CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
AC_SUBST(CC_FOR_BUILD)
+AC_PROG_AWK
+
WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
AC_SUBST(WARN_FLAGS)
AC_SUBST(GOARCH)
dnl Some files are only present when needed for specific architectures.
-GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
-if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
- GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
+GO_LIBCALL_OS_FILE=
+GO_LIBCALL_OS_ARCH_FILE=
+GO_SYSCALL_OS_FILE=
+GO_SYSCALL_OS_ARCH_FILE=
+if test -f ${srcdir}/go/syscall/libcall_${GOOS}.go; then
+ GO_LIBCALL_OS_FILE=go/syscall/libcall_${GOOS}.go
+fi
+if test -f ${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go; then
+ GO_LIBCALL_OS_ARCH_FILE=go/syscall/libcall_${GOOS}_${GOARCH}.go
+fi
+if test -f ${srcdir}/go/syscall/syscall_${GOOS}.go; then
+ GO_SYSCALL_OS_FILE=go/syscall/syscall_${GOOS}.go
fi
-AC_SUBST(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE)
+if test -f ${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go; then
+ GO_SYSCALL_OS_ARCH_FILE=go/syscall/syscall_${GOOS}_${GOARCH}.go
+fi
+AC_SUBST(GO_LIBCALL_OS_FILE)
+AC_SUBST(GO_LIBCALL_OS_ARCH_FILE)
+AC_SUBST(GO_SYSCALL_OS_FILE)
+AC_SUBST(GO_SYSCALL_OS_ARCH_FILE)
dnl Some targets need special flags to build sysinfo.go.
case "$target" in
AC_CHECK_TYPES(off64_t)
CFLAGS=$CFLAGS_hold
+dnl Work out the size of the epoll_events struct on GNU/Linux.
+AC_CACHE_CHECK([epoll_event size],
+[libgo_cv_c_epoll_event_size],
+[AC_COMPUTE_INT(libgo_cv_c_epoll_event_size,
+[sizeof (struct epoll_event)],
+[#include <sys/epoll.h>],
+[libgo_cv_c_epoll_event_size=0])])
+SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size}
+AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT)
+
+dnl Work out the offset of the fd field in the epoll_events struct on
+dnl GNU/Linux.
+AC_CACHE_CHECK([epoll_event data.fd offset],
+[libgo_cv_c_epoll_event_fd_offset],
+[AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset,
+[offsetof (struct epoll_event, data.fd)],
+[#include <stddef.h>
+#include <sys/epoll.h>],
+[libgo_cv_c_epoll_event_fd_offset=0])])
+STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset}
+AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET)
+
AC_CACHE_SAVE
if test ${multilib} = yes; then