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[sr #110532] AC_CHECK_LIB no longer works with a C++ compiler
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From: |
Vincent Lefèvre |
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Subject: |
[sr #110532] AC_CHECK_LIB no longer works with a C++ compiler |
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Date: |
Thu, 26 Aug 2021 20:34:59 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0 |
Follow-up Comment #2, sr #110532 (project autoconf):
MPFR is written in C, and it is generally compiled with a C compiler, so that
we expect the compiler to be given by $CC. This means that we need AC_LANG(C),
not AC_LANG(C++).
But we also allow C++ compilers (some compilers seem to support only C++, and
testing with a C++ compiler also allows us to detect some issues with the
header files). And since the compiler is given by $CC, g++ (for instance) is
used via CC=g++.
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