crosstool-ng: patches/glibc/ports-2.10.1/180-resolv-dynamic.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 ripped from SuSE

     3 if /etc/resolv.conf is updated, then make sure applications

     4 already running get the updated information.

     6 http://bugs.gentoo.org/177416

     8 diff -durN glibc-2.10.1.orig/resolv/res_libc.c glibc-2.10.1/resolv/res_libc.c

     9 --- glibc-2.10.1.orig/resolv/res_libc.c	2009-02-07 05:27:42.000000000 +0100

    10 +++ glibc-2.10.1/resolv/res_libc.c	2009-11-13 00:49:59.000000000 +0100

    11 @@ -22,6 +22,7 @@

    12  #include <arpa/nameser.h>

    13  #include <resolv.h>

    14  #include <bits/libc-lock.h>

    15 +#include <sys/stat.h>

    18  /* The following bit is copied from res_data.c (where it is #ifdef'ed

    19 @@ -95,6 +96,20 @@

    20  __res_maybe_init (res_state resp, int preinit)

    21  {

    22  	if (resp->options & RES_INIT) {

    23 +		static time_t last_mtime, last_check;

    24 +		time_t now;

    25 +		struct stat statbuf;

    26 +

    27 +		time (&now);

    28 +		if (now != last_check) {

    29 +			last_check = now;

    30 +			if (stat (_PATH_RESCONF, &statbuf) == 0 && last_mtime != statbuf.st_mtime) {

    31 +				last_mtime = statbuf.st_mtime;

    32 +				atomicinclock (lock);

    33 +				atomicinc (__res_initstamp);

    34 +				atomicincunlock (lock);

    35 +			}

    36 +		}

    37  		if (__res_initstamp != resp->_u._ext.initstamp) {

    38  			if (resp->nscount > 0)

    39  				__res_iclose (resp, true);

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