zz40-xc-ovr.m4: internals overhauling
- Update comments - Execute commands in subshells - Faster path separator check - Fix missing 'test' command - Rename private macros - Minimize AC_REQUIRE usage
This commit is contained in:
Yang Tse
parent
6a55f25f67
commit
b1826d81fb
@ -28,46 +28,66 @@ dnl subdirectory. This allows that macro (re)definitions from this
|
||||
dnl file may override those provided in other files.
|
||||
|
||||
|
||||
dnl _XC_CONFIGURE_PREAMBLE_COMMENT
|
||||
dnl _XC_CFG_PRE_PREAMBLE
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
|
||||
AC_DEFUN([_XC_CONFIGURE_PREAMBLE_COMMENT],
|
||||
AC_DEFUN([_XC_CFG_PRE_PREAMBLE],
|
||||
[
|
||||
## ---------------------------- ##
|
||||
## XC_CONFIGURE_PREAMBLE rev: 1 ##
|
||||
## ---------------------------- ##
|
||||
])
|
||||
|
||||
xc_configure_preamble_prev_IFS=$IFS
|
||||
|
||||
dnl _XC_CONFIGURE_PREAMBLE_INIT
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
|
||||
AC_DEFUN([_XC_CONFIGURE_PREAMBLE_INIT],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_COMMENT])dnl
|
||||
xc_msg_warn='configure: WARNING:'
|
||||
xc_msg_abrt='Can not continue.'
|
||||
xc_msg_err='configure: error:'
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CHECK_COMMAND_TEST
|
||||
dnl _XC_CFG_PRE_BASIC_CHK_CMD_ECHO
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Check that 'test' command is available, else abort.
|
||||
dnl Emits shell code that verifies that 'echo' command
|
||||
dnl is available, otherwise aborts execution.
|
||||
|
||||
AC_DEFUN([_XC_CHECK_COMMAND_TEST],
|
||||
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
#
|
||||
# Require that 'test' command is available.
|
||||
# Verify that 'echo' command is available, otherwise abort.
|
||||
#
|
||||
|
||||
xc_tst_str='unknown'
|
||||
test -n "$xc_tst_str" && xc_tst_str='success'
|
||||
(`echo "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success'
|
||||
case "x$xc_tst_str" in
|
||||
xsuccess)
|
||||
:
|
||||
;;
|
||||
*)
|
||||
# Try built-in echo, and fail.
|
||||
echo "$xc_msg_err 'echo' command not found. $xc_msg_abrt" >&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CFG_PRE_BASIC_CHK_CMD_TEST
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Emits shell code that verifies that 'test' command
|
||||
dnl is available, otherwise aborts execution.
|
||||
|
||||
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_TEST],
|
||||
[dnl
|
||||
#
|
||||
# Verify that 'test' command is available, otherwise abort.
|
||||
#
|
||||
|
||||
xc_tst_str='unknown'
|
||||
(`test -n "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success'
|
||||
case "x$xc_tst_str" in
|
||||
xsuccess)
|
||||
:
|
||||
@ -80,49 +100,48 @@ esac
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CHECK_PATH
|
||||
dnl _XC_CFG_PRE_BASIC_CHK_VAR_PATH
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Check that PATH is set, otherwise abort.
|
||||
dnl Emits shell code that verifies that 'PATH' variable
|
||||
dnl is set, otherwise aborts execution.
|
||||
|
||||
AC_DEFUN([_XC_CHECK_PATH],
|
||||
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_VAR_PATH],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
AC_REQUIRE([_XC_CHECK_COMMAND_TEST])dnl
|
||||
#
|
||||
# Require that PATH variable is set.
|
||||
# Verify that 'PATH' variable is set, otherwise abort.
|
||||
#
|
||||
|
||||
xc_tst_str='unknown'
|
||||
test -n "$PATH" && xc_tst_str='success'
|
||||
(`test -n "$PATH" >/dev/null 2>&1`) && xc_tst_str='success'
|
||||
case "x$xc_tst_str" in
|
||||
xsuccess)
|
||||
:
|
||||
;;
|
||||
*)
|
||||
echo "$xc_msg_err PATH variable not set. $xc_msg_abrt" >&2
|
||||
echo "$xc_msg_err 'PATH' variable not set. $xc_msg_abrt" >&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CHECK_COMMAND_EXPR
|
||||
dnl _XC_CFG_PRE_BASIC_CHK_CMD_EXPR
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Check that 'expr' command is available, else abort.
