Fix some compiler warnings in the capstone makefile

shlr/capstone-patches/silent-cc-errors.patch

@@ -0,0 +1,31 @@
+diff --git a/Makefile b/Makefile
+index 034e254..09bd6c3 100644
+--- a/Makefile
++++ b/Makefile
+@@ -279,7 +279,7 @@ endif
+ API_MAJOR=$(shell echo `grep -e CS_API_MAJOR include/capstone/capstone.h | grep -v = | awk '{print $$3}'` | awk '{print $$1}')
+ VERSION_EXT =
+ 
+-IS_APPLE := $(shell $(CC) -dM -E - < /dev/null | grep __apple_build_version__ | wc -l | tr -d " ")
++IS_APPLE := $(shell $(CC) -dM -E - < /dev/null 2> /dev/null | grep __apple_build_version__ | wc -l | tr -d " ")
+ ifeq ($(IS_APPLE),1)
+ EXT = dylib
+ VERSION_EXT = $(API_MAJOR).$(EXT)
+@@ -296,7 +296,7 @@ endif
+ else
+ $(LIBNAME)_LDFLAGS += -shared
+ # Cygwin?
+-IS_CYGWIN := $(shell $(CC) -dumpmachine | grep -i cygwin | wc -l)
++IS_CYGWIN := $(shell $(CC) -dumpmachine 2>/dev/null | grep -i cygwin | wc -l)
+ ifeq ($(IS_CYGWIN),1)
+ EXT = dll
+ AR_EXT = lib
+@@ -305,7 +305,7 @@ CFLAGS := $(CFLAGS:-fPIC=)
+ # On Windows we need the shared library to be executable
+ else
+ # mingw?
+-IS_MINGW := $(shell $(CC) --version | grep -i mingw | wc -l)
++IS_MINGW := $(shell $(CC) --version 2>/dev/null | grep -i mingw | wc -l)
+ ifeq ($(IS_MINGW),1)
+ EXT = dll
+ AR_EXT = lib