crosstool-ng: patches/gcc/4.3.2/330-unwind-for-uClibc.patch@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 diff -durN gcc-4.3.1.orig/gcc/config/t-linux-uclibc gcc-4.3.1/gcc/config/t-linux-uclibc

     2 --- gcc-4.3.1.orig/gcc/config/t-linux-uclibc	1970-01-01 01:00:00.000000000 +0100

     3 +++ gcc-4.3.1/gcc/config/t-linux-uclibc	2008-07-29 13:07:15.000000000 +0200

     4 @@ -0,0 +1,5 @@

     5 +# Remove glibc specific files added in t-linux

     6 +SHLIB_MAPFILES := $(filter-out $(srcdir)/config/libgcc-glibc.ver, $(SHLIB_MAPFILES))

7 +

     8 +# Use unwind-dw2-fde instead of unwind-dw2-fde-glibc

     9 +LIB2ADDEH := $(subst unwind-dw2-fde-glibc.c,unwind-dw2-fde.c,$(LIB2ADDEH))

    10 diff -durN gcc-4.3.1.orig/gcc/config.gcc gcc-4.3.1/gcc/config.gcc

    11 --- gcc-4.3.1.orig/gcc/config.gcc	2008-07-29 13:11:02.000000000 +0200

    12 +++ gcc-4.3.1/gcc/config.gcc	2008-07-29 13:10:05.000000000 +0200

    13 @@ -2651,6 +2651,12 @@

    14  	;;

    15  esac

    17 +# Rather than hook into each target, just do it after all the linux

    18 +# targets have been processed

    19 +case ${target} in

    20 +  *-linux-uclibc*) tm_defines="${tm_defines} USE_UCLIBC" ; tmake_file="${tmake_file} t-linux-uclibc";;

    21 +esac

    22 +

    23  case ${target} in

    24  i[34567]86-*-linux*aout* | i[34567]86-*-linux*libc1)

    25  	tmake_file="${tmake_file} i386/t-gmm_malloc"

author	"Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
	Fri Jan 27 13:31:16 2012 +0100 (2012-01-27)
changeset 2854	a70abdbfa342
parent 766	717efd8b78b4
permissions	-rw-r--r--