|
||||
dnl Emits shell code that verifies that 'expr' command
|
||||
dnl is available, otherwise aborts execution.
|
||||
|
||||
AC_DEFUN([_XC_CHECK_COMMAND_EXPR],
|
||||
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
#
|
||||
# Require that 'expr' command is available.
|
||||
# Verify that 'expr' command is available, otherwise abort.
|
||||
#
|
||||
|
||||
xc_tst_str='unknown'
|
||||
xc_tst_str=`expr "$xc_tst_str" : '.*'`
|
||||
xc_tst_str=(`expr "$xc_tst_str" : '.*' 2>/dev/null`)
|
||||
case "x$xc_tst_str" in
|
||||
x7)
|
||||
:
|
||||
@ -135,111 +154,117 @@ esac
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CHECK_UTILITY_SED
|
||||
dnl _XC_CFG_PRE_BASIC_CHK_UTIL_SED
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Check that 'sed' utility is found within PATH. This
|
||||
dnl 'sed' is required in order to allow configure script
|
||||
dnl bootstrapping itself. No fancy testing for a proper
|
||||
dnl 'sed' this early please, that should be done later.
|
||||
dnl Emits shell code that verifies that 'sed' utility
|
||||
dnl is found within 'PATH', otherwise aborts execution.
|
||||
dnl
|
||||
dnl This 'sed' is required in order to allow configure
|
||||
dnl script bootstrapping itself. No fancy testing for a
|
||||
dnl proper 'sed' this early, that should be done later.
|
||||
|
||||
AC_DEFUN([_XC_CHECK_UTILITY_SED],
|
||||
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_SED],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
#
|
||||
# Require that 'sed' utility is found within PATH.
|
||||
# Verify that 'sed' utility is found within 'PATH', otherwise abort.
|
||||
#
|
||||
|
||||
xc_tst_str='unknown'
|
||||
xc_tst_str=`echo "$xc_tst_str" | sed -e 's:unknown:success:'`
|
||||
xc_tst_str=(`echo "$xc_tst_str" 2>/dev/null \
|
||||
| sed -e 's:unknown:success:' 2>/dev/null`)
|
||||
case "x$xc_tst_str" in
|
||||
xsuccess)
|
||||
:
|
||||
;;
|
||||
*)
|
||||
echo "$xc_msg_err 'sed' utility not in PATH. $xc_msg_abrt" >&2
|
||||
echo "$xc_msg_err 'sed' utility not found in 'PATH'. $xc_msg_abrt" >&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CHECK_UTILITY_GREP
|
||||
dnl _XC_CFG_PRE_BASIC_CHK_UTIL_GREP
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Check that 'grep' utility is found within PATH. This
|
||||
dnl 'grep' is required in order to allow configure script
|
||||
dnl bootstrapping itself. No fancy testing for a proper
|
||||
dnl 'grep' this early please, that should be done later.
|
||||
dnl Emits shell code that verifies that 'grep' utility
|
||||
dnl is found within 'PATH', otherwise aborts execution.
|
||||
dnl
|
||||
dnl This 'grep' is required in order to allow configure
|
||||
dnl script bootstrapping itself. No fancy testing for a
|
||||
dnl proper 'grep' this early, that should be done later.
|
||||
|
||||
AC_DEFUN([_XC_CHECK_UTILITY_GREP],
|
||||
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
#
|
||||
# Require that 'grep' utility is found within PATH.
|
||||
# Verify that 'grep' utility is found within 'PATH', otherwise abort.
|
||||
#
|
||||
|
||||
xc_tst_str='unknown'
|
||||
echo "$xc_tst_str" | grep 'unknown' >/dev/null 2>&1 && xc_tst_str='success'
|
||||
(`echo "$xc_tst_str" 2>/dev/null \
|
||||
| grep 'unknown' >/dev/null 2>&1`) && xc_tst_str='success'
|
||||
case "x$xc_tst_str" in
|
||||
xsuccess)
|
||||
:
|
||||
;;
|
||||
*)
|
||||
echo "$xc_msg_err 'grep' utility not in PATH. $xc_msg_abrt" >&2
|
||||
echo "$xc_msg_err 'grep' utility not found in 'PATH'. $xc_msg_abrt" >&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CHECK_PATH_SEPARATOR
|
||||
dnl _XC_CFG_PRE_CHECK_PATH_SEPARATOR
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
dnl
|
||||
dnl Check and compute the path separator for us. This
|
||||
dnl path separator is the symbol used to diferentiate
|
||||
dnl or separate paths inside the PATH environment var.
