Re: [LTP] Realtime test failure

["Mitani" <mitani@ryobi.co.jp>]

> -----Original Message-----
> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> Sent: Wednesday, November 17, 2010 12:17 PM
> To: Mitani
> Cc: ltp-list@lists.sourceforge.net
> Subject: Re: [LTP] Realtime test failure
> 
> On Tue, Nov 16, 2010 at 6:59 PM, Mitani <mitani@ryobi.co.jp> wrote:
> >> -----Original Message-----
> >> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> >> Sent: Wednesday, November 17, 2010 2:04 AM
> >> To: Mitani
> >> Cc: ltp-list@lists.sourceforge.net
> >> Subject: Re: [LTP] Realtime test failure
> >>
> >> On Tue, Nov 16, 2010 at 12:28 AM, Mitani <mitani@ryobi.co.jp> wrote:
> >> >> -----Original Message-----
> >> >> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> >> >> Sent: Tuesday, November 16, 2010 12:58 AM
> >> >> To: Mitani
> >> >> Cc: ltp-list@lists.sourceforge.net
> >> >> Subject: Re: [LTP] Realtime test failure
> >> >>
> >> >> On Sun, Nov 14, 2010 at 10:29 PM, Mitani <mitani@ryobi.co.jp> wrote:
> >> >> >
> >> >> >
> >> >> >> -----Original Message-----
> >> >> >> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> >> >> >> Sent: Monday, November 15, 2010 2:20 PM
> >> >> >> To: Mitani
> >> >> >> Cc: ltp-list@lists.sourceforge.net; 當座 健市
> >> >> >> Subject: Re: [LTP] Realtime test failure
> >> >> >>
> >> >> >> 2010/11/14 Mitani <mitani@ryobi.co.jp>:
> >> >> >> >> -----Original Message-----
> >> >> >> >> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> >> >> >> >> Sent: Monday, November 15, 2010 12:03 PM
> >> >> >> >> To: Mitani
> >> >> >> >> Subject: Re: [LTP] Realtime test failure
> >> >> >> >>
> >> >> >> >> On Sun, Nov 14, 2010 at 6:54 PM, Mitani <mitani@ryobi.co.jp>
> >> wrote:
> >> >> >> >> > Hi,
> >> >> >> >> >
> >> >> >> >> > "realtime" build failed in my system with git
> >> "ltp-f388d33.tar.gz":
> >> >> >> >> > ------------<RHEL4.8 - x86>
> >> >> >> >> > make[2]: Entering directory
> >> >> >> >> `/home/LTP/ltp-dev-20101112/testcases/realtime'
> >> >> >> >> > make -C lib -f
> >> >> >> >>
> "/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
> >> >> >> >> > all
> >> >> >> >> > make[3]: Entering directory
> >> >> >> >> > `/home/LTP/ltp-dev-20101112/testcases/realtime/lib'
> >> >> >> >> > gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
> -D_GNU_SOURCE
> >> >> >> >> >
> >> -I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
> >> >> >> >> > -I../../../include -I../../../include  -c -o librttest.o
> >> >> >> librttest.c
> >> >> >> >> > In file included from librttest.c:43:
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
> >> >> >> >> st.h: In
> >> >> >> >> > function `atomic_add':
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
> >> >> >> >> st.h:119
> >> >> >> >> > : warning: implicit declaration of function
> >> `__sync_add_and_fetch'
> >> >> >> >> > gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
> -D_GNU_SOURCE
> >> >> >> >> >
> >> -I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
> >> >> >> >> > -I../../../include -I../../../include  -c -o libstats.o
> >> >> libstats.c
> >> >> >> >> > In file included from libstats.c:47:
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
> >> >> >> >> st.h: In
> >> >> >> >> > function `atomic_add':
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
> >> >> >> >> st.h:119
> >> >> >> >> > : warning: implicit declaration of function
> >> `__sync_add_and_fetch'
> >> >> >> >> > if [ -z "librttest.o libstats.o" ] ; then \
