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kconfig/Makefile
author Daniel Price <daniel.price@gmail.com>
Tue Nov 20 16:59:17 2012 -0800 (2012-11-20)
changeset 3126 333d3e40cbd1
parent 2998 7b1dda3ab075
child 3231 69f5dc1ff327
permissions -rw-r--r--
scripts: refine static linking check to better guide the user

The current mechanism to check if static linking is possible, and the mesage
displayed on failure, can be puzzling to the unsuspecting user.

Also, the current implementation is not using the existing infrastructure,
and is thus difficult to enhance with new tests.

So, switch to using the standard CT_DoExecLog infra, and use four tests to
check for the host compiler:
- check we can run it
- check it can build a trivial program
- check it can statically link that program
- check if it statically link with libstdc++

That should cover most of the problems. Hopefully.

(At the same time, fix a typo in a comment)

Signed-off-by: Daniel Price <daniel.price@gmail.com>
[yann.morin.1998@free.fr: split original patch for self-contained changes]
[yann.morin.1998@free.fr: use steps to better see gcc's output]
[yann.morin.1998@free.fr: commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <163f86b5216fc08c672a.1353459722@nipigon.dssd.com>
Patchwork-Id: 200536 
     1 #-----------------------------------------------------------

     2 # Hmmm! Cheesy build!

     3 # Or: where I can unveil my make-fu... :-]

     4 

     5 all: conf mconf nconf

     6 	@true   # Just be silent, you fscking son of a fscking beach...

     7 

     8 # Build flags

     9 CFLAGS = -DCONFIG_=\"CT_\" -DPACKAGE="\"crosstool-NG $(VERSION)\""

    10 LDFLAGS =

    11 

    12 # Compiler flags to use gettext

    13 ifeq ($(gettext),)

    14 INTL_CFLAGS = -DKBUILD_NO_NLS

    15 endif

    16 

    17 # Compiler and linker flags to use ncurses

    18 NCURSES_CFLAGS = -DCURSES_LOC="\"$(curses_hdr)\""

    19 NCURSES_LDFLAGS = $(LIBS)

    20 

    21 # Common source files

    22 COMMON_SRC = zconf.tab.c

    23 COMMON_OBJ = $(patsubst %.c,%.o,$(COMMON_SRC))

    24 COMMON_DEP = $(patsubst %.o,%.dep,$(COMMON_OBJ))

    25 $(COMMON_OBJ) $(COMMON_DEP): CFLAGS += $(INTL_CFLAGS) -I.

    26 

    27 # lxdialog source files

    28 LX_SRC = $(wildcard lxdialog/*.c)

    29 LX_OBJ = $(patsubst %.c,%.o,$(LX_SRC))

    30 LX_DEP = $(patsubst %.o,%.dep,$(LX_OBJ))

    31 $(LX_OBJ) $(LX_DEP): CFLAGS += $(NCURSES_CFLAGS) $(INTL_CFLAGS)

    32 

    33 # What's needed to build 'conf'

    34 conf_SRC = conf.c

    35 conf_OBJ = $(patsubst %.c,%.o,$(conf_SRC))

    36 conf_DEP = $(patsubst %.o,%.dep,$(conf_OBJ))

    37 $(conf_OBJ) $(conf_DEP): CFLAGS += $(INTL_CFLAGS)

    38 

    39 # What's needed to build 'mconf'

    40 mconf_SRC = mconf.c

    41 mconf_OBJ = $(patsubst %.c,%.o,$(mconf_SRC))

    42 mconf_DEP = $(patsubst %.c,%.dep,$(mconf_SRC))

    43 $(mconf_OBJ) $(mconf_DEP): CFLAGS += $(NCURSES_CFLAGS) $(INTL_CFLAGS)

    44 mconf: LDFLAGS += $(NCURSES_LDFLAGS)

    45 

    46 # What's needed to build 'nconf'

    47 nconf_SRC = nconf.c nconf.gui.c

    48 nconf_OBJ = $(patsubst %.c,%.o,$(nconf_SRC))

    49 nconf_DEP = $(patsubst %.c,%.dep,$(nconf_SRC))

    50 $(nconf_OBJ) $(nconf_DEP): CFLAGS += $(INTL_CFLAGS) -I/usr/include/ncurses

    51 nconf: LDFLAGS += -lmenu -lpanel -lncurses

    52 

    53 # Under Cygwin, we need to auto-import some libs (which ones, exactly?)

    54 # for mconf and nconf to lin properly.

    55 ifeq ($(shell uname -o 2>/dev/null || echo unknown),Cygwin)

    56 mconf: LDFLAGS += -Wl,--enable-auto-import

    57 nconf: LDFLAGS += -Wl,--enable-auto-import

    58 endif

    59 

    60 # These are generated files:

    61 ALL_OBJS = $(sort $(COMMON_OBJ) $(LX_OBJ) $(conf_OBJ) $(mconf_OBJ) $(nconf_OBJ))

    62 ALL_DEPS = $(sort $(COMMON_DEP) $(LX_DEP) $(conf_DEP) $(mconf_DEP) $(nconf_DEP))

    63 

    64 # Cheesy auto-dependencies

    65 DEPS = $(COMMON_DEP)

    66 DEPS += $(conf_DEP)

    67 DEPS += $(mconf_DEP) $(LX_DEP)

    68 DEPS += $(nconf_DEP)

    69 -include $(DEPS)

    70 

    71 # Build the dependency for C files

    72 %.dep: %.c

    73 	@echo "  DEP    '$@'"

    74 	@$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -MM $< |$(sed) -r -e 's|([^:]+.o)( *:+)|$(<:.c=.o) $@\2|;' >$@

    75 

    76 # Generate the grammar parser

    77 zconf.tab.o: zconf.tab.c zconf.hash.c lex.zconf.c

    78 zconf.tab.dep: zconf.tab.c zconf.hash.c lex.zconf.c

    79 

    80 .PRECIOUS: zconf.tab.c

    81 zconf.tab.c: zconf.y

    82 	@echo "  BISON  '$@'"

    83 	@bison -l -b zconf -p zconf $<

    84 

    85 zconf.hash.c: zconf.gperf

    86 	@echo "  GPERF  '$@'"

    87 	@gperf < $< > $@

    88 

    89 lex.zconf.c: zconf.l

    90 	@echo "  LEX    '$@'"

    91 	@flex -L -Pzconf -o$@ $<

    92 

    93 # Build C files

    94 %.o: %.c

    95 	@echo "  CC     '$@'"

    96 	@$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -o $@ -c $<

    97 

    98 # Actual link

    99 mconf: $(COMMON_OBJ) $(LX_OBJ) $(mconf_OBJ)

   100 	@echo "  LD     '$@'"

   101 	@$(CC) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)

   102 

   103 nconf: $(COMMON_OBJ) $(nconf_OBJ)

   104 	@echo "  LD     '$@'"

   105 	@$(CC) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)

   106 

   107 conf: $(COMMON_OBJ) $(conf_OBJ)

   108 	@echo "  LD     '$@'"

   109 	@$(CC) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)

   110 

   111 #-----------------------------------------------------------

   112 # Cleaning up the mess...

   113 

   114 clean:

   115 	@echo "  RM     'kconfig'"

   116 	@rm -f conf mconf nconf $(ALL_OBJS) $(ALL_DEPS)

   117 	@rm -f rm -f zconf.tab.c zconf.hash.c lex.zconf.c lex.backup
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