE_USES_MALLOC=0
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313 if test "$ALLOC_FILE" = "alloc.lo"; then
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314 BACKTRACE_USES_MALLOC=1
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315 fi
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316 AC_SUBST(BACKTRACE_USES_MALLOC)
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317
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318 # Check for dl_iterate_phdr.
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319 AC_CHECK_HEADERS(link.h)
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320 if test "$ac_cv_header_link_h" = "no"; then
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321 have_dl_iterate_phdr=no
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322 else
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323 if test -n "${with_target_subdir}"; then
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324 # When built as a GCC target library, we can't do a link test.
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325 AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes],
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326 [have_dl_iterate_phdr=no])
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327 case "${host}" in
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328 *-*-solaris2.10*)
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329 # Avoid dl_iterate_phdr on Solaris 10, where it is in the
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330 # header file but is only in -ldl.
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331 have_dl_iterate_phdr=no ;;
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332 esac
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333 else
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334 AC_CHECK_FUNC([dl_iterate_phdr], [have_dl_iterate_phdr=yes],
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335 [have_dl_iterate_phdr=no])
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336 fi
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337 fi
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338 if test "$have_dl_iterate_phdr" = "yes"; then
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339 AC_DEFINE(HAVE_DL_ITERATE_PHDR, 1, [Define if dl_iterate_phdr is available.])
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340 fi
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341
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342 # Check for loadquery.
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343 AC_CHECK_HEADERS(sys/ldr.h)
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344 if test "$ac_cv_header_sys_ldr_h" = "no"; then
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345 have_loadquery=no
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346 else
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347 if test -n "${with_target_subdir}"; then
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348 # When built as a GCC target library, we can't do a link test.
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349 AC_EGREP_HEADER([loadquery], [sys/ldr.h], [have_loadquery=yes],
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350 [have_loadquery=no])
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351 else
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352 AC_CHECK_FUNC([loadquery], [have_loadquery=yes],
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353 [have_loadquery=no])
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354 fi
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355 fi
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356 if test "$have_loadquery" = "yes"; then
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357 AC_DEFINE(HAVE_LOADQUERY, 1, [Define if AIX loadquery is available.])
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358 fi
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359
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360 # Check for the fcntl function.
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361 if test -n "${with_target_subdir}"; then
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362 case "${host}" in
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363 *-*-mingw*) have_fcntl=no ;;
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364 spu-*-*) have_fcntl=no ;;
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365 *) have_fcntl=yes ;;
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366 esac
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367 else
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368 AC_CHECK_FUNC(fcntl, [have_fcntl=yes], [have_fcntl=no])
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369 fi
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370 if test "$have_fcntl" = "yes"; then
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371 AC_DEFINE([HAVE_FCNTL], 1,
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372 [Define to 1 if you have the fcntl function])
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373 fi
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374
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375 AC_CHECK_DECLS(strnlen)
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376 AC_CHECK_FUNCS(lstat readlink)
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377
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378 # Check for getexecname function.
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379 if test -n "${with_target_subdir}"; then
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380 case "${host}" in
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381 *-*-solaris2*) have_getexecname=yes ;;
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382 *) have_getexecname=no ;;
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383 esac
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384 else
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385 AC_CHECK_FUNC(getexecname, [have_getexecname=yes], [have_getexecname=no])
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386 fi
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387 if test "$have_getexecname" = "yes"; then
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388 AC_DEFINE(HAVE_GETEXECNAME, 1, [Define if getexecname is available.])
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389 fi
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390
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391 # Check for the clock_gettime function.
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392 AC_CHECK_FUNCS(clock_gettime)
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393 clock_gettime_link=
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394 # At least for glibc, clock_gettime is in librt. But don't
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395 # pull that in if it still doesn't give us the function we want. This
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396 # test is copied from libgomp, and modified to not link in -lrt as
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397 # we're using this for test timing only.
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398 if test "$ac_cv_func_clock_gettime" = no; then
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399 AC_CHECK_LIB(rt, clock_gettime,
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400 [CLOCK_GETTIME_LINK=-lrt
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401 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
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402 [Define to 1 if you have the `clock_gettime' function.])])
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403 fi
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404 AC_SUBST(CLOCK_GETTIME_LINK)
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405
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406 dnl Test whether the compiler supports the -pthread option.
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407 AC_CACHE_CHECK([whether -pthread is supported],
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408 [libgo_cv_lib_pthread],
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409 [CFLAGS_hold=$CFLAGS
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410 CFLAGS="$CFLAGS -pthread"
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411 AC_COMPILE_IFELSE([[int i;]],
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412 [libgo_cv_lib_pthread=yes],
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413 [libgo_cv_lib_pthread=no])
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414 CFLAGS=$CFLAGS_hold])
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415 PTHREAD_CFLAGS=
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416 if test "$libgo_cv_lib_pthread" = yes; then
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417 PTHREAD_CFLAGS=-pthread
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418 fi
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419 AC_SUBST(PTHREAD_CFLAGS)
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420
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421 AM_CONDITIONAL(HAVE_PTHREAD, test "$libgo_cv_lib_pthread" = yes)
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422
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423 AC_CHECK_LIB([z], [compress], [])
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424 if test $ac_cv_lib_z_compress = "yes"; then
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425 AC_DEFINE(HAVE_ZLIB, 1, [Define if -lz is available.])
