aclocal.m4 revision 284778
1# generated automatically by aclocal 1.15 -*- Autoconf -*- 2 3# Copyright (C) 1996-2014 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($@)])]) 15m4_ifndef([AC_AUTOCONF_VERSION], 16 [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl 17m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],, 18[m4_warning([this file was generated for autoconf 2.69. 19You have another version of autoconf. It may work, but is not guaranteed to. 20If you have problems, you may need to regenerate the build system entirely. 21To do so, use the procedure documented by the package, typically 'autoreconf'.])]) 22 23# visibility.m4 serial 5 (gettext-0.18.2) 24dnl Copyright (C) 2005, 2008, 2010-2014 Free Software Foundation, Inc. 25dnl This file is free software; the Free Software Foundation 26dnl gives unlimited permission to copy and/or distribute it, 27dnl with or without modifications, as long as this notice is preserved. 28 29dnl From Bruno Haible. 30 31dnl Tests whether the compiler supports the command-line option 32dnl -fvisibility=hidden and the function and variable attributes 33dnl __attribute__((__visibility__("hidden"))) and 34dnl __attribute__((__visibility__("default"))). 35dnl Does *not* test for __visibility__("protected") - which has tricky 36dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on 37dnl Mac OS X. 38dnl Does *not* test for __visibility__("internal") - which has processor 39dnl dependent semantics. 40dnl Does *not* test for #pragma GCC visibility push(hidden) - which is 41dnl "really only recommended for legacy code". 42dnl Set the variable CFLAG_VISIBILITY. 43dnl Defines and sets the variable HAVE_VISIBILITY. 44 45AC_DEFUN([gl_VISIBILITY], 46[ 47 AC_REQUIRE([AC_PROG_CC]) 48 CFLAG_VISIBILITY= 49 HAVE_VISIBILITY=0 50 if test -n "$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) 2002-2014 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='1.15' 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 1141 # below are definitely unexpected, so allow the users to see them 1142 # (that is, avoid stderr redirection). 1143 am_uid=`id -u || echo unknown` 1144 am_gid=`id -g || echo unknown` 1145 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) 1146 if test $am_uid -le $am_max_uid; then 1147 AC_MSG_RESULT([yes]) 1148 else 1149 AC_MSG_RESULT([no]) 1150 _am_tools=none 1151 fi 1152 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) 1153 if test $am_gid -le $am_max_gid; then 1154 AC_MSG_RESULT([yes]) 1155 else 1156 AC_MSG_RESULT([no]) 1157 _am_tools=none 1158 fi], 1159 1160 [pax], 1161 [], 1162 1163 [m4_fatal([Unknown tar format])]) 1164 1165 AC_MSG_CHECKING([how to create a $1 tar archive]) 1166 1167 # Go ahead even if we have the value already cached. We do so because we 1168 # need to set the values for the 'am__tar' and 'am__untar' variables. 1169 _am_tools=${am_cv_prog_tar_$1-$_am_tools} 1170 1171 for _am_tool in $_am_tools; do 1172 case $_am_tool in 1173 gnutar) 1174 for _am_tar in tar gnutar gtar; do 1175 AM_RUN_LOG([$_am_tar --version]) && break 1176 done 1177 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 1178 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 1179 am__untar="$_am_tar -xf -" 1180 ;; 1181 plaintar) 1182 # Must skip GNU tar: if it does not support --format= it doesn't create 1183 # ustar tarball either. 1184 (tar --version) >/dev/null 2>&1 && continue 1185 am__tar='tar chf - "$$tardir"' 1186 am__tar_='tar chf - "$tardir"' 1187 am__untar='tar xf -' 1188 ;; 1189 pax) 1190 am__tar='pax -L -x $1 -w "$$tardir"' 1191 am__tar_='pax -L -x $1 -w "$tardir"' 1192 am__untar='pax -r' 1193 ;; 1194 cpio) 1195 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 1196 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 1197 am__untar='cpio -i -H $1 -d' 1198 ;; 1199 none) 1200 am__tar=false 1201 am__tar_=false 1202 am__untar=false 1203 ;; 1204 esac 1205 1206 # If the value was cached, stop now. We just wanted to have am__tar 1207 # and am__untar set. 1208 test -n "${am_cv_prog_tar_$1}" && break 1209 1210 # tar/untar a dummy directory, and stop if the command works. 1211 rm -rf conftest.dir 1212 mkdir conftest.dir 1213 echo GrepMe > conftest.dir/file 1214 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) 1215 rm -rf conftest.dir 1216 if test -s conftest.tar; then 1217 AM_RUN_LOG([$am__untar <conftest.tar]) 1218 AM_RUN_LOG([cat conftest.dir/file]) 1219 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break 1220 fi 1221 done 1222 rm -rf conftest.dir 1223 1224 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) 1225 AC_MSG_RESULT([$am_cv_prog_tar_$1])]) 1226 1227AC_SUBST([am__tar]) 1228AC_SUBST([am__untar]) 1229]) # _AM_PROG_TAR 1230 1231m4_include([m4/libtool.m4]) 1232m4_include([m4/ltoptions.m4]) 1233m4_include([m4/ltsugar.m4]) 1234m4_include([m4/ltversion.m4]) 1235m4_include([m4/lt~obsolete.m4]) 1236m4_include([acinclude.m4]) 1237