> >> >> >> >> >        echo "Cowardly refusing to create empty archive";
> \
> >> >> >> >> >        exit 1; \
> >> >> >> >> > fi
> >> >> >> >> > ar -rc "librealtime.a" librttest.o libstats.o
> >> >> >> >> > ranlib "librealtime.a"
> >> >> >> >> > make[3]: Leaving directory
> >> >> >> >> > `/home/LTP/ltp-dev-20101112/testcases/realtime/lib'
> >> >> >> >> > make[3]: Entering directory
> >> >> >> >> > `/home/LTP/ltp-dev-20101112/testcases/realtime/func'
> >> >> >> >> > make[4]: Entering directory
> >> >> >> >> >
> >> >> >>
> >> `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
> >> >> >> >> > gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
> -D_GNU_SOURCE
> >> >> >> >> > -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
> >> >> >> >> > -I../../../../include -I../../../../include
> >> >> >> >> > -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
> >> >> >> >> -L../../../../lib
> >> >> >> >> > async_handler.c   -lrealtime -lpthread -lrt -lm -o
> >> async_handler
> >> >> >> >> > In file included from async_handler.c:42:
> >> >> >> >> >
> >> >> >>
> >> /home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
> >> >> >> >> In
> >> >> >> >> > function `atomic_add':
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
> >> >> >> >> 9:
> >> >> >> >> > warning: implicit declaration of function
> >> `__sync_add_and_fetch'
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
> >> >> >> >> ttest.o)
> >> >> >> >> > (.text+0x1a7): In function `create_thread':
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
> >> >> >> >> st.h:119
> >> >> >> >> > : undefined reference to `__sync_add_and_fetch'
> >> >> >> >> > collect2: ld returned 1 exit status
> >> >> >> >> > make[4]: *** [async_handler] Error 1
> >> >> >> >> > make[4]: Leaving directory
> >> >> >> >> >
> >> >> >>
> >> `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
> >> >> >> >> > make[3]: *** [all] Error 2
> >> >> >> >> > make[3]: Leaving directory
> >> >> >> >> > `/home/LTP/ltp-dev-20101112/testcases/realtime/func'
> >> >> >> >> > make[2]: *** [all] Error 2
> >> >> >> >> > make[2]: Leaving directory
> >> >> >> >> `/home/LTP/ltp-dev-20101112/testcases/realtime'
> >> >> >> >> > make[1]: *** [all] Error 2
> >> >> >> >> > make[1]: Leaving directory
> >> >> `/home/LTP/ltp-dev-20101112/testcases'
> >> >> >> >> > make: *** [testcases-all] Error 2
> >> >> >> >> > ------------
> >> >> >> >> >
> >> >> >> >> > "realtime" build failed in:
> >> >> >> >> > ------------
> >> >> >> >> > RHEL4.8 -- x86, x86_64, ia64
> >> >> >> >> > RHEL5.4 -- x86
> >> >> >> >> > ------------
> >> >> >> >> >
> >> >> >> >> > "realtime" build succeeded in:
> >> >> >> >> > ------------
> >> >> >> >> > RHEL5.4 -- x86_64, ia64
> >> >> >> >> > ------------
> >> >> >> >> >
> >> >> >> >> > It is caused by "__sync_add_and_fetch".
> >> >> >> >> >
> >> >> >> >> > In following URL, "__sync_add_and_fetch" is "built-in
> functions
> >> >> for
> >> >> >> >> > atomic memory access". And It is provided in "gcc":
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> >   http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
> >> >> >> >> >
> >> >> >> >> > There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc
> >> of
> >> >> RHEL5.1
> >> >> >> >> -
> >> >> >> >> > RHEL5.4).
> >> >> >> >> > And there is not "__sync_add_and_fetch" in gcc3.4.6 (It
> is
> >> the
> >> >> gcc
> >> >> >> of
> >> >> >> >> > RHEL4.8)
> >> >> >> >> >
> >> >> >> >> > In addition, "__sync_add_and_fetch" is for 64 bit environment.
