AC_ARG_WITH([system-llvm], [AC_HELP_STRING([--with-system-llvm], [use system llvm instead of built-in, uses full path to llvm-config @<:@default=/usr/local or /usr if not found in /usr/local@:>@])], [case "$withval" in yes) system_llvm="default" ;; no) system_llvm="built-in" ;; *) system_llvm=$withval esac ], [system_llvm="built-in"]) AC_ARG_ENABLE([llvm],AC_HELP_STRING([--enable-llvm], [enable 'llvm' JIT/verifier support @<:@default=auto@:>@]), [enable_llvm=$enableval], [ if test "x$system_llvm" != "xbuilt-in"; then enable_llvm="yes" else enable_llvm="auto" fi ]) if test "$enable_llvm" != "no"; then dnl Try to configure subdir, optionally AC_CONFIG_SUBDIRS_OPTIONAL([libclamav/c++]) else system_llvm="none" fi