kc3-lang/SDL

2021-06-28T02:00:24

configure.ac: manually check immintrin.h with AC_COMPILE_IFELSE(). AC_CHECK_HEADER() emits warnings when configuring for non-x86, because the preprocessor check is OK but the compile check is not: configure: WARNING: immintrin.h: present but cannot be compiled configure: WARNING: immintrin.h: check for missing prerequisite headers? configure: WARNING: immintrin.h: see the Autoconf documentation configure: WARNING: immintrin.h: section "Present But Cannot Be Compiled" configure: WARNING: immintrin.h: proceeding with the compiler's result