> >> >> >> >> >
> >> >> >> >> >
> >> >> >> >>
> >> >> >>
> >> >>
> >>
> http://stackoverflow.com/questions/130740/link-error-when-compiling-
> >> >> >> >> gcc-atom
> >> >> >> >> > ic-operation-in-32-bit-mode
> >> >> >> >> >
> >> >> >> >> >   http://gcc.gnu.org/wiki/Atomic
> >> >> >> >> >
> >> >> >> >> > Perhaps, the judgment that "realtime" must be built or not
> >> depends
> >> >> >> on
> >> >> >> >> > gcc's version (> 4.0) and 64 bits environment, I think.
> >> >> >> >>
> >> >> >> >> Could you please attach your testcases/realtime/config.log
> and
> >> >> >> >> testcases/realtime/include/realtime_config.h ?
> >> >> >> >> Thanks,
> >> >> >> >> -Garrett
> >> >> >> >
> >> >> >> >
> >> >> >> > I understood.
> >> >> >> > Thank you and sorry for my insufficient information.
> >> >> >> >
> >> >> >> > I attach following files:
> >> >> >> >   - config.log        (RHEL4.8-x86)
> >> >> >> >   - realtime_config.h (RHEL4.8-x86)
> >> >> >> >   - config.log        (RHEL5.5-x86)
> >> >> >> >   - realtime_config.h (RHEL5.5-x86)
> >> >> >>
> >> >> >>     Could you please try compiling the following C sources in
> both
> >> >> >> scenarios?
> >> >> >> Thanks,
> >> >> >> -Garrett
> >> >> >>
> >> >> >> #ifndef _GNU_SOURCE
> >> >> >> #define _GNU_SOURCE
> >> >> >> #endif
> >> >> >> #include <stdlib.h>
> >> >> >> int main(void) {
> >> >> >>         char *c;
> >> >> >>         return __sync_add_and_fetch(c, 1);
> >> >> >> }
> >> >> >
> >> >> >
> >> >> > I was going to compile the sent source in RHEL4.8/5.5-x86, but
> failed.
> >> >> >
> >> >> > ------------<RHEL4.8-x86>
> >> >> > [root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c
> >> >> > #ifndef _GNU_SOURCE
> >> >> > #define _GNU_SOURCE
> >> >> > #endif
> >> >> > #include <stdlib.h>
> >> >> > int main(void) {
> >> >> >        char *c;
> >> >> >        return __sync_add_and_fetch(c, 1); }
> >> >> >
> >> >> > [root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o
> >> >> realtime-test
> >> >> > /tmp/cciHVx8b.o(.text+0x25): In function `main':
> >> >> > : undefined reference to `__sync_add_and_fetch'
> >> >> > collect2: ld returned 1 exit status
> >> >> > [root@RHEL48-LTP-x86 async_handler]#
> >> >> > [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2
> >> >> -fno-strict-aliasing -pipe -Wall -D
> >> >> >
> >> >>
> >>
> _GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
> >> >> -I../../../../include
> >> >>
> >>
> >  -I../../../../include   -L/home/LTP/ltp-dev-20101112/testcases/re
> >> >> altime/lib -L../../../..
