Make rpath work on mac

Author: brson

mk/platform.mk

@@ -22,6 +22,7 @@ ifneq ($(findstring freebsd,$(CFG_OSTYPE)),)
   CFG_UNIXY := 1
   CFG_LDENV := LD_LIBRARY_PATH
   CFG_DEF_SUFFIX := .bsd.def
+  CFG_INSTALL_NAME =
 endif
 
 ifneq ($(findstring linux,$(CFG_OSTYPE)),)
@@ -48,6 +49,7 @@ ifneq ($(findstring linux,$(CFG_OSTYPE)),)
       CFG_PERF_TOOL := /usr/bin/time --verbose
     endif
   endif
+  CFG_INSTALL_NAME =
 endif
 
 ifneq ($(findstring darwin,$(CFG_OSTYPE)),)
@@ -71,6 +73,8 @@ ifneq ($(findstring darwin,$(CFG_OSTYPE)),)
   CFG_GCCISH_LINK_FLAGS += -m32
   CFG_DSYMUTIL := dsymutil
   CFG_DEF_SUFFIX := .darwin.def
+  # Mac requires this flag to make rpath work
+  CFG_INSTALL_NAME = -Wl,-install_name,@rpath/$(1)
 endif
 
 ifneq ($(findstring mingw,$(CFG_OSTYPE)),)
@@ -154,7 +158,7 @@ ifdef CFG_WINDOWSY
     CFG_GCCISH_CFLAGS += -march=i686
     CFG_GCCISH_LINK_FLAGS += -shared -fPIC
   endif
-
+  CFG_INSTALL_NAME =
 endif
 
 
@@ -169,7 +173,7 @@ ifeq ($(CFG_C_COMPILER),clang)
   CFG_DEPEND_C = $(CFG_GCCISH_CROSS)$(CXX) $(CFG_GCCISH_CFLAGS) -MT "$(1)" \
     -MM $(2)
   CFG_LINK_C = $(CFG_GCCISH_CROSS)$(CXX) $(CFG_GCCISH_LINK_FLAGS) -o $(1) \
-    $(CFG_GCCISH_DEF_FLAG)$(3) $(2)
+    $(CFG_GCCISH_DEF_FLAG)$(3) $(2) $(call CFG_INSTALL_NAME,$(4))
 else
 ifeq ($(CFG_C_COMPILER),gcc)
   CC=gcc
@@ -181,7 +185,7 @@ ifeq ($(CFG_C_COMPILER),gcc)
   CFG_DEPEND_C = $(CFG_GCCISH_CROSS)$(CXX) $(CFG_GCCISH_CFLAGS) -MT "$(1)" \
     -MM $(2)
   CFG_LINK_C = $(CFG_GCCISH_CROSS)$(CXX) $(CFG_GCCISH_LINK_FLAGS) -o $(1) \
-               $(CFG_GCCISH_DEF_FLAG)$(3) $(2)
+               $(CFG_GCCISH_DEF_FLAG)$(3) $(2) $(call CFG_INSTALL_NAME,$(4))
 else
   CFG_ERR := $(error please try on a system with gcc or clang)
 endif

mk/rt.mk

@@ -112,7 +112,7 @@ rt/$(CFG_RUNTIME): $(RUNTIME_OBJS) $(MKFILES) $(RUNTIME_HDR) $(RUNTIME_DEF) $(RU
 	@$(call E, link: $@)
 	$(Q)$(call CFG_LINK_C,$@, $(RUNTIME_OBJS) \
 	  $(CFG_GCCISH_POST_LIB_FLAGS) $(RUNTIME_LIBS) \
-	  $(CFG_LIBUV_LINK_FLAGS),$(RUNTIME_DEF))
+	  $(CFG_LIBUV_LINK_FLAGS),$(RUNTIME_DEF),$(CFG_RUNTIME))
 
 # FIXME: For some reason libuv's makefiles can't figure out the correct definition
 # of CC on the mingw I'm using, so we are explicitly using gcc. Also, we

mk/rustllvm.mk

@@ -17,7 +17,7 @@ rustllvm/$(CFG_RUSTLLVM): $(RUSTLLVM_OBJS_OBJS) \
 	$(Q)$(call CFG_LINK_C,$@,$(RUSTLLVM_OBJS_OBJS) \
 	  $(CFG_GCCISH_PRE_LIB_FLAGS) $(CFG_LLVM_LIBS) \
           $(CFG_GCCISH_POST_LIB_FLAGS) \
-          $(CFG_LLVM_LDFLAGS),$(RUSTLLVM_DEF))
+          $(CFG_LLVM_LDFLAGS),$(RUSTLLVM_DEF),$(CFG_RUSTLLVM))
 
 rustllvm/%.o: rustllvm/%.cpp $(MKFILES)
 	@$(call E, compile: $@)

src/comp/back/link.rs

@@ -567,6 +567,13 @@ fn link_binary(sess: session::session,
 
     if sess.get_opts().library {
         gcc_args += [lib_cmd];
+
+        // On mac we need to tell the linker to let this library
+        // be rpathed
+        if sess.get_targ_cfg().os == session::os_macos {
+            gcc_args += ["-Wl,-install_name,@rpath/"
+                        + fs::basename(saved_out_filename)];
+        }
     } else {
         // FIXME: why do we hardcode -lm?
         gcc_args += ["-lm", main];