crosstool-ng: kconfig/kconfig.mk@a70abdbfa342

complibs/cloog: fix linking with libm

In Ubuntu 11.04 and 11.10, the default options for ld have changed.
--no-copy-dt-needed-entries and --as-needed are now enabled by default, which
causes errors like:

[EXTRA] Checking CLooG/ppl
[DEBUG] ==> Executing: 'make' '-j3' '-s' 'check'
[ALL ] Making check in .
[ALL ] config.status: creating include/cloog/cloog-config.h
[ALL ] config.status: include/cloog/cloog-config.h is unchanged
[ALL ] libtool: link: i686-build_pc-linux-gnu-gcc -Wall -fomit-frame-pointer
-pipe -o cloog cloog.o -L/<snip>/build/static/lib ./.libs/libcloog.a -lm
/<snip>/build/static/lib/libppl_c.a /<snip>/build/static/lib/libpwl.a
/<snip>/build/static/lib/libppl.a /<snip>/build/static/lib/libgmpxx.a
/<snip>/build/static/lib/libgmp.a -lstdc++
[ALL ] /usr/bin/ld: /<snip>/build/static/lib/libppl.a(MIP_Problem.o):
undefined reference to symbol 'sqrt@@GLIBC_2.0'
[ALL ] /usr/bin/ld: note: 'sqrt@@GLIBC_2.0' is defined in DSO
/usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so so try adding
it to the linker command line
[ALL ] /usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so:
could not read symbols: Invalid operation
[ALL ] collect2: ld returned 1 exit status
[ERROR] make[2]: *** [cloog] Error 1
[ERROR] make[1]: *** [check-recursive] Error 1

See:
https://wiki.ubuntu.com/NattyNarwhal/ToolchainTransition

This patch fixes these errors by placing '-lm' at the right place on the command
line as libppl requires libm when linking cloog.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>

     1 # ===========================================================================

     2 # crosstool-NG configuration targets

     3 # These targets are used from top-level makefile

     5 #-----------------------------------------------------------

     6 # The configurators rules

     8 configurators = menuconfig nconfig oldconfig

     9 PHONY += $(configurators)

    11 $(configurators): config_files

    13 CONF  := $(CT_LIB_DIR)/kconfig/conf

    14 MCONF := $(CT_LIB_DIR)/kconfig/mconf

    15 NCONF := $(CT_LIB_DIR)/kconfig/nconf

    17 menuconfig:

    18 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

    19 	$(SILENT)$(MCONF) $(KCONFIG_TOP)

    21 nconfig:

    22 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

    23 	$(SILENT)$(NCONF) $(KCONFIG_TOP)

    25 oldconfig: .config

    26 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

    27 	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)

    29 # Always be silent, the stdout an be >.config

    30 extractconfig:

    31 	@awk 'BEGIN { dump=0; }                                                 \

    32 	      dump==1 && $$0~/^\[.....\][[:space:]]+(# |)CT_/ {                 \

    33 	          $$1="";                                                       \

    34 	          gsub("^[[:space:]]","");                                      \

    35 	          print;                                                        \

    36 	      }                                                                 \

    37 	      $$0~/Dumping user-supplied crosstool-NG configuration: done in/ { \

    38 	          dump=0;                                                       \

    39 	      }                                                                 \

    40 	      $$0~/Dumping user-supplied crosstool-NG configuration$$/ {        \

    41 	          dump=1;                                                       \

    42 	      }'

    44 #-----------------------------------------------------------

    45 # Help text used by make help

    47 help-config::

    48 	@echo  '  menuconfig         - Update current config using a menu based program'

    49 	@echo  '  oldconfig          - Update current config using a provided .config as base'

    50 	@echo  '  extractconfig      - Extract to stdout the configuration items from a'

    51 	@echo  '                       build.log file piped to stdin'

author	"Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
	Fri Jan 27 13:31:16 2012 +0100 (2012-01-27)
changeset 2854	a70abdbfa342
parent 2650	4d299836e994
child 2981	80151a249b85
child 3006	1c9e4e6a6922
permissions	-rw-r--r--