> >> >> > /lib  realtime-test.c   -lrealtime -lpthread -lrt -lm -o
> >> realtime-test
> >> >> > realtime-test.c: In function `main':
> >> >> > realtime-test.c:7: warning: implicit declaration of function
> >> >> `__sync_add_and_fetch'
> >> >> > realtime-test.c:6: warning: 'c' might be used uninitialized in
> this
> >> >> function
> >> >> > /tmp/ccIDckLk.o(.text+0x10): In function `main':
> >> >> >
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
> >> >> ltime-test.c:7: undefined reference to `__sync_add_and_fetch'
> >> >> > collect2: ld returned 1 exit status
> >> >> > [root@RHEL48-LTP-x86 async_handler]#
> >> >> > ------------
> >> >> >
> >> >> > ------------<RHEL5.5-x86>
> >> >> > [root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c
> >> >> > #ifndef _GNU_SOURCE
> >> >> > #define _GNU_SOURCE
> >> >> > #endif
> >> >> > #include <stdlib.h>
> >> >> > int main(void) {
> >> >> >        char *c;
> >> >> >        return __sync_add_and_fetch(c, 1); }
> >> >> >
> >> >> > [root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o
> >> >> realtime-test
> >> >> > /tmp/ccK8hmPs.o: In function `main':
> >> >> > realtime-test.c:(.text+0x20): undefined reference to
> >> >> `__sync_add_and_fetch_1'
> >> >> > collect2: ld returned 1 exit status
> >> >> > [root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2
> >> >> -fno-strict-aliasing -pipe -Wall -D
> >> >> >
> >> >>
> >>
> _GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
> >> >> -I../../../../include
> >> >>
> >>
> >  -I../../../../include   -L/home/LTP/ltp-dev-20101112/testcases/re
> >> >> altime/lib -L../../../..
> >> >> > /lib  realtime-test.c   -lrealtime -lpthread -lrt -lm -o
> >> realtime-test
> >> >> > realtime-test.c: In function 'main':
> >> >> > realtime-test.c:7: warning: 'c' is used uninitialized in this
> >> function
> >> >> > /tmp/ccKUnocB.o: In function `main':
> >> >> >
> >> >>
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
> >> >> ltime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
> >> >> > collect2: ld returned 1 exit status
> >> >> > [root@RHEL55-LTP-x86 async_handler]#
> >> >>
> >> >>     Not sure why but it incorrectly passed on your machine:
> >> >>
> >> >> configure:5186: checking Checking for __sync_add_and_fetch gcc
> builtin
> >> >> function
> >> >> configure:5216: gcc -c -g -O2  conftest.c >&5
> >> >> configure:5222: $? = 0
> >> >>
> >> >> 23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin
> >> >> function])
> >> >> 24 AC_TRY_COMPILE([
> >> >> 25 #ifndef _GNU_SOURCE
> >> >> 26 #define _GNU_SOURCE
> >> >> 27 #endif
> >> >> 28 #include <stdlib.h>],[int main(void) {
> >> >> 29         char *c;
> >> >> 30         return __sync_add_and_fetch(c, 1);
> >> >> 31 }],[has___sync_add_and_fetch=yes])
> >> >> 32 if test "x$has___sync_add_and_fetch" = xyes; then
> >> >> 33         AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if
> you
> >> >> have the __   sync_add_and_fetch gcc builtin function])
> >> >> 34         AC_MSG_RESULT(yes)
> >> >> 35 else
> >> >> 36         AC_MSG_RESULT(no)
> >> >> 37 fi
> >> >>
> >> >>     Whereas it didn't on mine:
> >> >>
> >> >> 248 configure:4777: checking Checking for __sync_add_and_fetch gcc
> >> >> builtin funct    ion
> >> >> 249 configure:4797: gcc -c -g -O2  conftest.c >&5
> >> >> 250 configure:4797: $? = 0
> >> >>
> >> >>     There was a potential problem with the macro though (I keep
> on
> >> >> forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine
> >> >> main() with the block of code provided), so please let me know if
> >> >> things work for you.
> >> >> Thanks,
> >> >> -Garrett
> >> >
> >> >
> >> > I attached same options by obeying "config.log".
> >> > And I confirmed that "conftest.c" could be successfully compiled
> by
> >> > manual operation:
> >> > ------------
> >> > [root@RHEL48-LTP-x86 async_handler]# pwd
> >> > /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler
> >> > [root@RHEL48-LTP-x86 async_handler]# ll
> >> > total 36
> >> > -rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
> >> > -rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
> >> > -rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
> >> > -rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
> >> > -rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
> >> > -rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
> >> > [root@RHEL48-LTP-x86 async_handler]# cat conftest.c
> >> > #ifndef _GNU_SOURCE
> >> > #define _GNU_SOURCE
> >> > #endif
> >> > #include <stdlib.h>
> >> > int main(void) {
> >> >        char *c;
> >> >        return __sync_add_and_fetch(c, 1); }
> >> >
> >> > [root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 conftest.c
> >> > [root@RHEL48-LTP-x86 async_handler]# echo $?
