Makefiles: disable a few warning categories and other switches when compiling

with clang to prevent spamming the output.

git-svn-id: https://svn.eduke32.com/eduke32@2159 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/Makefile

@@ -182,7 +182,9 @@ endif
 # PLATFORM SPECIFIC SETTINGS
 
 ifeq ($(PLATFORM),LINUX)
-    OURCFLAGS	+= -fno-pic
+    ifneq ($(CC),clang)
+        OURCFLAGS	+= -fno-pic
+    endif
     NASMFLAGS	+= -f elf
     LIBS		+= -lvorbisfile -lvorbis -logg
 endif

polymer/eduke32/Makefile.common

@@ -109,13 +109,21 @@ ifneq (0,$(DEBUGANYWAY))
     debug+=-ggdb
 endif
 
-W_NO_UNUSED_RESULT := $(shell echo '' | $(CC) -E -Wno-unused-result - 2>/dev/null && echo -Wno-unused-result)
-W_NO_UNUSED_RESULT := $(findstring -Wno-unused-result,$(W_NO_UNUSED_RESULT))
+ifneq ($(CC),clang)
+    W_NO_UNUSED_RESULT := $(shell echo '' | $(CC) -E -Wno-unused-result - 2>/dev/null && echo -Wno-unused-result)
+    W_NO_UNUSED_RESULT := $(findstring -Wno-unused-result,$(W_NO_UNUSED_RESULT))
+else
+    W_NO_UNUSED_RESULT :=
+endif
 
 BASECFLAGS=$(debug) -W -Wall -Wimplicit -Werror-implicit-function-declaration \
 	-funsigned-char -fno-strict-aliasing -DNO_GCC_BUILTINS -D_FORTIFY_SOURCE=2 \
 	$(F_JUMP_TABLES) $(W_NO_UNUSED_RESULT) $(ARCH) \
 	-Wextra	#-Wwrite-strings -Waddress -Wlogical-op
+ifeq ($(CC),clang)
+    BASECFLAGS+= -Wno-unused-value -Wno-parentheses
+endif
+
 ifneq (3,$(GCC_MAJOR))
 	BASECFLAGS+= -Wstrict-overflow=1
 endif

polymer/eduke32/build/Makefile.shared

@@ -24,7 +24,9 @@ ifeq (4,$(GCC_MAJOR))
     F_NO_STACK_PROTECTOR := -fno-stack-protector
     # there are some link-time issues with stack protectors, so make it possible to override
     F_STACK_PROTECTOR_ALL ?= -fstack-protector-all
-    F_JUMP_TABLES := -fjump-tables
+    ifneq ($(CC),clang)
+        F_JUMP_TABLES := -fjump-tables
+    endif
     M_TUNE_GENERIC := -mtune=generic
     M_STACKREALIGN := -mstackrealign
     L_SSP := -lssp