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23 lines
1020 B
Markdown
23 lines
1020 B
Markdown
Configuration tests
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Libpqxx comes with support for different build systems: the GNU autotools,
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CMake, Visual Studio's "nmake", and raw GNU "make" on Windows.
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For several of these build systems, we need to test things like "does this
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compiler environment support `std::to_chars` for floating-point types?"
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We test these things by trying to compile a particular snippet of code, and
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seeing whether that succeeds.
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To avoid duplicating those snippets for multiple build systems, we put them
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here. Both the autotools configuration and the CMake configuration can refer to
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them that way.
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It took a bit of nasty magic to read a C++ source file into m4 and treat it as
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a string literal, without macro expansion. There is every chance that I missed
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something, so be prepared for tests failing for unexpected reasons! Some C++
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syntax may end up having an unforeseen meaning in m4, and screw up the handling
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of the code snippet. Re-configure, and read your logs carefully after editing
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these snippets.
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