build: GCC=1, win image-version=0,1, rm RDLLFLAGS

more buildsystem fixes: on win32 set -Wl,--major-image-version,0,--minor-image-version,1
on darwin replace unused RDLLFLAGS with LDDLLFLAGS
set GCC and ICC config.inc values

Makefile

@@ -450,7 +450,7 @@ lib/potion/buffile${LOADEXT}: core/config.h core/potion.h \
   lib/buffile.${OPIC} lib/buffile.c lib/libpotion${DLL}
 	@${ECHO} LD $@
 	@${LIBPNA_AWAY}
-	@${CC} $(DEBUGFLAGS) -o $@ ${LDDLLFLAGS}  ${RPATH} \
+	@${CC} $(DEBUGFLAGS) -o $@ $(subst libpotion,buffile,${LDDLLFLAGS}) ${RPATH} \
 	  lib/buffile.${OPIC} ${LIBPTH} -lpotion ${LIBS} > /dev/null
 	@${LIBPNA_BACK}
 

config.mak

@@ -18,6 +18,8 @@ DEBUG ?= 0
 WIN32  = 0
 CLANG  = 0
 JIT    = 0
+ICC    = 0
+GCC    = 0
 EXE    =
 APPLE  = 0
 CYGWIN = 0
@@ -147,6 +149,7 @@ ifneq ($(shell ./tools/config.sh "${CC}" icc),0)
   endif
 else
 ifneq ($(shell ./tools/config.sh "${CC}" gcc),0)
+	GCC = 1
 	WARNINGS += -Wno-switch -Wno-unused-label
 	DEBUGFLAGS += --param ssp-buffer-size=1
   ifeq (${DEBUG},0)
@@ -177,8 +180,10 @@ endif
 
 CROSS = $(shell tools/config.sh "${CC}" cross)
 # cygwin is not WIN32. detect mingw target on cross
+# maybe parse versions from core/potion.h
 ifeq ($(shell tools/config.sh "${CC}" mingw),1)
 	WIN32 = 1
+	LDFLAGS += -Wl,--major-image-version,0,--minor-image-version,1
 	LDDLLFLAGS = -shared
 	EXE  = .exe
 	DLL  = .dll
@@ -214,6 +219,7 @@ ifeq ($(shell tools/config.sh "${CC}" mingw),1)
 else
 ifeq ($(shell tools/config.sh "${CC}" cygwin),1)
 	CYGWIN = 1
+	LDFLAGS += -Wl,--major-image-version,0,--minor-image-version,1
 	LDDLLFLAGS = -shared
 	LOADEXT = .dll
 	EXE  = .exe
@@ -224,7 +230,7 @@ ifeq ($(shell tools/config.sh "${CC}" apple),1)
 	DLL      = .dylib
 	LOADEXT  = .bundle
 	LDDLLFLAGS = -dynamiclib -undefined dynamic_lookup -fpic -Wl,-flat_namespace
-	RDLLFLAGS  = -install_name "@executable_path/../lib/libpotion${DLL}"
+	LDDLLFLAGS += -install_name "@executable_path/../lib/libpotion${DLL}"
 	RPATH =
 	RPATH_INSTALL =
 else
@@ -327,7 +333,7 @@ core/config.h: config.inc core/version.h tools/config.sh config.mak
 	@${CAT} core/version.h > core/config.h
 	@${MAKE} -s -f config.mak config.h.echo >> core/config.h
 
-#TODO: fix when git is not available
+# TODO: fix when git is not available
 core/version.h: $(shell git show-ref HEAD | ${SED} "s,^.* ,.git/,g")
 	@${ECHO} MAKE $@
 	@${ECHO} "/* created by ${MAKE} -f config.mak */" > core/version.h