error while loading share libraries "libmpc.so.2 not found"

[doncidaci]

---

i just

 gcc -c hello hello.c

get this message

error while loading share libraries  "libmpc.so.2 not found"

then i check out

ls -l /usr/lib/libmpc.so.2

and it is a link

libmpc.so.2 --->libmpc.so.3

but i cannot found libmpc.so.3

[nihili]

post the "hello.c" program here, please.

if libmpc.so.2 is a link, it tells you where it links to; what you posted suggests libmpc.so.3 is in the same directory. if it isn't then the link is broken. it could mean you have to install the library that provides libmpc.so.3.

[doncidaci]

post the "hello.c" program here, please.

if libmpc.so.2 is a link, it tells you where it links to; what you posted suggests libmpc.so.3 is in the same directory. if it isn't then the link is broken. it could mean you have to install the library that provides libmpc.so.3.

it links to libmpc.so.3 , they are all in the same directory
but i am not sure where can i download libmpc.so.3 , i thi
nk it is a share library for gcc compiler just in linux.

/* hello.c */
int main(int argc, char **argv)
{
    printf("welcome to wayQiu.com\n");
}

[gregm]

I think the issue is your command line - and nothing to do with libmpc. You're certainly not using it.

Try:

gcc hello.c -o hello

Then try:

gcc -Wall hello.c -o hello

and read the warnings.

[doncidaci]

I think the issue is your command line - and nothing to do with libmpc. You're certainly not using it.

Try:

gcc hello.c -o hello

Then try:

gcc -Wall hello.c -o hello

and read the warnings.

i m sorry the same issue : cc1: error while loading ..... cant op libmpc.so.2

[gregm]

It looks to me like you have an installation issue then. You might need to run ldconfig.

Try:

export LD_LIBRARY_PATH="/usr/lib";  sudo ldconfig

[doncidaci]

the same as the latest , but i want to install a new gcc now.
i download gcc-4.9.0.tar.bz2 to /opt , i have tar it and create a directory means /usr/local/gcc-4.9.0.
the next commands is as follows :

cd opt/gcc-4.9.0;  ./contrib/download_prerequisites
./configure --prefix=/usr/local/gcc-4.9.0

then there is an error message:

Checking for gcc.... gcc
Checking for C Compliler Default  output file name...
configure: error: in '/usr/local/gcc-4.9.0':
configure: error: C Compiler can not Crete executables
See 'config.log' for more details.

[doncidaci]

has resolved. thank u @gregm