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autoconf: modernize and modularize

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Use my modular m4 library used for other things as well; update
autoconf macros to 2.71 standard.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2024-06-10 18:24:53 -07:00
parent 33051a296c
commit fefaa2cc5c
35 changed files with 680 additions and 461 deletions
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19
autoconf/m4/pa_arg_bool.m4 Normal file
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@ -0,0 +1,19 @@
dnl --------------------------------------------------------------------------
dnl PA_ARG_BOOL(option,helptext,default,enabled_action,disabled_action)
dnl
dnl The last three arguments are optional; default can be yes or no.
dnl
dnl Simpler-to-use versions of AC_ARG_ENABLED, that include the
dnl test for $enableval and the AS_HELP_STRING definition. This is only
dnl to be used for boolean options.
dnl --------------------------------------------------------------------------
AC_DEFUN([PA_ARG_BOOL],
[m4_pushdef([pa_default],m4_default(m4_normalize([$3]),[no]))
m4_pushdef([pa_option],m4_case(pa_default,[yes],[disable],[enable]))
AC_ARG_ENABLE([$1],
[AS_HELP_STRING([--]m4_defn([pa_option])[-$1],[$2])],
[pa_arg_bool_enableval="$enableval"],
[pa_arg_bool_enableval="]m4_defn([pa_default])["])
m4_popdef([pa_option], [pa_default])
AS_IF([test x"$pa_arg_bool_enableval" != xno], [$4], [$5])
])