Makefile.rump revision 1.63 
1#	$NetBSD: Makefile.rump,v 1.63 2012/08/10 16:05:27 joerg 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
19.if (defined(HAVE_GCC) && ${HAVE_GCC} >= 3) || defined(HAVE_LLVM)
20CFLAGS+=	-Wsign-compare
21CFLAGS+=	-Wno-pointer-sign -Wno-attributes
22CFLAGS+=	-std=gnu99
23.endif
24CWARNFLAGS+=	-Wno-format-zero-length -Wno-pointer-sign
25CPPFLAGS+=	-D_KERNEL -DMULTIPROCESSOR -D_MODULE -DMODULAR
26CPPFLAGS+=	-DMAXUSERS=32
27CPPFLAGS+=	-DCOMPAT_50=1
28CPPFLAGS+=	-DDEBUGPRINT
29CPPFLAGS+=	-I${.CURDIR} -I.
30CPPFLAGS+=	-I${RUMPTOP}/../../common/include -isystem ${RUMPTOP}/../arch
31CPPFLAGS+=	-I${RUMPTOP}/include
32CPPFLAGS+=	-I${RUMPTOP}/librump/rumpkern/opt
33CPPFLAGS+=	-nostdinc -isystem ${RUMPTOP}/..
34LDFLAGS+=	-T ${RUMPTOP}/ldscript.rump
35
36RUMP_DIAGNOSTIC?=yes
37.if ${RUMP_DIAGNOSTIC} == "yes"
38CPPFLAGS+=	-DDIAGNOSTIC
39.endif
40
41.ifdef RUMP_DEBUG
42CPPFLAGS+=	-DDEBUG
43.endif
44
45.ifdef RUMP_LOCKDEBUG
46CPPFLAGS+=	-DLOCKDEBUG
47.endif
48
49# kernel libs should not get linked against libc
50# XXX: actually, we would like to enable this but cannot, since it
51# also leaves out libgcc, it causes problems on some platforms.
52# revisit some day.
53#LDFLAGS+=	-nodefaultlibs
54
55# make sure __NetBSD__ gets defined (for builds on non-NetBSD)
56CPPFLAGS+=	-D__NetBSD__
57
58RUMPKERNEL=	This is NetBSD and I am the rump.  Good evening.
59
60# workaround: evbppc is not a well-defined arch
61.if (${MACHINE} == "evbppc")
62CPPFLAGS+=	-DPPC_OEA
63.endif
64
65# If this file changes, we need a full rebuild
66DPSRCS+=	${RUMPTOP}/Makefile.rump
67
68#
69# Rename library symbols before use.  If a symbol does not already belong
70# to a rump namespace ("rump" or "RUMP"), prefix it with "rumpns".  This
71# avoids accidentally linking any kernel symbol against host platform
72# libraries.  The only non-renamed symbols are linkset delimiters and
73# the GOT, which are more a property of the compiler than the kernel.
74#
75# Some toolchains generate unresolved symbols which are supposed to be
76# satisfied by the toolchain itself when the program is linked.
77# Unfortunately, we do not know which of the symbols are generated by
78# the toolchain.  Worse, they vary from platform to platform and
79# toolchain to toolchain.  The good news, however, is that this will
80# be detected by a compile-time failure, so we can fairly easily manage
81# a quirktable here.
82#
83# We also allow calling ourselves externally with e.g.:
84# make -f /sys/rump/Makefile.rump RUMP_SYMREN=ffs.kobj
85#
86.if ${MACHINE_CPU} == "mips"
87_SYMQUIRK='|_gp_disp'
88.elif ${MACHINE_CPU} == "hppa"
89_SYMQUIRK='|\$$\$$'
90.elif ${MACHINE_ARCH} == "powerpc64"
91_SYMQUIRK="|PF_funcs"
92.endif
93
94#
95# Prefix quirks.  At least one toolchain generates global
96# symbols with prefixes which really need to remain as prefixes
97# (i.e. the '.' on the front of some ppc64 globals).  The
98# way to know if you have the problem is if you get later
99# complaints about symbols like 'rumpns_XrumpBLAH' or 'XrumpBLAH';
100# the 'X' part was added by the toolchain and will need to
101# be mentioned here.
102# 
103.if ${MACHINE_ARCH} == "powerpc64"
104_PQ="\.?"
105.else
106_PQ=
107.endif
108
109rump_symren: __archivebuild
110.if !defined(RUMP_SYMREN)
111	@echo "Must supply RUMP_SYMREN for target rump_symren"
112	@false
113.endif
114
115# if we are called from lib build (RUMP_SYMREN is not specified),
116# build the arrrrchive.  otherwise just rename symbols.
117__archivebuild: .USE
118.if defined(RUMP_SYMREN) && defined(RUMPTOP)
119	@echo "ERROR: RUMP_SYMREN can only be used standalone"
120	@false
121.endif
122.if defined(RUMP_SYMREN)
123	${_MKMSG} " symbol rename " ${RUMP_SYMREN}
124.else
125	${_MKTARGET_BUILD}
126	rm -f ${.TARGET}
127	${AR} ${_ARFL} ${.TARGET} `NM=${NM} ${LORDER} ${.ALLSRC:M*o} | ${TSORT}`
128.endif
129	${NM} -go ${RUMP_SYMREN:U${.TARGET}} | ${TOOL_AWK} '	\
130	    $$NF!~/^'${_PQ}'(rump|RUMP|__|_GLOBAL_OFFSET_TABLE'${_SYMQUIRK}')/ \
131	      {s = $$NF; sub(/^'${_PQ}'/, "&rumpns_", s); print $$NF, s}' \
132	    | sort | uniq  > renametab.${.TARGET}
133	${OBJCOPY} --preserve-dates --redefine-syms \
134	    renametab.${.TARGET} ${RUMP_SYMREN:U${.TARGET}}
135	rm -f renametab.${.TARGET}
136.if !defined(RUMP_SYMREN)
137	${AR} ${_ARRANFL} ${.TARGET}
138.endif
139
140_BSD_IOCONF_MK_USER_=1
141.include <bsd.ioconf.mk>
142
143.-include "${NETBSDSRCDIR}/sys/arch/${MACHINE_CPU}/include/Makefile.inc"
144.-include "${NETBSDSRCDIR}/sys/arch/${MACHINE}/include/Makefile.inc"
145