Makefile.in
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Thu May 26 22:51:03 2011 +0200 (2011-05-26)
changeset 2481 30644208c955
parent 2424 28092887b486
child 2505 f87f02b00cc7
permissions -rw-r--r--
configure: add possibility to set arbitrary variable in check_for

If check_for is able to find the required prog/inc/lib, allow it to
set an arbitrary variable to 'y'. This variable is then pushed down
to the kconfig definition.

For example:
has_or_abort prog=foobar kconfig=has_foobar

If foobar is available, it yields a kconfig variable defaulting to y:
config CONFIGURE_has_foobar
bool
default y

If foobar is missing, it yields a kconfig variable defaulting to n:
config CONFIGURE_has_foobar
bool

Thus it is possible to depends on that variabel to show/hide options:
config SOME_FEATURE
bool
prompt "Some feature"
depends on CONFIGURE_has_foobar

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 # Makefile.in for building crosstool-NG
     2 # This file serves as source for the ./configure operation
     3 
     4 # This series of test is here because GNU make 3.81 will *not* use MAKEFLAGS
     5 # to set additional flags in the current Makfile ( see:
     6 # http://savannah.gnu.org/bugs/?20501 ), although the make manual says it
     7 # should ( see: http://www.gnu.org/software/make/manual/make.html#Options_002fRecursion )
     8 # so we have to work it around by calling ourselves back if needed
     9 
    10 # So why do we need not to use the built rules and variables? Because we
    11 # need to generate scripts/crosstool-NG.sh from scripts/crosstool-NG.sh.in
    12 # and there is a built-in implicit rule '%.sh:' that has neither a pre-requisite
    13 # nor a command associated, and that built-in implicit rule takes precedence
    14 # over our non-built-in implicit rule '%: %.in', below.
    15 
    16 # CT_MAKEFLAGS will be used later, below...
    17 
    18 # Do not print directories as we descend into them
    19 ifeq ($(filter --no-print-directory,$(MAKEFLAGS)),)
    20 CT_MAKEFLAGS += --no-print-directory
    21 endif
    22 
    23 # Use neither builtin rules, nor builtin variables
    24 # Note: dual test, because if -R and -r are given on the command line
    25 # (who knows?), MAKEFLAGS contains 'Rr' instead of '-Rr', while adding
    26 # '-Rr' to MAKEFLAGS adds it literaly ( and does not add 'Rr' )
    27 ifeq ($(filter Rr,$(MAKEFLAGS)),)
    28 ifeq ($(filter -Rr,$(MAKEFLAGS)),)
    29 CT_MAKEFLAGS += -Rr
    30 endif # No -Rr
    31 endif # No Rr
    32 
    33 # Remove any suffix rules
    34 .SUFFIXES:
    35 
    36 all: Makefile build
    37 
    38 ###############################################################################
    39 # Configuration variables
    40 
    41 VERSION:= @@VERSION@@
    42 BINDIR := @@BINDIR@@
    43 LIBDIR := @@LIBDIR@@
    44 DOCDIR := @@DOCDIR@@
    45 MANDIR := @@MANDIR@@
    46 DATE   := @@DATE@@
    47 LOCAL  := @@LOCAL@@
    48 
    49 # Paths found by ./configure
    50 install:= @@install@@
    51 bash   := @@bash@@
    52 grep   := @@grep@@
    53 make   := @@make@@
    54 sed    := @@sed@@
    55 libtool:= @@libtool@@
    56 objcopy:= @@objcopy@@
    57 objdump:= @@objdump@@
    58 readelf:= @@readelf@@
    59 patch  := @@patch@@
    60 
    61 # config options to push down to kconfig
    62 KCONFIG:= @@KCONFIG@@
    63 
    64 ###############################################################################
    65 # Non-configure variables
    66 MAN_SECTION := 1
    67 MAN_SUBDIR := /man$(MAN_SECTION)
    68 
    69 ###############################################################################
    70 # Sanity checks
    71 
    72 # Check if Makefile is up to date:
    73 Makefile: Makefile.in
    74 	@echo "$< did changed: you must re-run './configure'"
    75 	@false
    76 
    77 # If installing with DESTDIR, check it's an absolute path
    78 ifneq ($(strip $(DESTDIR)),)
    79   ifneq ($(DESTDIR),$(abspath /$(DESTDIR)))
    80     $(error DESTDIR is not an absolute PATH: '$(DESTDIR)')
    81   endif
    82 endif
    83 
    84 ###############################################################################
    85 # Global make rules
    86 
    87 # If any extra MAKEFLAGS were added, re-run ourselves
    88 # See top of file for an explanation of why this is needed...