|
||||
dnl Emits shell code that computes the path separator
|
||||
dnl and stores the result in 'PATH_SEPARATOR', unless
|
||||
dnl the user has already set it with a non-empty value.
|
||||
dnl
|
||||
dnl User provided PATH_SEPARATOR always overrides the
|
||||
dnl auto-detected one.
|
||||
dnl This path separator is the symbol used to separate
|
||||
dnl or diferentiate paths inside the 'PATH' environment
|
||||
dnl environment variable.
|
||||
dnl
|
||||
dnl Non-empty user provided 'PATH_SEPARATOR' always
|
||||
dnl overrides the auto-detected one.
|
||||
|
||||
AC_DEFUN([_XC_CHECK_PATH_SEPARATOR],
|
||||
AC_DEFUN([_XC_CFG_PRE_CHECK_PATH_SEPARATOR],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
AC_REQUIRE([_XC_CHECK_COMMAND_TEST])dnl
|
||||
AC_REQUIRE([_XC_CHECK_PATH])dnl
|
||||
AC_REQUIRE([_XC_CHECK_COMMAND_EXPR])dnl
|
||||
#
|
||||
# Auto-detect and set PATH_SEPARATOR, unless it is already set.
|
||||
# Auto-detect and set 'PATH_SEPARATOR', unless it is already non-empty set.
|
||||
#
|
||||
|
||||
# Directory count in PATH when using a colon separator.
|
||||
xc_tst_dirs_col=0
|
||||
# Directory count in 'PATH' when using a colon separator.
|
||||
xc_tst_dirs_col=''
|
||||
xc_tst_prev_IFS=$IFS; IFS=':'
|
||||
for xc_tst_dir in $PATH; do
|
||||
IFS=$xc_tst_prev_IFS
|
||||
test -d "$xc_tst_dir" && xc_tst_dirs_col=`expr $xc_tst_dirs_col + 1`
|
||||
xc_tst_dirs_col="x$xc_tst_dirs_col"
|
||||
done
|
||||
IFS=$xc_tst_prev_IFS
|
||||
xc_tst_dirs_col=(`expr "$xc_tst_dirs_col" : '.*'`)
|
||||
|
||||
# Directory count in PATH when using a semicolon separator.
|
||||
xc_tst_dirs_sem=0
|
||||
# Directory count in 'PATH' when using a semicolon separator.
|
||||
xc_tst_dirs_sem=''
|
||||
xc_tst_prev_IFS=$IFS; IFS=';'
|
||||
for xc_tst_dir in $PATH; do
|
||||
IFS=$xc_tst_prev_IFS
|
||||
test -d "$xc_tst_dir" && xc_tst_dirs_sem=`expr $xc_tst_dirs_sem + 1`
|
||||
xc_tst_dirs_sem="x$xc_tst_dirs_sem"
|
||||
done
|
||||
IFS=$xc_tst_prev_IFS
|
||||
xc_tst_dirs_sem=(`expr "$xc_tst_dirs_sem" : '.*'`)
