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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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15
autoconf/m4/pa_lang_foreach.m4 Normal file
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@ -0,0 +1,15 @@
dnl --------------------------------------------------------------------------
dnl PA_LANG_FOREACH(subset, body)
dnl
dnl Expand [body] for each language encountered in the configure script also
dnl present in [subset], or all if [subset] is empty
dnl --------------------------------------------------------------------------
AC_DEFUN([_PA_LANG_DO],dnl
[AC_LANG([$2])dnl
$1])
AC_DEFUN([PA_LANG_FOREACH],dnl
[m4_pushdef([_pa_lang_foreach_current],[_AC_LANG])dnl
m4_map_args([m4_curry([_PA_LANG_DO],[$2])],m4_unquote(PA_LANG_SEEN_LIST($1)))dnl
AC_LANG(_pa_lang_foreach_current)dnl
m4_popdef([_pa_lang_foreach_current])])