remove build_h.jl dependency from inference.ji sysimg

Makefile

@@ -149,7 +149,6 @@ CORE_SRCS := base/boot.jl base/coreimg.jl \
 		base/abstractarray.jl \
 		base/array.jl \
 		base/bool.jl \
-		base/build_h.jl \
 		base/dict.jl \
 		base/error.jl \
 		base/essentials.jl \

base/Makefile

@@ -36,7 +36,6 @@ uv_constants.jl: ../src/uv_constants.h $(build_includedir)/uv-errno.h
 
 build_h.jl.phony:
 	@echo "# This file is automatically generated in base/Makefile" > $@
-	@$(CPP_STDOUT) build.h -I../src/support | grep . >> $@
 	@echo "const ARCH = :$(ARCH)" >> $@
 ifeq ($(XC_HOST),)
 	@echo "const MACHINE = \"$(BUILD_MACHINE)\"" >> $@

base/c.jl

@@ -4,6 +4,8 @@
 
 import Core.Intrinsics: cglobal, box, unbox
 
+const OS_NAME = ccall(:jl_get_OS_NAME, Any, ())
+
 cfunction(f::Function, r, a) = ccall(:jl_function_ptr, Ptr{Void}, (Any, Any, Any), f, r, a)
 
 if ccall(:jl_is_char_signed, Any, ())

base/coreimg.jl

@@ -20,7 +20,6 @@ print(a::ANY...) = for x=a; print(x); end
 ## Load essential files and libraries
 include("essentials.jl")
 include("reflection.jl")
-include("build_h.jl")
 include("options.jl")
 
 # core operations & types

src/sys.c

@@ -657,6 +657,22 @@ DLLEXPORT void jl_raise_debugger(void)
 #endif // _OS_WINDOWS_
 }
 
+DLLEXPORT jl_sym_t* jl_get_OS_NAME()
+{
+#if defined(_OS_WINDOWS_)
+    return jl_symbol("Windows");
+#elif defined(_OS_LINUX_)
+    return jl_symbol("Linux");
+#elif defined(_OS_FREEBSD_)
+    return jl_symbol("FreeBSD");
+#elif defined(_OS_DARWIN_)
+    return jl_symbol("Darwin");
+#else
+#warning OS_NAME is Unknown
+    return jl_symbol("Unknown");
+#endif
+}
+
 #ifdef __cplusplus
 }
 #endif