configure.ac: upgrade ancient snprintf macro to modern autoconf-archive edition #37
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Instead of hardcoding calls to builtin(include) of all things! autoreconf will detect existing macros in the specified macros directory automatically and ensure that calls to `m4_include()` are synthesized for you. We use ACLOCAL_AMFLAGS to ensure that updated versions of macros we use get locally installed.
…ve edition ac_func_snprintf was very old, and produced illogical results with modern compilers. Specifically, the check always failed and claimed: ``` checking for snprintf... yes checking for vsnprintf... yes checking for working snprintf... no checking for working vsnprintf... no configure: WARNING: Will use fallback (v)snprintf() implementation. ``` autoconf-archive has migrated to a dedicated AX_ namespace and released a couple decades worth of improvements, including fixing this particular bug in 2022. Bug: https://bugs.gentoo.org/898602
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ac_func_snprintf was very old, and produced illogical results with modern compilers. Specifically, the check always failed and claimed:
autoconf-archive has migrated to a dedicated AX_ namespace and released a couple decades worth of improvements, including fixing this particular bug in 2022.
Bug: https://bugs.gentoo.org/898602