    89 ifneq ($(strip $(CT_MAKEFLAGS)),)
    90 
    91 MAKEFLAGS += $(CT_MAKEFLAGS)
    92 build install clean distclean uninstall:
    93 	@$(MAKE) $@
    94 
    95 else
    96 # There were no additional MAKEFLAGS to add, do the job
    97 
    98 TARGETS := bin lib doc man
    99 
   100 build: $(patsubst %,build-%,$(TARGETS))
   101 
   102 install: build real-install
   103 
   104 clean: $(patsubst %,clean-%,$(TARGETS))
   105 
   106 distclean: clean
   107 	@echo "  RM     'Makefile'"
   108 	@rm -f Makefile
   109 
   110 uninstall: real-uninstall
   111 
   112 ###############################################################################
   113 # Specific make rules
   114 
   115 #--------------------------------------
   116 # Build rules
   117 
   118 build-bin: ct-ng scripts/crosstool-NG.sh scripts/saveSample.sh scripts/showTuple.sh
   119 	@chmod 755 $^
   120 
   121 build-lib: paths.mk config/configure.in
   122 
   123 build-doc:
   124 
   125 build-man: docs/ct-ng.1.gz
   126 
   127 docs/ct-ng.1.gz: docs/ct-ng.1
   128 	@echo "  GZIP   '$@'"
   129 	@gzip -c9 $< >$@
   130 
   131 %: %.in Makefile
   132 	@echo "  SED    '$@'"
   133 	@$(sed) -r -e 's,@@CT_BINDIR@@,$(BINDIR),g;'    \
   134 	           -e 's,@@CT_LIBDIR@@,$(LIBDIR),g;'    \
   135 	           -e 's,@@CT_DOCDIR@@,$(DOCDIR),g;'    \
   136 	           -e 's,@@CT_MANDIR@@,$(MANDIR),g;'    \
   137 	           -e 's,@@CT_VERSION@@,$(VERSION),g;'	\
   138 	           -e 's,@@CT_DATE@@,$(DATE),g;'        \
   139 	           -e 's,@@CT_make@@,$(make),g;'        \
   140 	           -e 's,@@CT_bash@@,$(bash),g;'        \
   141 	           $@.in >$@
   142 
   143 # We create a script fragment that is parseable from inside a Makefile,
   144 # but also from inside a shell script, hence the reason why we don't
   145 # use := to set variables, although that will incur a (very small)
   146 # penalty from the Makefile that includes it (due to re-evaluation at
   147 # each call).
