m4/acinclude.m4: write ETH_P_ALL check as function body, not function definition#110
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ofalk merged 2 commits intoofalk:develfrom Jul 13, 2025
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…on definition - Fixes ofalk#109 - `AC_TRY_COMPILE` macro's second argument is a function body, not a complete function definition. Placing a complete function defintion here results in m4 generating a malformed test program with a function definition inside another function defintion, which would break the check to make it always evaluate false whenever Clang is used, since Clang rejects programs that use GCC-only extensions like function definition inside another function definition.
- Necessary to apply the `ETH_P_ALL` function body change to the `configure` script, in order to fix ofalk#109 - `aclocal --force` run - `autoreconf -fi` run - `autom4te.cache`, which appeared afterward, added to `.gitignore`
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Fixes building using Autotools + Clang causes PF_PACKET support detection to fail #109
AC_TRY_COMPILEmacro's second argument is a function body, not acomplete function definition. Placing a complete function defintion
here results in m4 generating a malformed test program with a function
definition inside another function defintion, which would break the
check to make it always evaluate false whenever Clang is used, since
Clang rejects programs that use GCC-only extensions like function
definition inside another function definition.
Autotools files regenerated, necessary to apply the
ETH_P_ALLfunction body change to theconfigurescriptaclocal --forcerunautoreconf -firunautom4te.cache, which appeared afterward, added to.gitignore