source: rtems/automake/compile.am @ baa8dd7c

4.104.114.84.9
Last change on this file since baa8dd7c was baa8dd7c, checked in by Ralf Corsepius <ralf.corsepius@…>, on Dec 6, 2002 at 1:07:15 PM

2002-12-06 Ralf Corsepius <corsepiu@…>

  • automake/compile.am: Rework *FLAGS, AM_*FLAGS handling.
  • Property mode set to 100644
File size: 5.9 KB
Line 
1##
2## $Id$
3##
4
5## -------------------------------------------------------------------------
6## NOTE: This file is rather immature and has to be considered to be
7## almost experimental.
8##
9## Expect frequent changes -- It deserves to be cleaned up :(
10## -------------------------------------------------------------------------
11
12## The section below is based on make/compilers/gcc-target-default.cfg
13## used in former versions of RTEMS.
14
15##
16## Set up the flags for the toolchains:
17##
18## We are considering 3 different building schemes here:
19## * Using gcc's being able to accept -specs (aka gcc-2.8 building scheme)
20## * Using gcc's not being able to accept -specs (aka gcc-2.7.2 building
21##   scheme)
22## * Using third party toolchains (aka non-gcc building scheme)
23##
24## Automake conditionals in use:
25## RTEMS_USE_GCC     .. if we are using GCC
26
27## NOTES:
28## * The gcc-2.8 building scheme is the nominal building scheme and
29##   is actively supported.
30## * The non-gcc building scheme requires manually setting up environment
31##   variables and is hardly tested at all
32
33## CFLAGS_OPTIMIZE_V, CFLAGS_DEBUG_V, CFLAGS_PROFILE_V are the values we
34## would want the corresponding macros to be set to.
35##
36## CFLAGS_OPTIMIZE, CFLAGS_DEBUG, CFLAGS_PROFILE are set by the
37## 'VARIANT=<OPTIMIZE|DEBUG|PROFILE>' targets to their _V values.
38
39## XCPPFLAGS, XCFLAGS, XCXXFLAGS, XASFLAGS
40## are used to add flags from the shell
41## cf. make.info ("Implicit rules/variables" for details)
42
43if RTEMS_USE_GCC
44## All the stuff below is specific to gcc
45
46## gcc >= 2.8.x
47GCCSPECS = $(GCC_SPECS) $(RTEMS_BSP_SPECS)
48else
49## fall back to the old style compilers/*.cfg
50## CONFIG.CC is supposed to be provided by <BSP>.cfg
51include $(CONFIG.CC)
52endif # RTEMS_USE_GCC
53
54DEFS = @DEFS@
55
56CPPFLAGS = @CPPFLAGS@ $(CPU_DEFINES) $(DEFINES) $(XCPPFLAGS)
57CFLAGS   = @RTEMS_CFLAGS@ $(XCFLAGS)
58CXXFLAGS = @RTEMS_CXXFLAGS@ $(XCXXFLAGS)
59ASFLAGS  = $(CPU_ASFLAGS) $(CPU_CFLAGS) $(XASFLAGS)
60
61LINK_LIBS = $(LD_LIBS)
62
63#
64# Client compiler and support tools
65#
66
67#
68# How to compile stuff into ${ARCH} subdirectory
69#
70
71COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
72        $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
73CCLD = $(CC)
74LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
75        $(AM_LDFLAGS) $(LDFLAGS) -o $@
76
77CXXCOMPILE = $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
78        $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)
79CXXLD = $(CXX)
80CXXLINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) \
81        $(AM_LDFLAGS) $(LDFLAGS) -o $@
82
83CCAS = $(CC)
84CCASCOMPILE = $(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)
85
86# OBSOLETE: Don't use
87AS = $(CC)
88ASCOMPILE = $(AS) $(AM_ASFLAGS) $(ASFLAGS)
89
90${ARCH}/%.o: %.c
91        test -d $(ARCH) || mkdir $(ARCH)
92        ${COMPILE} -o $@ -c $<
93
94${ARCH}/%.o: %.cc
95        test -d $(ARCH) || mkdir $(ARCH)
96        ${CXXCOMPILE} -o $@ -c $<
97
98${ARCH}/%.o: %.S
99        test -d $(ARCH) || mkdir $(ARCH)
100        ${CCASCOMPILE} -DASM -o $@ -c $<
101
102# Dependency files for use by gmake
