+
+ PHP_ARG_ENABLE(psi-posix, whether to pre-define POSIX decls,
+ [ --enable-psi-posix=... PSI: pre-define POSIX decls], [ ], [ ])
+
+ PHP_ARG_WITH(psi-libjit, where to find libjit,
+ [ --with-psi-libjit=DIR PSI: path to libjit], [ ], [ ])
+
+ PHP_ARG_WITH(psi-libffi, where to find libffi,
+ [ --with-psi-libffi=DIR PSI: path to libffi], [ ], [ ])
+
+ AC_HEADER_ASSERT dnl # adds --disable-assert to define NDEBUG
+
+ dnl we cannot use AC_USE_SYSTEM_EXTENSIONS here, because we're way too late
+ dnl in the game, and we're currently only targeting _GNU_SOURCE for now
+ AC_MSG_CHECKING([for _GNU_SOURCE])
+ AC_EGREP_CPP([gnu_source_defined], [
+ #ifndef _GNU_SOURCE
+ gnu_source_not_defined
+ #endif
+ ], [
+ AC_MSG_RESULT([needs define])
+ AC_DEFINE([_GNU_SOURCE], [], [ ])
+ ], [
+ AC_MSG_RESULT([already defined])
+ ])
+
+ psi_save_LIBS=$LIBS
+ LIBS=