Makefile.rump revision 1.57 
1#	$NetBSD: Makefile.rump,v 1.57 2010/05/11 21:08:07 pooka Exp $
2#
3
4WARNS?=		3	# XXX: src/sys won't compile with -Wsign-compare yet
5NOLINT=		# kernel code
6
7.include <bsd.own.mk>
8
9# If RUMPKMOD is _not_ set (only on capable archs, from bsd.own.mk),
10# use rump ABI instead of the NetBSD kernel ABI.
11.ifndef RUMPKMOD
12CPPFLAGS:=	-I${RUMPTOP}/include ${CPPFLAGS}
13CPPFLAGS+=	-D_RUMPKERNEL
14.else
15CPPFLAGS+=	-D_RUMP_NATIVE_ABI
16.endif
17
18CFLAGS+=	-ffreestanding -fno-strict-aliasing
19CWARNFLAGS+=	-Wno-format-zero-length -Wno-pointer-sign
20CPPFLAGS+=	-D_KERNEL -DMULTIPROCESSOR -D_MODULE -DMODULAR
21CPPFLAGS+=	-DMAXUSERS=32
22CPPFLAGS+=	-DDIAGNOSTIC
23CPPFLAGS+=	-DCOMPAT_50
24CPPFLAGS+=	-DDEBUGPRINT
25CPPFLAGS+=	-I${.CURDIR} -I.
26CPPFLAGS+=	-I${RUMPTOP}/../../common/include -I${RUMPTOP}/../arch
27CPPFLAGS+=	-I${RUMPTOP}/include
28CPPFLAGS+=	-I${RUMPTOP}/librump/rumpkern/opt
29CPPFLAGS+=	-nostdinc -I${RUMPTOP}/..
30LDFLAGS+=	-T ${RUMPTOP}/ldscript.rump
31#CPPFLAGS+=	-DDEBUG
32
33# kernel libs should not get linked against libc
34# XXX: actually, we would like to enable this but cannot, since it
35# also leaves out libgcc, it causes problems on some platforms.
36# revisit some day.
37#LDFLAGS+=	-nodefaultlibs
38
39# make sure __NetBSD__ gets defined (for builds on non-NetBSD)
40CPPFLAGS+=	-D__NetBSD__
41
42RUMPKERNEL=	This is NetBSD and I am the rump.  Good evening.
43
44# workaround: evbppc is not a well-defined arch
45.if (${MACHINE} == "evbppc")
46CPPFLAGS+=	-DPPC_OEA
47.endif
48
49# If this file changes, we need a full rebuild
50DPSRCS+=	${RUMPTOP}/Makefile.rump
51
52#
53# Rename library symbols before use.  If a symbol does not already belong
54# to a rump namespace ("rump" or "RUMP"), prefix it with "rumpns".  This
55# avoids accidentally linking any kernel symbol against host platform
56# libraries.  The only non-renamed symbols are linkset delimiters and
57# the GOT, which are more a property of the compiler than the kernel.
58#
59# Some toolchains generate unresolved symbols which are supposed to be
60# satisfied by the toolchain itself when the program is linked.
61# Unfortunately, we do not know which of the symbols are generated by
62# the toolchain.  Worse, they vary from platform to platform and
63# toolchain to toolchain.  The good news, however, is that this will
64# be detected by a compile-time failure, so we can fairly easily manage
65# a quirktable here.
66#
67# We also allow calling ourselves externally with e.g.:
68# make -f /sys/rump/Makefile.rump RUMP_SYMREN=ffs.kobj
69#
70.if ${MACHINE_CPU} == "mips"
71_SYMQUIRK='|_gp_disp'
72.elif ${MACHINE_CPU} == "hppa"
73_SYMQUIRK='|\$$\$$'
74.elif ${MACHINE_ARCH} == "powerpc64"
75_SYMQUIRK="|PF_funcs"
76.endif
77
78#
79# Prefix quirks.  At least one toolchain generates global
80# symbols with prefixes which really need to remain as prefixes
81# (i.e. the '.' on the front of some ppc64 globals).  The
82# way to know if you have the problem is if you get later
83# complaints about symbols like 'rumpns_XrumpBLAH' or 'XrumpBLAH';
84# the 'X' part was added by the toolchain and will need to
85# be mentioned here.
86# 
87.if ${MACHINE_ARCH} == "powerpc64"
88_PQ="\.?"
89.else
90_PQ=
91.endif
92
93rump_symren: __archivebuild
94.if !defined(RUMP_SYMREN)
95	@echo "Must supply RUMP_SYMREN for target rump_symren"
96	@false
97.endif
98
99# if we are called from lib build (RUMP_SYMREN is not specified),
100# build the arrrrchive.  otherwise just rename symbols.
101__archivebuild: .USE
102.if defined(RUMP_SYMREN) && defined(RUMPTOP)
103	@echo "ERROR: RUMP_SYMREN can only be used standalone"
104	@false
105.endif
106.if defined(RUMP_SYMREN)
107	${_MKMSG} " symbol rename " ${RUMP_SYMREN}
108.else
109	${_MKTARGET_BUILD}
110	rm -f ${.TARGET}
111	${AR} ${_ARFL} ${.TARGET} `NM=${NM} ${LORDER} ${.ALLSRC:M*o} | ${TSORT}`
112.endif
113	${NM} -go ${RUMP_SYMREN:U${.TARGET}} | ${TOOL_AWK} '	\
114	    $$NF!~/^'${_PQ}'(rump|RUMP|__|_GLOBAL_OFFSET_TABLE'${_SYMQUIRK}')/ \
115	      {s = $$NF; sub(/^'${_PQ}'/, "&rumpns_", s); print $$NF, s}' \
116	    | sort | uniq  > renametab.${.TARGET}
117	${OBJCOPY} --preserve-dates --redefine-syms \
118	    renametab.${.TARGET} ${RUMP_SYMREN:U${.TARGET}}
119	rm -f renametab.${.TARGET}
120.if !defined(RUMP_SYMREN)
121	${AR} ${_ARRANFL} ${.TARGET}
122.endif
123
124_BSD_IOCONF_MK_USER_=1
125.include <bsd.ioconf.mk>
126
127.-include "${NETBSDSRCDIR}/sys/arch/${MACHINE_CPU}/include/Makefile.inc"
128.-include "${NETBSDSRCDIR}/sys/arch/${MACHINE}/include/Makefile.inc"
129