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[sr #110532] AC_CHECK_LIB no longer works with a C++ compiler

From: Zack Weinberg
Subject: [sr #110532] AC_CHECK_LIB no longer works with a C++ compiler
Date: Thu, 26 Aug 2021 16:14:53 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0

Follow-up Comment #1, sr #110532 (project autoconf):

This (and the matching set of changes to AC_LANG_CALL(C++)) is in fact the
main thing I was thinking of when I wrote in the 2.70 release notes that
"setting CC to a C++ compiler is no longer supported."

That said, I'm not rejecting your patch out of hand, but I would like more
detail on exactly what you did that caused code generated by AC_LANG_CALL(C)
to get processed by a C++ compiler.  If, for instance, there is some obstacle
you're encountering that prevents you from using AC_LANG(C++) in all the right
places, perhaps we should fix _that_ instead.


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