aclocal.m4 revision 277592
1# generated automatically by aclocal 1.14 -*- Autoconf -*- 2 3# Copyright (C) 1996-2013 Free Software Foundation, Inc. 4 5# This file is free software; the Free Software Foundation 6# gives unlimited permission to copy and/or distribute it, 7# with or without modifications, as long as this notice is preserved. 8 9# This program is distributed in the hope that it will be useful, 10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without 11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A 12# PARTICULAR PURPOSE. 13 14m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])]) 15m4_ifndef([AC_AUTOCONF_VERSION], 16 [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl 17m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],, 18[m4_warning([this file was generated for autoconf 2.69. 19You have another version of autoconf. It may work, but is not guaranteed to. 20If you have problems, you may need to regenerate the build system entirely. 21To do so, use the procedure documented by the package, typically 'autoreconf'.])]) 22 23# visibility.m4 serial 5 (gettext-0.18.2) 24dnl Copyright (C) 2005, 2008, 2010-2013 Free Software Foundation, Inc. 25dnl This file is free software; the Free Software Foundation 26dnl gives unlimited permission to copy and/or distribute it, 27dnl with or without modifications, as long as this notice is preserved. 28 29dnl From Bruno Haible. 30 31dnl Tests whether the compiler supports the command-line option 32dnl -fvisibility=hidden and the function and variable attributes 33dnl __attribute__((__visibility__("hidden"))) and 34dnl __attribute__((__visibility__("default"))). 35dnl Does *not* test for __visibility__("protected") - which has tricky 36dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on 37dnl Mac OS X. 38dnl Does *not* test for __visibility__("internal") - which has processor 39dnl dependent semantics. 40dnl Does *not* test for #pragma GCC visibility push(hidden) - which is 41dnl "really only recommended for legacy code". 42dnl Set the variable CFLAG_VISIBILITY. 43dnl Defines and sets the variable HAVE_VISIBILITY. 44 45AC_DEFUN([gl_VISIBILITY], 46[ 47 AC_REQUIRE([AC_PROG_CC]) 48 CFLAG_VISIBILITY= 49 HAVE_VISIBILITY=0 50 if test -n "$GCC"; then 51 dnl First, check whether -Werror can be added to the command line, or 52 dnl whether it leads to an error because of some other option that the 53 dnl user has put into $CC $CFLAGS $CPPFLAGS. 54 AC_MSG_CHECKING([whether the -Werror option is usable]) 55 AC_CACHE_VAL([gl_cv_cc_vis_werror], [ 56 gl_save_CFLAGS="$CFLAGS" 57 CFLAGS="$CFLAGS -Werror" 58 AC_COMPILE_IFELSE( 59 [AC_LANG_PROGRAM([[]], [[]])], 60 [gl_cv_cc_vis_werror=yes], 61 [gl_cv_cc_vis_werror=no]) 62 CFLAGS="$gl_save_CFLAGS"]) 63 AC_MSG_RESULT([$gl_cv_cc_vis_werror]) 64 dnl Now check whether visibility declarations are supported. 65 AC_MSG_CHECKING([for simple visibility declarations]) 66 AC_CACHE_VAL([gl_cv_cc_visibility], [ 67 gl_save_CFLAGS="$CFLAGS" 68 CFLAGS="$CFLAGS -fvisibility=hidden" 69 dnl We use the option -Werror and a function dummyfunc, because on some 70 dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning 71 dnl "visibility attribute not supported in this configuration; ignored" 72 dnl at the first function definition in every compilation unit, and we 73 dnl don't want to use the option in this case. 74 if test $gl_cv_cc_vis_werror = yes; then 75 CFLAGS="$CFLAGS -Werror" 76 fi 77 AC_COMPILE_IFELSE( 78 [AC_LANG_PROGRAM( 79 [[extern __attribute__((__visibility__("hidden"))) int hiddenvar; 80 extern __attribute__((__visibility__("default"))) int exportedvar; 81 extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void); 82 extern __attribute__((__visibility__("default"))) int exportedfunc (void); 83 void dummyfunc (void) {} 84 ]], 85 [[]])], 86 [gl_cv_cc_visibility=yes], 87 [gl_cv_cc_visibility=no]) 88 CFLAGS="$gl_save_CFLAGS"]) 89 AC_MSG_RESULT([$gl_cv_cc_visibility]) 90 if test $gl_cv_cc_visibility = yes; then 91 CFLAG_VISIBILITY="-fvisibility=hidden" 92 HAVE_VISIBILITY=1 93 fi 94 fi 95 AC_SUBST([CFLAG_VISIBILITY]) 96 AC_SUBST([HAVE_VISIBILITY]) 97 AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY], 98 [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.]) 