I need linux-gate.so.1?

[frankit60]

Hello guys,
I am try to port ocilib http://orclib.sourceforge.net/.

The ldd output of the library is:

ldd ./libocilib.so
linux-gate.so.1 => (0xffffe000)
libclntsh.so.10.1 => /data/oracle/10g/lib/libclntsh.so.10.1 (0xb7124000)
libc.so.6 => /lib/libc.so.6 (0xb6fd5000)
libnnz10.so => /data/oracle/10g/lib/libnnz10.so (0xb6dd1000)
libdl.so.2 => /lib/libdl.so.2 (0xb6dcd000)
libm.so.6 => /lib/libm.so.6 (0xb6da7000)
libpthread.so.0 => /lib/libpthread.so.0 (0xb6d90000)
libnsl.so.1 => /lib/libnsl.so.1 (0xb6d79000)
/lib/ld-linux.so.2 (0x80000000)

My questions are:

what is linux-gate.so.1?
I need of linux-gate.so.1?

Thanks
Franco

[SirDice]

What linux_base are you running?


What is linux-gate.so.1?

When you use the ldd utility on a reasonably recent Linux system you'll frequently see a reference to an ethereal entity known as linux-gate.so.1:

ldd /bin/sh
linux-gate.so.1 => (0xffffe000)
libdl.so.2 => /lib/libdl.so.2 (0xb7fb2000)
libc.so.6 => /lib/libc.so.6 (0xb7e7c000)
/lib/ld-linux.so.2 (0xb7fba000)


What's so strange about that? It's just a dynamically loaded library, right?

Sort of, for sufficiently generous definitions of dynamically loaded library. The lack of file name in the output indicates that ldd was unable to locate a file by that name. Indeed, any attempt to find the corresponding file – whether manually or by software designed to automatically load and analyze such libraries – will be unsuccessful.

From time to time this is a cause of befuddlement and frustration for users as they go searching for a non-existent system file. You can confidently tell users on this futile quest that there's not supposed to be a linux-gate.so.1 file present anywhere on the file system; it's a virtual DSO, a shared object exposed by the kernel at a fixed address in every process' memory
http://www.trilithium.com/johan/2005/08/linux-gate/

[SirDice]

Why don't you try porting it to native Freebsd?

http://orclib.sourceforge.net/download/

[frankit60]

The FreeBSD version is 7.1 i386
The linux-base is linux_base-fc4


I have compile and install with success the ocilib and only this warning: libc.so.7, needed by /usr/local/lib/libocilib.so, may
conflict with libc.so.6

But when run demo I have a segmentation fault.

The gdb output is:


10.0.1.26/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/ocilib-3.1.0/demo#
gdb ocilib_demo ocilib_demo.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
Core was generated by `ocilib_demo'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so.10.1...done.
Loaded symbols for
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so.10.1
Reading symbols from /usr/local/lib/libocilib.so.4...done.
Loaded symbols for /usr/local/lib/libocilib.so.4
Reading symbols from /lib/libc.so.7...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libnnz10.so...done.
Loaded symbols for
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libnnz10.so
Reading symbols from /usr/compat/linux/lib/libdl.so.2...done.
Loaded symbols for /usr/compat/linux/lib/libdl.so.2
Reading symbols from /usr/compat/linux/lib/libm.so.6...done.
Loaded symbols for /usr/compat/linux/lib/libm.so.6
Reading symbols from /usr/compat/linux/lib/libpthread.so.0...done.
Loaded symbols for /usr/compat/linux/lib/libpthread.so.0
Reading symbols from /usr/compat/linux/lib/libnsl.so.1...done.
Loaded symbols for /usr/compat/linux/lib/libnsl.so.1
Reading symbols from /usr/compat/linux/lib/libc.so.6...done.
Loaded symbols for /usr/compat/linux/lib/libc.so.6
Reading symbols from /usr/compat/linux/lib/ld-linux.so.2...done.
Loaded symbols for /usr/compat/linux/lib/ld-linux.so.2
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 0x292aeb41 in __init_misc () from /usr/compat/linux/lib/libc.so.6
(gdb)

I think that the problem is that:
/usr/local/lib/libocilib.so need libc.so.7
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so need libc.so.6

and now I want to try to test the use libocilib from linux emulation

any idea?

Ciao
Franco

[SirDice]

Try a more recent linux_base like f8.