> >> > 0
> >> > [root@RHEL48-LTP-x86 async_handler]# ll
> >> > total 40
> >> > -rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
> >> > -rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
> >> > -rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
> >> > -rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
> >> > -rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
> >> > -rw-r--r--  1 root root 2596 Nov 16 16:24 conftest.o
> >> > -rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
> >> > [root@RHEL48-LTP-x86 async_handler]#
> >> > ------------
> >> >
> >> > I tried build async_handler.c with "-c" option by manual operation
> >> > according to "conftest.c", and it succeeded:
> >> > ------------
> >> > [root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2
> -fno-strict-aliasing
> >> -pipe -Wall
> >>
> -D_GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
> >> de -I../../../../include
> >>
> -I../../../../include   -L/home/LTP/ltp-dev-20101112/testcases/realt
> >> ime/lib -L../../../../lib  async_handler.c   -lrealtime -lpthread
> -lrt
> >> -lm -o async_handler
> >> > In file included from async_handler.c:42:
> >> >
> /home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
> >> In function `atomic_add':
> >> >
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
> >> 9: warning: implicit declaration of function `__sync_add_and_fetch'
> >> > gcc: -lrealtime: linker input file unused because linking not done
> >> > gcc: -lpthread: linker input file unused because linking not done
> >> > gcc: -lrt: linker input file unused because linking not done
> >> > gcc: -lm: linker input file unused because linking not done
> >> > [root@RHEL48-LTP-x86 async_handler]# echo $?
> >> > 0
> >> > [root@RHEL48-LTP-x86 async_handler]# ll
> >> > total 56
> >> > -rw-rw-r--  1 root root  1045 Nov 12 02:19 Makefile
> >> > -rw-r--r--  1 root root 12612 Nov 16 16:27 async_handler
> >> > -rw-rw-r--  1 root root  5341 Nov 12 02:19 async_handler.c
> >> > -rw-rw-r--  1 root root  4485 Nov 12 02:19 async_handler_jk.c
> >> > -rw-rw-r--  1 root root  6013 Nov 12 02:19 async_handler_tsc.c
> >> > -rw-r--r--  1 root root   147 Nov 15 15:14 conftest.c
> >> > -rw-r--r--  1 root root  2596 Nov 16 16:24 conftest.o
> >> > -rwxrwxr-x  1 root root   333 Nov 12 02:19 run_auto.sh
> >> > [root@RHEL48-LTP-x86 async_handler]#
> >> > ------------
> >> >
> >> > But above build is not with linkage by "-c" option.
> >> > With linkage, it failed:
> >> > ------------
> >> > [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -fno-strict-aliasing
> >> -pipe -Wall
> >>
> -D_GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
> >> de -I../../../../include
> >>
> -I../../../../include   -L/home/LTP/ltp-dev-20101112/testcases/realt
> >> ime/lib -L../../../../lib  async_handler.c   -lrealtime -lpthread
> -lrt
> >> -lm -o async_handler
> >> > In file included from async_handler.c:42:
> >> >
> /home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
> >> In function `atomic_add':
> >> >
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
> >> 9: warning: implicit declaration of function `__sync_add_and_fetch'
> >> >
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
> >> ttest.o)(.text+0x1a7): In function `create_thread':
> >> >
> >>
> /home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
> >> st.h:119: undefined reference to `__sync_add_and_fetch'
> >> > collect2: ld returned 1 exit status
> >> > [root@RHEL48-LTP-x86 async_handler]#
> >> > ------------
> >> >
> >> > I think that the check of "__sync_add_and_fetch" by "conftest.c"
> must
> >> > be done without "-c" option.
