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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_flags_langlist.m4 Normal file
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@ -0,0 +1,19 @@
dnl --------------------------------------------------------------------------
dnl PA_FLAGS_LANGLIST(flagvar)
dnl
dnl Return a list of languages affected by the variable flagvar.
dnl If flagvar is unknown, assume it affects the current language.
dnl --------------------------------------------------------------------------
AC_DEFUN([PA_FLAGS_LANGLIST],
[m4_dquote(m4_case([$1],
[CPPFLAGS], [[C],[C++],[Objective C],[Objective C++]],
[CFLAGS], [[C]],
[CXXFLAGS], [[C++]],
[FFLAGS], [[Fortran 77]],
[FCFLAGS], [[Fortran]],
[ERLCFLAGS], [[Erlang]],
[OBJCFLAGS], [[Objective C]],
[OBJCXXFLAGS], [[Objective C++]],
[GOFLAGS], [[Go]],
[LDFLAGS], [[C],[C++],[Fortran 77],[Fortran],[Objective C],[Objective C++],[Go]],
m4_dquote(_AC_LANG)))])