   148 paths.mk: FORCE
   149 	@echo "  GEN    '$@'"
   150 	@(echo "export install=$(install)"; \
   151 	  echo "export bash=$(bash)";       \
   152 	  echo "export grep=$(grep)";       \
   153 	  echo "export make=$(make)";       \
   154 	  echo "export sed=$(sed)";         \
   155 	  echo "export libtool=$(libtool)"; \
   156 	  echo "export objcopy=$(objcopy)"; \
   157 	  echo "export objdump=$(objdump)"; \
   158 	  echo "export readelf=$(readelf)"; \
   159 	  echo "export patch=$(patch)";     \
   160 	 ) >paths.mk
   161 
   162 config/configure.in: FORCE
   163 	@echo "  GEN    '$@'"
   164 	@{  printf "# Generated file, do not edit\n";            \
   165 	    printf "# Default values as found by ./configure\n"; \
   166 	    for var in $(KCONFIG); do                            \
   167 	        printf "\n";                                     \
   168 	        printf "config CONFIGURE_$${var%%=*}\n";         \
   169 	        printf "    bool\n";                             \
   170 	        if [ "$${var#*=}" = "y" ]; then                  \
   171 	            printf "    default y\n";                    \
   172 	        fi;                                              \
   173 	    done;                                                \
   174 	 } >$@
   175 
   176 FORCE:
   177 
   178 #--------------------------------------
   179 # Clean rules
   180 
   181 clean-bin:
   182 	@echo "  RM     'ct-ng'"
   183 	@rm -f ct-ng
   184 	@echo "  RM     'scripts/crosstool-NG.sh'"
   185 	@rm -f scripts/crosstool-NG.sh
   186 	@echo "  RM     'scripts/saveSample.sh'"
   187 	@rm -f scripts/saveSample.sh
   188 	@echo "  RM     'scripts/showTuple.sh'"
   189 	@rm -f scripts/showTuple.sh
   190 
   191 clean-lib:
   192 	@echo "  RM     'paths.mk'"
   193 	@rm -f paths.mk
   194 	@echo "  RM     'config/configure.in'"
   195 	@rm -f config/configure.in
   196 
   197 clean-doc:
   198 
   199 clean-man:
   200 	@echo "  RM     'docs/ct-ng.1'"
   201 	@rm -f docs/ct-ng.1
   202 	@echo "  RM     'docs/ct-ng.1.gz'"
   203 	@rm -f docs/ct-ng.1.gz
   204 
   205 #--------------------------------------
   206 # Check for --local setup
   207 
   208 ifeq ($(strip $(LOCAL)),y)
   209 
   210 real-install:
   211 	@true
   212 
   213 real-uninstall:
   214 	@true
   215 
   216 else
   217 
   218 #--------------------------------------
   219 # Install rules
   220 
   221 real-install: $(patsubst %,install-%,$(TARGETS)) install-post
   222 
   223 install-bin: $(DESTDIR)$(BINDIR)
   224 	@echo "  INST    'ct-ng'"
   225 	@$(install) -m 755 ct-ng "$(DESTDIR)$(BINDIR)/ct-ng"
   226 
   227 # If one is hacking crosstool-NG, the patch set might change between any two
   228 # installations of the same VERSION, thus the patches must be removed prior
   229 # to being installed. It is simpler to remove the whole lib/ directory, as it
   230 # is the goal of the install-lib rule to install the lib/ directory...
   231 install-lib: uninstall-lib $(DESTDIR)$(LIBDIR) install-lib-main install-lib-samples
   232 
   233 LIB_SUB_DIR := config contrib kconfig patches scripts
   234 $(patsubst %,install-lib-%-copy,$(LIB_SUB_DIR)): $(DESTDIR)$(LIBDIR)
   235 	@echo "  INSTDIR '$(patsubst install-lib-%-copy,%,$(@))/'"
   236 	@tar cf - --exclude='*.sh.in' $(patsubst install-lib-%-copy,%,$(@)) \
   237 	 |(cd "$(DESTDIR)$(LIBDIR)"; tar xf -)
   238 
   239 # Huh? It seems we need at least one command to make this rule kick-in.
   240 install-lib-%: install-lib-%-copy; @true
   241 
   242 # Huh? that one does not inherit the -opy dependency, above...