And again, why don't you try compiling it natively on freebsd? Why use the linux emulation at all?

[frankit60]

The linux-oracle-instantclient need fc4.
Still trying to replace and to continue with the native port.

Thanks
Franco

[SirDice]

The linux-oracle-instantclient need fc4.
Set in /etc/make.conf

OVERRIDE_LINUX_BASE_PORT=f8
OVERRIDE_LINUX_NONBASE_PORTS=f8

And it'll use f8

[frankit60]

Well,

1) create a new virtual machine for test
2) install linux_base-f8
3) change /rc/conf
4) install instantclient
5) recompile ocilib with demo
6) send you a feedback

Two hour from now :-)

Thanks
Franco

[frankit60]

Sorry!!


1) create a new virtual machine for test
2) install linux_base-f8
3) change /etc/make.conf
4) install instantclient
5) recompile ocilib with demo
6) send you a feedback

[frankit60]

In a new machine I have this error.
Have any idea?

Thanks
Franco

bsd71-base# make install clean
===> Installing for linux-oracle-instantclient-basic-10.2.0.3.20061115_2
===> linux-oracle-instantclient-basic-10.2.0.3.20061115_2 depends on file: /compat/linux/bin/sh - not found
===> Verifying install for /compat/linux/bin/sh in /usr/ports/emulators/linux_base-f8
===> linux_base-f8-8_11 compat.linux.osrelease: 2.4.2 is not supported.
*** Error code 1

Stop in /usr/ports/emulators/linux_base-f8.
*** Error code 1

Stop in /usr/ports/databases/linux-oracle-instantclient-basic.

[frankit60]

resolve

sysctl compat.linux.osrelease=2.6.16

[SirDice]

Correct :e

[frankit60]

I have compile and installed the library ;)
But there is a problem with make the demo :(

This is the Makefile_demo generate from configure script


INCS = -I/usr/local/include
CFLAGS = -DOCI_IMPORT_LINKAGE -DOCI_CHARSET_ANSI
LDFLAGS= -L/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib -lclntsh -L/usr/local/lib -locilib
CC = gcc
SRCS = ocilib_demo.c
OBJS = $(SRCS:.c=.o)

all: ocilib_demo

demo: $(OBJS)
$(CC) $(LDFLAGS) -o $@ $(OBJS)

.c.o:
$(CC) $(INCS) $(CFLAGS) -c -o $@ $<

clean:
rm -f *~ $(OBJS)



This is the error, do not use the Include path, what is wrong?


bsd71-base# make -f Makefile_demo
gcc -DOCI_IMPORT_LINKAGE -DOCI_CHARSET_ANSI -L/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib -lclntsh -L/usr/local/lib -locilib ocilib_demo.c -o ocilib_demo
In file included from ocilib_demo.c:34:
ocilib_demo.h:89:20: error: ocilib.h: No such file or directory
ocilib_demo.c:40: error: expected ')' before '*' token

[DutchDaemon]

frankit60, use code tags (http://forums.freebsd.org/misc.php?do=bbcode#code) around system output; I've edited four posts, and it's getting annoying.

[richardpl]

bsd71-base# make -f Makefile_demo
gcc -DOCI_IMPORT_LINKAGE -DOCI_CHARSET_ANSI -L/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib -lclntsh -L/usr/local/lib -locilib ocilib_demo.c -o ocilib_demo
In file included from ocilib_demo.c:34:
ocilib_demo.h:89:20: error: ocilib.h: No such file or directory
ocilib_demo.c:40: error: expected ')' before '*' token

ocilib.h is located in /usr/local/include?

Hmm, what are you trying to do?
It doesnt make sense to build demo for FreeBSD if there is no native library for FreeBSD.

Either port complete code to FreeBSD or use binaries via linux emulation.

