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Diffstat (limited to 'm4m/gp-check-shell-environment.m4')
| -rw-r--r-- | m4m/gp-check-shell-environment.m4 | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/m4m/gp-check-shell-environment.m4 b/m4m/gp-check-shell-environment.m4 new file mode 100644 index 0000000..b9850e7 --- /dev/null +++ b/m4m/gp-check-shell-environment.m4 @@ -0,0 +1,48 @@ +dnl @synopsis GP_CHECK_SHELL_ENVIRONMENT([SHOW-LOCALE-VARS]) +dnl +dnl Check that the shell environment is sane. +dnl +dnl If SHOW-LOCALE-VARS is set to [true], print all LC_* and LANG* +dnl variables at configure time. (WARNING: This is not portable!) +dnl +dnl +AC_DEFUN([GP_CHECK_SHELL_ENVIRONMENT], +[ +# make sure "cd" doesn't print anything on stdout +if test x"${CDPATH+set}" = xset +then + CDPATH=: + export CDPATH +fi + +# make sure $() command substitution works +AC_MSG_CHECKING([for POSIX sh \$() command substitution]) +if test "x$(pwd)" = "x`pwd`" && test "y$(echo "foobar")" = "y`echo foobar`" # '''' +then + AC_MSG_RESULT([yes]) +else + AC_MSG_RESULT([no]) + uname=`uname 2>&1` # '' + uname_a=`uname -a 2>&1` # '' + AC_MSG_ERROR([ + +* POSIX sh \$() command substition does not work with this shell. +* +* You are running a very rare species of shell. Please report this +* sighting to <${PACKAGE_BUGREPORT}>: +* SHELL=${SHELL} +* uname=${uname} +* uname-a=${uname_a} +* Please also include your OS and version. +* +* Run this configure script using a better (i.e. POSIX compliant) shell. +]) +fi +dnl +m4_if([$1],[true],[dnl +printenv | grep -E '^(LC_|LANG)' +])dnl + +dnl +])dnl +dnl |