
These configure vars are modified in a curl-specific way but never evaluated or loaded from cache, even though they are designated as _cv_. We could either implement proper AC_CACHE_CHECKs for them, or remove them completely. Fixes #603 as ac_cv_func_gethostbyname is no longer clobbered, and AC_CHECK_FUNC(gethostbyname...) will no longer spuriously succeed after the first configure run with caching. `ac_cv_func_strcasecmp` is curious, see #770. `eval "ac_cv_func_$func=yes"` can still cause problems as it works in tandem with AC_CHECK_FUNCS and then potentially modifies its result. It would be best to rewrite this test to use a new CURL_CHECK_FUNCS macro, which works the same as AC_CHECK_FUNCS but relies on caching the values of curl_cv_func_* variables, without modifiying ac_cv_func_*.
Curl is a command line tool for transferring data specified with URL syntax. Find out how to use curl by reading the curl.1 man page or the MANUAL document. Find out how to install Curl by reading the INSTALL document.
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