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426 fi
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427 AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_lib_z_compress" = yes)
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428
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429 dnl Test whether the linker supports the --compress_debug_sections option.
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430 AC_CACHE_CHECK([whether --compress-debug-sections is supported],
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431 [libgo_cv_ld_compress],
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432 [LDFLAGS_hold=$LDFLAGS
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433 LDFLAGS="$LDFLAGS -Wl,--compress-debug-sections=zlib-gnu"
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434 AC_LINK_IFELSE([AC_LANG_PROGRAM(,)],
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435 [libgo_cv_ld_compress=yes],
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436 [libgo_cv_ld_compress=no])
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437 LDFLAGS=$LDFLAGS_hold])
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438 AM_CONDITIONAL(HAVE_COMPRESSED_DEBUG, test "$libgo_cv_ld_compress" = yes)
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439
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440 AC_ARG_VAR(OBJCOPY, [location of objcopy])
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441 AC_CHECK_PROG(OBJCOPY, objcopy, objcopy,)
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442 AC_CACHE_CHECK([whether objcopy supports debuglink],
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443 [libbacktrace_cv_objcopy_debuglink],
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444 [if test -n "${with_target_subdir}"; then
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445 libbacktrace_cv_objcopy_debuglink=no
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446 elif ${OBJCOPY} --add-gnu-debuglink=x /bin/ls /tmp/ls$$; then
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447 rm -f /tmp/ls$$
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448 libbacktrace_cv_objcopy_debuglink=yes
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449 else
|
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450 libbacktrace_cv_objcopy_debuglink=no
|
|
|
451 fi])
|
|
|
452 AM_CONDITIONAL(HAVE_OBJCOPY_DEBUGLINK, test "$libbacktrace_cv_objcopy_debuglink" = yes)
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453
|
|
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454 AC_CACHE_CHECK([whether tests can run],
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|
455 [libbacktrace_cv_sys_native],
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|
|
456 [AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
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|
457 [libbacktrace_cv_sys_native=yes],
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|
|
458 [libbacktrace_cv_sys_native=no],
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|
|
459 [libbacktrace_cv_sys_native=no])])
|
|
|
460 AM_CONDITIONAL(NATIVE, test "$libbacktrace_cv_sys_native" = "yes")
|
|
|
461
|
|
|
462 if test "${multilib}" = "yes"; then
|
|
|
463 multilib_arg="--enable-multilib"
|
|
|
464 else
|
|
|
465 multilib_arg=
|
|
|
466 fi
|
|
|
467
|
|
|
468 AC_CONFIG_FILES(Makefile backtrace-supported.h)
|
|
|
469
|
|
|
470 # We need multilib support, but only if configuring for the target.
|
|
|
471 AC_CONFIG_COMMANDS([default],
|
|
|
472 [if test -n "$CONFIG_FILES"; then
|
|
|
473 if test -n "${with_target_subdir}"; then
|
|
|
474 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
|
|
|
475 # that multilib installs will end up installed in the correct place.
|
|
|
476 # The testsuite needs it for multilib-aware ABI baseline files.
|
|
|
477 # To work around this not being passed down from config-ml.in ->
|
|
|
478 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
|
|
|
479 # append it here. Only modify Makefiles that have just been created.
|
|
|
480 #
|
|
|
481 # Also, get rid of this simulated-VPATH thing that automake does.
|
|
|
482 cat > vpsed << \_EOF
|
|
|
483 s!`test -f '$<' || echo '$(srcdir)/'`!!
|
|
|
484 _EOF
|
|
|
485 for i in $SUBDIRS; do
|
|
|
486 case $CONFIG_FILES in
|
|
|
487 *${i}/Makefile*)
|
|
|
488 #echo "Adding MULTISUBDIR to $i/Makefile"
|
|
|
489 sed -f vpsed $i/Makefile > tmp
|
|
|
490 grep '^MULTISUBDIR =' Makefile >> tmp
|
|
|
491 mv tmp $i/Makefile
|
|
|
492 ;;
|
|
|
493 esac
|
|
|
494 done
|
|
|
495 rm vpsed
|
|
|
496 fi
|
|
|
497 fi
|
|
|
498 ],
|
|
|
499 [
|
|
|
500 # Variables needed in config.status (file generation) which aren't already
|
|
|
501 # passed by autoconf.
|
|
|
502 SUBDIRS="$SUBDIRS"
|
|
|
503 ])
|
|
|
504
|
|
|
505 AC_OUTPUT
|
