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docs: document the need for a 64-bit type and stdint.h

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These are requirements above and above C89.

Closes #20384
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Dan Fandrich 2025-01-09 10:57:39 -08:00
parent 86190dccb3
commit 81dd66f794
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docs/INTERNALS.md
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@ -14,7 +14,9 @@ versions of libs and build tools.
We write curl and libcurl to compile with C89 compilers on 32-bit and up
machines. Most of libcurl assumes more or less POSIX compliance but that is
not a requirement.
not a requirement. The compiler must support a 64-bit integer type as well as
supply a stdint.h (or inttypes.h) header file that defines C99-style
fixed-width integer types like uint32_t.
We write libcurl to build and work with lots of third party tools, and we
want it to remain functional and buildable with these and later versions