> >>
> >>     Please try out HEAD again. It should be fixed now (I substituted
> >> AC_LINK_IFELSE for AC_TRY_COMPILE).
> >> Thanks,
> >> -Garrett
> >
> > Thank you for your response.
> >
> >
> > I tried to build "realtime" tests with recent git "ltp-c23c351.tar.gz".
> >
> > Build succeeded in RHEL5.5-x86 system.
> >
> > But build failed in RHEL4.8-x86/x86_64/ia64 systems:
> > ------------<RHEL4.8-x86>
> > gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
> -D_GNU_SOURCE  -I/home/LTP/ltp-dev-2010
> > 1116/testcases/realtime/include -I../../../../include
> -I../../../../include   -L/home/LTP/
> > ltp-dev-20101116/testcases/realtime/lib
> -L../../../../lib  testpi-4.c   -lrealtime -lpthre
> > ad -lrt -lm -o testpi-4
> > gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
> -D_GNU_SOURCE  -I/home/LTP/ltp-dev-2010
> > 1116/testcases/realtime/include -I../../../../include
> -I../../../../include   -L/home/LTP/
> > ltp-dev-20101116/testcases/realtime/lib
> -L../../../../lib  testpi-5.c   -lrealtime -lpthre
> > ad -lrt -lm -o testpi-5
> > testpi-5.c: In function `do_test':
> > testpi-5.c:69: warning: unused variable `mutexattr'
> > testpi-5.c:70: warning: unused variable `retc'
> > testpi-5.c:70: warning: unused variable `protocol'
> > gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
> -D_GNU_SOURCE  -I/home/LTP/ltp-dev-2010
> > 1116/testcases/realtime/include -I../../../../include
> -I../../../../include   -L/home/LTP/
> > ltp-dev-20101116/testcases/realtime/lib
> -L../../../../lib  testpi-6.c   -lrealtime -lpthre
> > ad -lrt -lm -o testpi-6
> > testpi-6.c: In function `do_test':
> > testpi-6.c:75: warning: implicit declaration of function
> `pthread_mutexattr_setrobust_np'
> > testpi-6.c:75: error: `PTHREAD_MUTEX_ROBUST_NP' undeclared (first use
> in this function)
> > testpi-6.c:75: error: (Each undeclared identifier is reported only once
> > testpi-6.c:75: error: for each function it appears in.)
> > testpi-6.c:79: warning: implicit declaration of function
> `pthread_mutexattr_getrobust_np'
> > make[4]: *** [testpi-6] Error 1
> > make[4]: Leaving directory
> `/home/LTP/ltp-dev-20101116/testcases/realtime/func/pi-tests'
> > make[3]: *** [all] Error 2
> > make[3]: Leaving directory
> `/home/LTP/ltp-dev-20101116/testcases/realtime/func'
> > make[2]: *** [all] Error 2
> > make[2]: Leaving directory
> `/home/LTP/ltp-dev-20101116/testcases/realtime'
> > make[1]: *** [all] Error 2
> > make[1]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases'
> > make: *** [testcases-all] Error 2
> > ------------
> >
> > The error of the "async_handler.c" by "__sync_add_and_fetch" until
> yesterday
> > was solved.
> > However, a new failure about mutex occurs in another function.
> >
> > I am investigating about it.
> > Perhaps.. perhaps, mutex is supported after kernel version 2.6.16, I
> think.
> >
> >
> > This is just a quick note to let you know.
> 
> Lol. Please try again.


Thank you for your response.

I tried to build with "ltp-66d67b5.tar.gz", but it failed in configure.
Therefore, I tried with older git "ltp-92dfd5b.tar.gz", and it succeeded 
in RHEL5.5-x86 and RHEL4.8-x86 systems.

From "ltp-92dfd5b.tar.gz" to "ltp-66d67b5.tar.gz", new probrem occured.

New revisions are released in sequence. Therefore I intend to build 
with the latest version again.


Thank you--


-Tomonori Mitani



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