|
||||
|
||||
if test $xc_tst_dirs_sem -eq $xc_tst_dirs_col; then
|
||||
# When both counting methods give the same result we do not want to
|
||||
# chose one over the other, and consider auto-detection not possible.
|
||||
if test -z "$PATH_SEPARATOR"; then
|
||||
# Stop dead until user provides PATH_SEPARATOR definition.
|
||||
echo "$xc_msg_err PATH_SEPARATOR variable not set. $xc_msg_abrt" >&2
|
||||
# Stop dead until user provides 'PATH_SEPARATOR' definition.
|
||||
echo "$xc_msg_err 'PATH_SEPARATOR' variable not set. $xc_msg_abrt" >&2
|
||||
exit 1
|
||||
fi
|
||||
else
|
||||
@ -252,21 +277,23 @@ else
|
||||
if test -z "$PATH_SEPARATOR"; then
|
||||
# Simply use the auto-detected one when not already set.
|
||||
PATH_SEPARATOR="$xc_tst_auto_separator"
|
||||
elif "x$PATH_SEPARATOR" != "x$xc_tst_auto_separator"; then
|
||||
echo "$xc_msg_warn PATH_SEPARATOR does not match auto-detected one." >&2
|
||||
elif test "x$PATH_SEPARATOR" != "x$xc_tst_auto_separator"; then
|
||||
echo "$xc_msg_warn 'PATH_SEPARATOR' does not match auto-detected one." >&2
|
||||
fi
|
||||
fi
|
||||
AC_SUBST([PATH_SEPARATOR])dnl
|
||||
])
|
||||
|
||||
|
||||
dnl _XC_CONFIGURE_PREAMBLE_SUCCESS_MSG
|
||||
dnl _XC_CFG_PRE_POSTLUDE
|
||||
dnl -------------------------------------------------
|
||||
dnl Private macro.
|
||||
|
||||
AC_DEFUN([_XC_CONFIGURE_PREAMBLE_SUCCESS_MSG],
|
||||
AC_DEFUN([_XC_CFG_PRE_POSTLUDE],
|
||||
[dnl
|
||||
echo "checking whether some basic commands and utilities are available... yes"
|
||||
|
||||
IFS=$xc_configure_preamble_prev_IFS
|
||||
])
|
||||
|
||||
|
||||
@ -276,15 +303,15 @@ dnl Private macro.
|
||||
|
||||
AC_DEFUN([_XC_CONFIGURE_PREAMBLE],
|
||||
[dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_COMMENT])dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_INIT])dnl
|
||||
AC_REQUIRE([_XC_CHECK_COMMAND_TEST])dnl
|
||||
AC_REQUIRE([_XC_CHECK_PATH])dnl
|
||||
AC_REQUIRE([_XC_CHECK_COMMAND_EXPR])dnl
|
||||
AC_REQUIRE([_XC_CHECK_UTILITY_SED])dnl
|
||||
AC_REQUIRE([_XC_CHECK_UTILITY_GREP])dnl
|
||||
AC_REQUIRE([_XC_CHECK_PATH_SEPARATOR])dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_SUCCESS_MSG])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl
|
||||
AC_REQUIRE([_XC_CFG_PRE_POSTLUDE])dnl
|
||||
])
|
||||
|
||||
|
||||
@ -298,7 +325,7 @@ dnl of some commands and utilities needed to allow
|
||||
dnl configure script bootstrapping itself when using
|
||||
dnl these to figure out other settings. Also performs
|
||||
dnl PATH_SEPARATOR auto-detection and sets its value
|
||||
dnl unless it is already set.
|
||||
dnl unless it is already set with a non-empty value.
|
||||
dnl
|
||||
dnl These basic checks are intended to be placed and
|
||||
dnl executed as early as possible in the resulting
|
||||
@ -307,7 +334,7 @@ dnl shell code.
|
||||
dnl
|
||||
dnl Although this is a public macro it should not be
|
||||
dnl used directly from configure.ac given that in this
|
||||
dnl way its expansion is not placed early enough in
|
||||
dnl way its expansion may not be placed early enough in
|
||||
dnl generated configure script, it simply makes little
|
||||
dnl sense to perform these basic checks once the script
|
||||
dnl is into more serious business.
|
||||
@ -320,12 +347,15 @@ AC_DEFUN([XC_CONFIGURE_PREAMBLE],
|
||||
[dnl
|
||||
AC_PREREQ([2.50])dnl
|
||||
AC_BEFORE([$0],[_XC_CONFIGURE_PREAMBLE])dnl
|
||||
AC_BEFORE([$0],[_XC_CHECK_COMMAND_TEST])dnl
|
||||
AC_BEFORE([$0],[_XC_CHECK_PATH])dnl
|
||||
AC_BEFORE([$0],[_XC_CHECK_COMMAND_EXPR])dnl
|
||||
AC_BEFORE([$0],[_XC_CHECK_UTILITY_SED])dnl
|
||||
AC_BEFORE([$0],[_XC_CHECK_UTILITY_GREP])dnl
|
||||
AC_BEFORE([$0],[_XC_CHECK_PATH_SEPARATOR])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_PREAMBLE])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl
|
||||
AC_BEFORE([$0],[_XC_CFG_PRE_POSTLUDE])dnl
|
||||
AC_REQUIRE([_XC_CONFIGURE_PREAMBLE])dnl
|
||||
m4_define([$0],[])dnl
|
||||
])
|
||||
|
||||
Loading…
Reference in New Issue
Block a user