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nasm/autoconf/m4/pa_build_ifelse.m4
H. Peter Anvin 5a2d629501 autoconf: a much of macro fixes... not sure how this ever worked?
Exposed a bunch of problems with the autoconf m4 macro
library. Hopefulyy fix it, and tidy it up in the process.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2023-02-19 21:26:15 -08:00

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dnl --------------------------------------------------------------------------
dnl PA_BUILD_IFELSE(input [,success [,failure]])
dnl
dnl Same as AC_LINK_IFELSE for languages where linking is applicable,
dnl otherwise AC_COMPILE_IFELSE.
dnl
dnl If the first argument is empty, use _AC_LANG_IO_PROGRAM.
dnl --------------------------------------------------------------------------
m4_defun([_PA_BUILD_IFELSE],
[m4_case(_AC_LANG,
[Erlang], [AC_COMPILE_IFELSE($@)],
[AC_LINK_IFELSE($@)])])
AC_DEFUN([PA_BUILD_IFELSE],
[_PA_BUILD_IFELSE([m4_ifblank([$1],[AC_LANG_SOURCE(_AC_LANG_IO_PROGRAM)],
[$1])],[$2],[$3])])