103# NOTE: we don't put them into $(ARCH)
104#       so that 'make clean' doesn't blow it away
105
106DEPEND=Depends-${ARCH}
107
108CLEAN_DEPEND=$(DEPEND).tmp
109CLOBBER_DEPEND=$(DEPEND)
110
111# We deliberately don't have anything depend on the
112# $(DEPEND) file; otherwise it will get rebuilt even
113# on 'make clean'
114#
115
116## HACK: Specific to gcc
117## FIXME: The approach below is known to be conceptionally broken.
118depend-am: $(C_FILES) $(CC_FILES) $(S_FILES)
119##       Use gcc -M to generate dependencies
120##       Replace foo.o with $(ARCH)/foo.o
121##       Replace $(ARCH) value with string $(ARCH)
122##           so that it will for debug and profile cases
123        $(COMPILE) -M   $^    |  \
124        sed -e 's?^\(.*\)\.o[ ]*:?$$(ARCH)/\1.o:?' \
125            -e 's?$(ARCH)/?$$(ARCH)/?'   >$(DEPEND).tmp
126        mv $(DEPEND).tmp $(DEPEND)
127depend: depend-am
128
129# pull in dependencies if they exist 
130ifeq (${DEPEND},$(wildcard ${DEPEND}))
131include ${DEPEND}
132@ENDIF@
133
134
135# spell out all the LINK_FILE's, rather than using -lbsp, so
136#  that $(LINK_FILES) can be a dependency
137
138LINK_OBJS = \
139    $(OBJS) \
140    $(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel)
141
142LINK_FILES =\
143    $(START_FILE) \
144    $(OBJS) \
145    $(MANAGERS_NOT_WANTED:%=$(PROJECT_RELEASE)/lib/no-%$(LIB_VARIANT).rel)
146
147if RTEMS_USE_GCC
148## gcc >= 2.8
149define make-rel
150        $(LINK) -qnolinkcmds -nostdlib -Wl,-r $(XLDFLAGS) $^
151endef
152else
153## non-gcc
154define make-rel
155        $(LINK) $(XLDFLAGS) $^
156endef
157endif
158
159## -------------------------------------------------------------------------
160
161## translate VARIANT into VARIANT_V
162VARIANT = OPTIMIZE
163
164VARIANT_OPTIMIZE_V = OPTIMIZE
165VARIANT_DEBUG_V = DEBUG
166VARIANT_PROFILE_V = PROFILE
167VARIANT_optimize_V = OPTIMIZE
168VARIANT_debug_V = DEBUG
169VARIANT_profile_V = PROFILE
170
171VARIANT_V = $(VARIANT_$(VARIANT)_V)
172
173## Setup the variant build subdirectory
174ARCH_OPTIMIZE_V = o-optimize
175ARCH_DEBUG_V = o-debug
176ARCH_PROFILE_V = o-profile
177
178ARCH__V = $(ARCH_OPTIMIZE_V)
179ARCH = $(ARCH_$(VARIANT_V)_V)
180
181## Setup the library suffix
182LIBSUFFIX_OPTIMIZE_V =
183LIBSUFFIX_DEBUG_V = _g
184LIBSUFFIX_PROFILE_V = _p
185LIBSUFFIX__V = $(LIBSUFFIX_OPTIMIZE_V)
186
187LIB_VARIANT = $(LIBSUFFIX_$(VARIANT_V)_V)
188LIBSUFFIX_VA = $(LIB_VARIANT).a
189
190## These are supposed to be set in make/custom/<bsp>.cfg
191CPU_CFLAGS = @CPU_CFLAGS@
192CFLAGS_OPTIMIZE_V = @CFLAGS_OPTIMIZE_V@
193CFLAGS_DEBUG_V = @CFLAGS_DEBUG_V@
194CFLAGS_PROFILE_V = @CFLAGS_PROFILE_V@
195CFLAGS__V = $(CFLAGS_OPTIMIZE_V)
196
197## ------------------------------------------------------------------------
198## Setup hard-coded flags
199if RTEMS_USE_GCC
200## gcc >= gcc-2.8
201RTEMS_CFLAGS_OPTIMIZE_V =
202RTEMS_CFLAGS_DEBUG_V = -qrtems_debug -Wno-unused
203RTEMS_CFLAGS_PROFILE_V = -pg
204
205## non-gcc
206## We can't guess what flags might be required here.
207## Pass the values from the environment if you want to apply them.
208endif
209RTEMS_CFLAGS__V = $(RTEMS_CFLAGS_OPTIMIZE_V)
210
211## -------------------------------------------------------------------------
212
213CC = @CC@ $(GCCSPECS)
214CXX = @CXX@ $(GCCSPECS)
215CPP = @CPP@ $(GCCSPECS)
216
217LD = @LD@
218OBJCOPY = @OBJCOPY@
219NM = @NM@
220SIZE = @SIZE@
221STRIP = @STRIP@
222
223##
224AM_CPPFLAGS = $(RTEMS_CPPFLAGS)
225AM_CFLAGS =
226AM_CXXFLAGS =
227AM_CCASFLAGS = $(CPU_CFLAGS) $(RTEMS_CPPFLAGS) $(RTEMS_CCASFLAGS)
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