[frankit60]

Ciao richardpl,

ocilib.h is here

bsd71-test1# ll /usr/local/include/ocilib.h
-rw-r--r-- 1 root wheel 274472 Apr 22 18:21 /usr/local/include/ocilib.h


I try to compile with this command

bsd71-test1# gcc -DOCI_IMPORT_LINKAGE -DOCI_CHARSET_ANSI -g -I/usr/local/include -L/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib -lclntsh -L/usr/local/lib -locilib ocilib_demo.c -o ocilib_demo
/usr/bin/ld: warning: libc.so.6, needed by /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so, may conflict with libc.so.7
bsd71-test1#

I try to run program but have segmentation dump

bsd71-test1# ./ocilib_demo
Segmentation fault (core dumped)
bsd71-test1#

This is the output of gdb

bsd71-test1# gdb ocilib_demo.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"..."/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/ocilib-3.2.0/demo/ocilib_demo.core": not in executable format: File format not recognized

(gdb) q
bsd71-test1#


libclntsh.so is oracle-linux library from instantclient port

bsd71-test1# find /usr -name libclntsh.so
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so
bsd71-test1# ll /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so
lrwxr-xr-x 1 root wheel 17 Apr 22 18:20 /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so -> libclntsh.so.10.1
bsd71-test1# ll /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so.10.1
-r--r--r-- 1 root wheel 18825267 Apr 22 17:48 /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so.10.1
bsd71-test1#


libocilib.so is compiled in freebsd from source

bsd71-test1# find /usr -name libocilib.so
/usr/local/lib/libocilib.so
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/ocilib-3.2.0/src/.libs/libocilib.so
bsd71-test1# ll /usr/local/lib/libocilib.so
lrwxr-xr-x 1 root wheel 14 Apr 22 18:21 /usr/local/lib/libocilib.so -> libocilib.so.5
bsd71-test1# ll /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/ocilib-3.2.0/src/.libs/libocilib.so

This are the env variable

bsd71-test1# echo $ORACLE_HOME/
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/
bsd71-test1# echo $LD_LIBRARY_PATH
/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib:/usr/compat/linux/lib:/usr/local/lib
bsd71-test1#



Any idea?

Thanks
Franco

[SirDice]

You need to run the whole deal inside the linux environment. The ocilib was compiled using that. linux-oracle-instantclient is there too.

As far as I understood it you probably need to copy the .h files from ocilib to /compat/linux/usr/include. Perhaps the ocilib install already put them there, I didn't look that far..

[frankit60]

I move ocilib.h inside linux environment but the problem is the same :(


bsd71-test1# mv /usr/local/include/ocilib.h /usr/compat/linux/usr/include/.
bsd71-test1#
bsd71-test1# gcc -DOCI_IMPORT_LINKAGE -DOCI_CHARSET_ANSI -g -I/usr/compat/linux/usr/include -L/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib -lclntsh -L/usr/local/lib -locilib ocilib_demo.c -o ocilib_demo
/usr/bin/ld: warning: libc.so.6, needed by /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so, may conflict with libc.so.7
bsd71-test1#
bsd71-test1# ./ocilib_demo
Segmentation fault (core dumped)
bsd71-test1#

[frankit60]

I think that the problem is libocilib.so not compiled in linux environment.
How I can force libocilib.so to link with libc.so.6 (linux env) instead of libc.so.7 (fbsd env) ?

I try to swap (for test only) /usr/lib/libc.so to libc.s0.6 but the gcc require libc.so.7

:(:(

[SirDice]

Not sure but I think just starting /compat/linux/bin/bash will drop you in the linux emulated bit. Run the compiler from there.

[frankit60]

The same error.
I reinstall ocilib from bash.
When compile and run demo obtain a core dumped


bash-3.2# gcc -DOCI_IMPORT_LINKAGE -DOCI_CHARSET_ANSI -I/usr/compat/linux/usr/include -L/usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib -lclntsh -L/usr/local/lib -locilib -L/usr/compat/linux/usr/lib ocilib_demo.c -o ocilib_demo
/usr/bin/ld: warning: libc.so.6, needed by /usr/compat/linux/usr/lib/oracle/10.2.0.3/client/lib/libclntsh.so, may conflict with libc.so.7
bash-3.2# ./ocilib_demo
Segmentation fault (core dumped)
bash-3.2#

[richardpl]

So you are trying to compile it using linux emulation.
For that you will need to first set up linux jail inside FreeBSD. (but I doubt how this could be usefull)

Either use binaries for Linux or port whole stuff to FreeBSD.

[frankit60]

....
Either use binaries for Linux or port whole stuff to FreeBSD.
I can not port oracle instantclient to FreeBSD :)
I try to use libocilib.so compiled in linux that the author sendme.
I need only to brandelf library?

[SirDice]

Mind you I've never developed...

This may provide a little more information about cross developing, it does look a bit outdated though..

http://wiki.freebsd.org/linux-xdev