tools: replace INCDIR to Makefile variable

In the past, header file paths were generated by the incdir command
Now they are generated by concatenating environment variables

In this way, when executing makefile, no shell command will be executed,
it will improve the speed of executing makfile
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>

graphics/Makefile

@@ -25,7 +25,7 @@ include nxbe/Make.defs
 include nxmu/Make.defs
 include nxterm/Make.defs
 
-CFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)graphics}
+CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)graphics
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))
 COBJS = $(CSRCS:.c=$(OBJEXT))

graphics/nxbe/Make.defs

@@ -40,5 +40,5 @@ CSRCS += nxbe_notify_rectangle.c
 endif
 
 DEPPATH += --dep-path nxbe
-CFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)/graphics/nxbe}
+CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)/graphics/nxbe
 VPATH += :nxbe

graphics/nxglib/Make.defs

@@ -96,6 +96,6 @@ CSRCS += nxglib_cursor_backup_24bpp.c nxglib_cursor_backup_32bpp.c
 endif
 
 DEPPATH += --dep-path nxglib
-CFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)/graphics/nxglib}
+CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)/graphics/nxglib
 #VPATH += :nxglib
 VPATH = nxglib

graphics/nxglib/Makefile.cursor

@@ -20,7 +20,7 @@
 
 include $(TOPDIR)/Make.defs
 
-CPPFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)graphics$(DELIM)nxglib}
+CPPFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)graphics$(DELIM)nxglib
 
 ifeq ($(NXGLIB_BITSPERPIXEL),8)
 NXGLIB_SUFFIX := _8bpp

graphics/nxglib/Makefile.devblit

@@ -20,7 +20,7 @@
 
 include $(TOPDIR)/Make.defs
 
-CPPFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)graphics$(DELIM)nxglib}
+CPPFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)graphics$(DELIM)nxglib
 
 ifeq ($(NXGLIB_BITSPERPIXEL),1)
 NXGLIB_SUFFIX	:= _1bpp

graphics/nxglib/Makefile.pwfb

@@ -20,7 +20,7 @@
 
 include $(TOPDIR)/Make.defs
 
-CPPFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)graphics$(DELIM)nxglib}
+CPPFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)graphics$(DELIM)nxglib
 
 ifeq ($(NXGLIB_BITSPERPIXEL),1)
 NXGLIB_SUFFIX	:= _1bpp

graphics/nxmu/Make.defs

@@ -24,5 +24,5 @@ CSRCS += nxmu_sendclient.c nxmu_sendclientwindow.c nxmu_server.c
 CSRCS += nxmu_start.c
 
 DEPPATH += --dep-path nxmu
-CFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)/graphics/nxmu}
+CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)/graphics/nxmu
 VPATH += :nxmu

graphics/nxterm/Make.defs

@@ -33,7 +33,7 @@ CSRCS += nxterm_kbdin.c
 endif
 
 DEPPATH += --dep-path nxterm
-CFLAGS += ${shell $(INCDIR) "$(CC)" $(TOPDIR)/graphics/nxterm}
+CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)/graphics/nxterm
 VPATH += :nxterm
 
 endif