how to find dlopen be able to find shared library in /lib/xxx/yyyy?

how to find dlopen be able to find shared library in /lib/xxx/yyyy?

[sotrdg sotrdg]

I have an C.UTF-8.so at /usr/local/lib/fast_io_i18n_data/locale/C.UTF-8.so.

I tried to do
dlopen(“fast_io_i18n_data/locale/C.UTF-8.so”,RTLD_GLOBAL | RTLD_NOW);

However, the dlls cannot get found. While loading dlls in /usr/local/lib/C.UTF-8.so could get found with no issues.

Any solution to get around this??

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Re: how to find dlopen be able to find shared library in /lib/xxx/yyyy?

[Florian Weimer]

* sotrdg sotrdg via Libc-help:

> I have an C.UTF-8.so at /usr/local/lib/fast_io_i18n_data/locale/C.UTF-8.so.
>
> I tried to do
> dlopen(“fast_io_i18n_data/locale/C.UTF-8.so”,RTLD_GLOBAL | RTLD_NOW);
>
> However, the dlls cannot get found.

You need to provide the full (absolute) path to the shared object.
Searching only happens if the dlopen argument doesn ot contain a slash.
You can still use $LIB to paper over 32-bit/64-bit differences.

make stage of build glibc-2.32 tries to install in /usr/include

[J Lumby]

I am building glibc-2.32 from source and hit an error during execution 
of make - see below.

It appears that the nss makefile is trying to install an include file in 
/usr/include.

Surely it should not be doing that for the make stage,  i.e. *not* make 
install.

my configure command (which was successful) was

../glibc-2.32/configure 
--with-headers=/mnt/julybild/sysbuild/linux-5.10.1-Antec/usr/include 
--prefix=/usr --enable-kernel=5.10.1

and the make command was

MAKE=/usr/local/bin/make CC=gcc make

Is this a bug?

Cheers,    John Lumby

___________________________________________________________________

make[2]: Entering directory '/mnt/julybild/sysbuild/glibc-2.32/nss'
/usr/local/bin/install -c -m 644 ../include/limits.h /usr/include/limits.h
/usr/local/bin/install: cannot remove '/usr/include/limits.h': 
Permission denied
make[2]: *** [../Makerules:1237: /usr/include/limits.h] Error 1
make[2]: Leaving directory '/mnt/julybild/sysbuild/glibc-2.32/nss'
make[1]: *** [Makefile:470: nss/others] Error 2
make[1]: Leaving directory '/mnt/julybild/sysbuild/glibc-2.32'
make: *** [Makefile:9: all] Error 2
rc= 2 Sat Jan  2 18:02:10 EST 2021 from MAKE=/usr/local/bin/make CC=gcc 
make glibc-2.32