1dnl @synopsis GP_CHECK_SHELL_ENVIRONMENT([SHOW-LOCALE-VARS]) 2dnl 3dnl Check that the shell environment is sane. 4dnl 5dnl If SHOW-LOCALE-VARS is set to [true], print all LC_* and LANG* 6dnl variables at configure time. (WARNING: This is not portable!) 7dnl 8dnl Copyright (C) 2005-2021 Hans Ulrich Niedermann <gp@n-dimensional.de> 9dnl SPDX-License-Identifier: LGPL-2.0-or-later 10dnl 11AC_DEFUN([GP_CHECK_SHELL_ENVIRONMENT], 12[ 13# make sure "cd" doesn't print anything on stdout 14if test x"${CDPATH+set}" = xset 15then 16 CDPATH=: 17 export CDPATH 18fi 19 20# make sure $() command substitution works 21AC_MSG_CHECKING([for POSIX sh \$() command substitution]) 22if test "x$(pwd)" = "x`pwd`" && test "y$(echo "foobar")" = "y`echo foobar`" # '''' 23then 24 AC_MSG_RESULT([yes]) 25else 26 AC_MSG_RESULT([no]) 27 uname=`uname 2>&1` # '' 28 uname_a=`uname -a 2>&1` # '' 29 AC_MSG_ERROR([ 30 31* POSIX sh \$() command substitution does not work with this shell. 32* 33* You are running a very rare species of shell. Please report this 34* sighting to <${PACKAGE_BUGREPORT}>: 35* SHELL=${SHELL} 36* uname=${uname} 37* uname-a=${uname_a} 38* Please also include your OS and version. 39* 40* Run this configure script using a better (i.e. POSIX compliant) shell. 41]) 42fi 43dnl 44m4_if([$1],[true],[dnl 45printenv | grep -E '^(LC_|LANG)' 46])dnl 47 48dnl 49])dnl 50dnl 51