cgo: handle references to symbols in shared libraries
Fixes #1334.
R=r
CC=golang-dev
https://golang.org/cl/3746041
diff --git a/src/Make.pkg b/src/Make.pkg
index 420f610..e4cdaae 100644
--- a/src/Make.pkg
+++ b/src/Make.pkg
@@ -116,8 +116,8 @@
CGOPKGPATH=$(dir) cgo -- $(CGO_CFLAGS) $(CGOFILES)
endif
-# Ugly but necessary
-_cgo_gotypes.go _cgo_export.c _cgo_export.h: _cgo_defun.c
+# Ugly but necessary - cgo writes these files too.
+_cgo_gotypes.go _cgo_export.c _cgo_export.h _cgo_main.c: _cgo_defun.c
@true
%.cgo1.go %.cgo2.c: _cgo_defun.c
@@ -134,10 +134,6 @@
# and libraries are involved, instead of duplicating gcc's logic ourselves.
# After main we have to define all the symbols that will be provided
# by Go code. That's crosscall2 and any exported symbols.
-_cgo_main.c: _cgo_defun.c
- echo 'int main() { return 0; }' >$@
- echo 'int crosscall2;' >>$@
- awk -F'(' '/^_cgoexp_/ {print "int " $$1 ";"}' _cgo_defun.c >>$@
_cgo_main.o: _cgo_main.c
$(HOST_CC) $(_CGO_CFLAGS_$(GOARCH)) -g -fPIC -O2 -o $@ -c $(CGO_CFLAGS) _cgo_main.c
