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0b9f93e6b0
code relies on the checking macro actually being called at the end, or the automatic undiversion will produce garbage. These sort of implicit side-effects undermine the modularity of the macros and happen to break the ODBC driver which makes use of them. Also put the warnings at the very end of configure, so there is an even better chance of seeing them.
153 lines
4.7 KiB
Plaintext
153 lines
4.7 KiB
Plaintext
# $PostgreSQL: pgsql/config/general.m4,v 1.7 2006/10/30 22:15:04 petere Exp $
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# This file defines new macros to process configure command line
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# arguments, to replace the brain-dead AC_ARG_WITH and AC_ARG_ENABLE.
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# The flaw in these is particularly that they only differentiate
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# between "given" and "not given" and do not provide enough help to
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# process arguments that only accept "yes/no", that require an
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# argument (other than "yes/no"), etc.
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#
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# The point of this implementation is to reduce code size and
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# redundancy in configure.in and to improve robustness and consistency
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# in the option evaluation code.
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# Convert type and name to shell variable name (e.g., "enable_long_strings")
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m4_define([pgac_arg_to_variable],
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[$1[]_[]patsubst($2, -, _)])
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# PGAC_ARG(TYPE, NAME, HELP-STRING,
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# [ACTION-IF-YES], [ACTION-IF-NO], [ACTION-IF-ARG],
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# [ACTION-IF-OMITTED])
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# ----------------------------------------------------------
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# This is the base layer. TYPE is either "with" or "enable", depending
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# on what you like. NAME is the rest of the option name, HELP-STRING
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# as usual. ACTION-IF-YES is executed if the option is given without
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# an argument (or "yes", which is the same); similar for ACTION-IF-NO.
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AC_DEFUN([PGAC_ARG],
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[
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pgac_args="$pgac_args pgac_arg_to_variable([$1],[$2])"
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m4_case([$1],
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enable, [
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AC_ARG_ENABLE([$2], [$3], [
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case [$]enableval in
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yes)
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m4_default([$4], :)
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;;
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no)
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m4_default([$5], :)
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;;
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*)
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$6
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;;
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esac
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],
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[$7])[]dnl AC_ARG_ENABLE
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],
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with, [
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AC_ARG_WITH([$2], [$3], [
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case [$]withval in
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yes)
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m4_default([$4], :)
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;;
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no)
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m4_default([$5], :)
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;;
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*)
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$6
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;;
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esac
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],
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[$7])[]dnl AC_ARG_WITH
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],
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[m4_fatal([first argument of $0 must be 'enable' or 'with', not '$1'])]
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)
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])# PGAC_ARG
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# PGAC_ARG_CHECK()
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# ----------------
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# Checks if the user passed any --with/without/enable/disable
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# arguments that were not defined. Just prints out a warning message,
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# so this should be called near the end, so the user will see it.
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AC_DEFUN([PGAC_ARG_CHECK],
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[for pgac_var in `set | sed 's/=.*//' | $EGREP 'with_|enable_'`; do
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for pgac_arg in $pgac_args with_gnu_ld; do
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if test "$pgac_var" = "$pgac_arg"; then
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continue 2
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fi
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done
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pgac_txt=`echo $pgac_var | tr '_' '-'`
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AC_MSG_WARN([option ignored: --$pgac_txt])
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done])# PGAC_ARG_CHECK
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# PGAC_ARG_BOOL(TYPE, NAME, DEFAULT, HELP-STRING,
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# [ACTION-IF-YES], [ACTION-IF-NO])
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# -----------------------------------------------
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# Accept a boolean option, that is, one that only takes yes or no.
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# ("no" is equivalent to "disable" or "without"). DEFAULT is what
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# should be done if the option is omitted; it should be "yes" or "no".
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# (Consequently, one of ACTION-IF-YES and ACTION-IF-NO will always
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# execute.)
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AC_DEFUN([PGAC_ARG_BOOL],
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[PGAC_ARG([$1], [$2], [$4], [$5], [$6],
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[AC_MSG_ERROR([no argument expected for --$1-$2 option])],
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[m4_case([$3],
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yes, [pgac_arg_to_variable([$1], [$2])=yes
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$5],
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no, [pgac_arg_to_variable([$1], [$2])=no
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$6],
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[m4_fatal([third argument of $0 must be 'yes' or 'no', not '$3'])])])[]dnl
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])# PGAC_ARG_BOOL
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# PGAC_ARG_REQ(TYPE, NAME, HELP-STRING, [ACTION-IF-GIVEN], [ACTION-IF-NOT-GIVEN])
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# -------------------------------------------------------------------------------
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# This option will require an argument; "yes" or "no" will not be
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# accepted.
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AC_DEFUN([PGAC_ARG_REQ],
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[PGAC_ARG([$1], [$2], [$3],
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[AC_MSG_ERROR([argument required for --$1-$2 option])],
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[AC_MSG_ERROR([argument required for --$1-$2 option])],
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[$4],
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[$5])])# PGAC_ARG_REQ
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# PGAC_ARG_OPTARG(TYPE, NAME, HELP-STRING, [DEFAULT-ACTION], [ARG-ACTION]
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# [ACTION-ENABLED], [ACTION-DISABLED])
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# -----------------------------------------------------------------------
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# This will create an option that behaves as follows: If omitted, or
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# called with "no", then set the enable_variable to "no" and do
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# nothing else. If called with "yes", then execute DEFAULT-ACTION. If
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# called with argument, set enable_variable to "yes" and execute
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# ARG-ACTION. Additionally, execute ACTION-ENABLED if we ended up with
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# "yes" either way, else ACTION-DISABLED.
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#
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# The intent is to allow enabling a feature, and optionally pass an
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# additional piece of information.
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AC_DEFUN([PGAC_ARG_OPTARG],
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[PGAC_ARG([$1], [$2], [$3], [$4], [],
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[pgac_arg_to_variable([$1], [$2])=yes
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$5],
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[pgac_arg_to_variable([$1], [$2])=no])
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dnl Add this code only if there's a ACTION-ENABLED or ACTION-DISABLED.
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m4_ifval([$6[]$7],
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[
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if test "[$]pgac_arg_to_variable([$1], [$2])" = yes; then
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m4_default([$6], :)
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m4_ifval([$7],
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[else
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$7
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])[]dnl
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fi
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])[]dnl
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])# PGAC_ARG_OPTARG
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