   243 install-lib-scripts: install-lib-scripts-copy
   244 	@chmod a+x $(DESTDIR)$(LIBDIR)/scripts/crosstool-NG.sh
   245 	@chmod a+x $(DESTDIR)$(LIBDIR)/scripts/saveSample.sh
   246 	@rm -f "$(DESTDIR)$(LIBDIR)/scripts/addToolVersion.sh"
   247 
   248 install-lib-main: $(DESTDIR)$(LIBDIR) $(patsubst %,install-lib-%,$(LIB_SUB_DIR))
   249 	@echo "  INST    'steps.mk'"
   250 	@$(install) -m 644 steps.mk "$(DESTDIR)$(LIBDIR)/steps.mk"
   251 	@echo "  INST    'paths.mk'"
   252 	@$(install) -m 644 paths.mk "$(DESTDIR)$(LIBDIR)/paths.mk"
   253 
   254 # Samples need a little love:
   255 #  - change every occurrence of CT_TOP_DIR to CT_LIB_DIR
   256 install-lib-samples: $(DESTDIR)$(LIBDIR) install-lib-main
   257 	@echo "  INSTDIR 'samples/'"
   258 	@for samp_file in samples/*/crosstool.config; do                        \
   259 	     mkdir -p "$(DESTDIR)$(LIBDIR)/$${samp_file%/*}";                   \
   260 	     $(sed) -r -e 's:\$$\{CT_TOP_DIR\}:\$$\{CT_LIB_DIR\}:;'             \
   261 	               -e 's:^(CT_WORK_DIR)=.*:\1="\$${CT_TOP_DIR}/.build":;'   \
   262 	            $${samp_file}                                               \
   263 	            >"$(DESTDIR)$(LIBDIR)/$${samp_file}";                       \
   264 	 done
   265 	@$(install) -m 644 samples/samples.mk "$(DESTDIR)$(LIBDIR)/samples/samples.mk"
   266 
   267 install-doc: $(DESTDIR)$(DOCDIR)
   268 	@echo "  INST    'docs/*.txt'"
   269 	@for doc_file in docs/*.txt; do                              \
   270 	     $(install) -m 644 "$${doc_file}" "$(DESTDIR)$(DOCDIR)"; \
   271 	 done
   272 
   273 install-man: $(DESTDIR)$(MANDIR)$(MAN_SUBDIR)
   274 	@echo "  INST    'ct-ng.1.gz'"
   275 	@$(install) -m 644 docs/ct-ng.1.gz "$(DESTDIR)$(MANDIR)$(MAN_SUBDIR)"
   276 
   277 $(sort $(DESTDIR)$(BINDIR) $(DESTDIR)$(LIBDIR) $(DESTDIR)$(DOCDIR) $(DESTDIR)$(MANDIR)$(MAN_SUBDIR)):
   278 	@echo "  MKDIR   '$@/'"
   279 	@$(install) -m 755 -d "$@"
   280 
   281 install-post:
   282 	@echo
   283 	@echo "For auto-completion, do not forget to install 'ct-ng.comp' into"
   284 	@echo "your bash completion directory (usually /etc/bash_completion.d)"
   285 
   286 #--------------------------------------
   287 # Uninstall rules
   288 
   289 real-uninstall: $(patsubst %,uninstall-%,$(TARGETS))
   290 
   291 uninstall-bin:
   292 	@echo "  RM      '$(DESTDIR)$(BINDIR)/ct-ng'"
   293 	@rm -f "$(DESTDIR)$(BINDIR)/ct-ng"
   294 
   295 uninstall-lib:
   296 	@echo "  RMDIR   '$(DESTDIR)$(LIBDIR)/'"
   297 	@rm -rf "$(DESTDIR)$(LIBDIR)"
   298 
   299 uninstall-doc:
   300 	@echo "  RMDIR   '$(DESTDIR)$(DOCDIR)/'"
   301 	@rm -rf "$(DESTDIR)$(DOCDIR)"
   302 
   303 uninstall-man:
   304 	@echo "  RM      '$(DESTDIR)$(MANDIR)$(MAN_SUBDIR)/ct-ng.1.gz'"
   305 	@rm -f "$(DESTDIR)$(MANDIR)$(MAN_SUBDIR)/ct-ng.1"{,.gz}
   306 
   307 endif # Not --local
   308 
   309 endif # No extra MAKEFLAGS were added