c-ares

A C library for asynchronous DNS requests (grpc依赖)

Brad House 4f490b40df Autotools: rework to simplify and fix recent issues (#674 ) Completely rework the autotools build system, issues have cropped up due to the complexity and could cause issues on even semi-modern Linux systems (Ubuntu 20.04 for example). Changes include: Remove all curl/xc/cares m4 helper files, they go overboard on detections of functions and datatypes. Go back to more plain autoconf macros as they've come a long way over the years. Use known systems and heuristics to determine datatypes for functions like send() and recv(), rather than the error prone detection which required thousands of permutations and might still get it wrong. Remove unneeded configure arguments like --enable-debug or --enable-optimize, its more common for people to simply pass their own CFLAGS on the command line. Only require CARES_STATICLIB definition on Windows static builds, its not necessary ever for other systems, even when hiding non-public symbols. Remove some function and definition detections that were never used in c-ares The test framework is now embedded into the toplevel configure system, there was no need to chain build the test system as it is never built externally to c-ares. As a side-effect of the changes, a configure run completes in about 25% of the original time. This has been tested on various Linux distributions (of varying age), FreeBSD, MacOS, Windows (via MSYS2 with Mingw), and Solaris10/11 (by @dfandrich), AIX 7.3 (by @dfandrich). It is not unlikely that this may have broken more esoteric or legacy systems, and we'll likely need to be ready to accept bug reports and patches, but it has removed over 10k lines of build system code. It is very likely any issues that crop up will add far fewer lines of code to fix such systems. Fixes Bug: #670 Fix By: Brad House (@bradh352)		11 months ago
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.gitignore	Avoid buffer overflow in RC4 loop comparison (#336 )	4 years ago
ax_ac_append_to_file.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_ac_print_to_file.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_add_am_macro_static.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_am_macros_static.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_append_compile_flags.m4	Increase compiler warnings by default (#568 )	1 year ago
ax_append_flag.m4	Increase compiler warnings by default (#568 )	1 year ago
ax_append_link_flags.m4	Autotools: rework to simplify and fix recent issues (#674 )	11 months ago
ax_check_compile_flag.m4	Increase compiler warnings by default (#568 )	1 year ago
ax_check_gnu_make.m4	autotools: add ax_check_gnu_make.m4	3 years ago
ax_check_link_flag.m4	Autotools: rework to simplify and fix recent issues (#674 )	11 months ago
ax_check_user_namespace.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
ax_check_uts_namespace.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
ax_code_coverage.m4	autotools: dont use newer AC_CHECK_INCLUDES_DEFAULT, don't quote AC_ERROR_MSG	3 years ago
ax_compiler_vendor.m4	Autotools: rework to simplify and fix recent issues (#674 )	11 months ago
ax_cxx_compile_stdcxx.m4	Use external GoogleTest instead of bundling it (#655 )	12 months ago
ax_cxx_compile_stdcxx_14.m4	Use external GoogleTest instead of bundling it (#655 )	12 months ago
ax_file_escapes.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_pthread.m4	sync ax_pthread.m4 with upstream (#507 )	2 years ago
ax_require_defined.m4	autotools: add ax_require_defined.m4	3 years ago
pkg.m4	Use external GoogleTest instead of bundling it (#655 )	12 months ago