99]) 100 101# Copyright (C) 2002-2013 Free Software Foundation, Inc. 102# 103# This file is free software; the Free Software Foundation 104# gives unlimited permission to copy and/or distribute it, 105# with or without modifications, as long as this notice is preserved. 106 107# AM_AUTOMAKE_VERSION(VERSION) 108# ---------------------------- 109# Automake X.Y traces this macro to ensure aclocal.m4 has been 110# generated from the m4 files accompanying Automake X.Y. 111# (This private macro should not be called outside this file.) 112AC_DEFUN([AM_AUTOMAKE_VERSION], 113[am__api_version='1.14' 114dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to 115dnl require some minimum version. 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Errors in the 'id' calls 1138 # below are definitely unexpected, so allow the users to see them 1139 # (that is, avoid stderr redirection). 1140 am_uid=`id -u || echo unknown` 1141 am_gid=`id -g || echo unknown` 1142 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) 1143 if test $am_uid -le $am_max_uid; then 1144 AC_MSG_RESULT([yes]) 1145 else 1146 AC_MSG_RESULT([no]) 1147 _am_tools=none 1148 fi 1149 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) 1150 if test $am_gid -le $am_max_gid; then 1151 AC_MSG_RESULT([yes]) 1152 else 1153 AC_MSG_RESULT([no]) 1154 _am_tools=none 1155 fi], 1156 1157 [pax], 1158 [], 1159 1160 [m4_fatal([Unknown tar format])]) 1161 1162 AC_MSG_CHECKING([how to create a $1 tar archive]) 1163 1164 # Go ahead even if we have the value already cached. We do so because we 1165 # need to set the values for the 'am__tar' and 'am__untar' variables. 1166 _am_tools=${am_cv_prog_tar_$1-$_am_tools} 1167 1168 for _am_tool in $_am_tools; do 1169 case $_am_tool in 1170 gnutar) 1171 for _am_tar in tar gnutar gtar; do 1172 AM_RUN_LOG([$_am_tar --version]) && break 1173 done 1174 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 1175 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 1176 am__untar="$_am_tar -xf -" 1177 ;; 1178 plaintar) 1179 # Must skip GNU tar: if it does not support --format= it doesn't create 1180 # ustar tarball either. 1181 (tar --version) >/dev/null 2>&1 && continue 1182 am__tar='tar chf - "$$tardir"' 1183 am__tar_='tar chf - "$tardir"' 1184 am__untar='tar xf -' 1185 ;; 1186 pax) 1187 am__tar='pax -L -x $1 -w "$$tardir"' 1188 am__tar_='pax -L -x $1 -w "$tardir"' 1189 am__untar='pax -r' 1190 ;; 1191 cpio) 1192 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 1193 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 1194 am__untar='cpio -i -H $1 -d' 1195 ;; 1196 none) 1197 am__tar=false 1198 am__tar_=false 1199 am__untar=false 1200 ;; 1201 esac 1202 1203 # If the value was cached, stop now. We just wanted to have am__tar 1204 # and am__untar set. 1205 test -n "${am_cv_prog_tar_$1}" && break 1206 1207 # tar/untar a dummy directory, and stop if the command works. 1208 rm -rf conftest.dir 1209 mkdir conftest.dir 1210 echo GrepMe > conftest.dir/file 1211 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) 1212 rm -rf conftest.dir 1213 if test -s conftest.tar; then 1214 AM_RUN_LOG([$am__untar <conftest.tar]) 1215 AM_RUN_LOG([cat conftest.dir/file]) 1216 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break 1217 fi 1218 done 1219 rm -rf conftest.dir 1220 1221 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) 1222 AC_MSG_RESULT([$am_cv_prog_tar_$1])]) 1223 1224AC_SUBST([am__tar]) 1225AC_SUBST([am__untar]) 1226]) # _AM_PROG_TAR 1227 1228m4_include([m4/libtool.m4]) 1229m4_include([m4/ltoptions.m4]) 1230m4_include([m4/ltsugar.m4]) 1231m4_include([m4/ltversion.m4]) 1232m4_include([m4/lt~obsolete.m4]) 1233m4_include([acinclude.m4]) 1234