syscall: Portability code for epoll_event on GNU/Linux.

[pf3gnuchains/gcc-fork.git] / libgo / Makefile.in

diff --git a/libgo/Makefile.in b/libgo/Makefile.in
index 05223a6..da7031f 100644 (file)
--- a/libgo/Makefile.in
+++ b/libgo/Makefile.in
@@ -424,9 +424,11 @@ RANLIB = @RANLIB@
 SED = @SED@
 SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
+SIZEOF_STRUCT_EPOLL_EVENT = @SIZEOF_STRUCT_EPOLL_EVENT@
 SPLIT_STACK = @SPLIT_STACK@
 STRINGOPS_FLAG = @STRINGOPS_FLAG@
 STRIP = @STRIP@
+STRUCT_EPOLL_EVENT_FD_OFFSET = @STRUCT_EPOLL_EVENT_FD_OFFSET@
 VERSION = @VERSION@
 WARN_FLAGS = @WARN_FLAGS@
 WERROR = @WERROR@
@@ -1868,7 +1870,7 @@ go_testing_script_files = \
 @LIBGO_IS_LINUX_FALSE@@LIBGO_IS_SOLARIS_TRUE@syscall_socket_file = go/syscall/socket_solaris.go
 
 # Define socket sizes and types.
-@LIBGO_IS_LINUX_TRUE@syscall_socket_file = go/syscall/socket_linux.go
+@LIBGO_IS_LINUX_TRUE@syscall_socket_file = go/syscall/socket_linux.go epoll.go
 @LIBGO_IS_386_FALSE@@LIBGO_IS_SOLARIS_TRUE@syscall_uname_file = go/syscall/libcall_uname.go
 
 # Support for uname.
@@ -4475,6 +4477,34 @@ s-sysinfo: $(srcdir)/mksysinfo.sh config.h
        $(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
        $(STAMP) $@
 
+# The epoll struct has an embedded union and is packed on x86_64,
+# which is too complicated for mksysinfo.sh.  We find the offset of
+# the only field we care about in configure.ac, and generate the
+# struct here.
+epoll.go: s-epoll; @true
+s-epoll: Makefile
+       rm -f epoll.go.tmp
+       echo 'package syscall' > epoll.go.tmp
+       echo 'type EpollEvent struct {' >> epoll.go.tmp
+       echo '  Events uint32' >> epoll.go.tmp
+       case "$(SIZEOF_STRUCT_EPOLL_EVENT),$(STRUCT_EPOLL_EVENT_FD_OFFSET)" in \
+       0,0) echo 1>&2 "*** struct epoll_event data.fd offset unknown"; \
+          exit 1; ;; \
+       8,4) echo '     Fd int32' >> epoll.go.tmp; ;; \
+       12,4) echo '    Fd int32' >> epoll.go.tmp; \
+          echo '       Pad [4]byte' >> epoll.go.tmp; ;; \
+       12,8) echo '    Pad [4]byte' >> epoll.go.tmp; \
+          echo '       Fd int32' >> epoll.go.tmp; ;; \
+       16,8) echo '    Pad [4]byte' >> epoll.go.tmp; \
+          echo '       Fd int32' >> epoll.go.tmp; \
+          echo '       Pad2 [4]byte' >> epoll.go.tmp; ;; \
+       *) echo 1>&2 "*** struct epoll_event unsupported"; \
+          exit 1; ;; \
+       esac
+       echo '}' >> epoll.go.tmp
+       $(SHELL) $(srcdir)/../move-if-change epoll.go.tmp epoll.go
+       $(STAMP) $@
+
 asn1/asn1.lo: $(go_asn1_files) big.gox bytes.gox fmt.gox io.gox os.gox \
                reflect.gox strconv.gox strings.gox time.gox
        $(BUILDPACKAGE)