I try to crosscompile this small program to my arm device, but get error:
arm-none-linux-gnueabi/bin/ld: cannot find -lasound
collect2: error: ld returned 1 exit status
Then i found libasound files in my target device and have copied to my folder /usr/lib but still no effect.
I use the commands:
export CFLAGS="-I/usr/include -I/usr/lib"
$CC -o play sound_playback.c $CFLAGS -lasound
I have installed libasound2-dev package on my Ubuntu 14.04 x64 and be able to compile the program on my native computer without any errors.
UPDATE WITH SOLUTION
As Marc and John have said below, i just should use -L flag to set my library path. So my command line should be:
$CC -o play sound_playback.c $CFLAGS -L/usr/lib -lasound
Related
I've just tried to run the simple HTTP server from the language documentation. The program fails with an error.
/usr/bin/ld: cannot find -lssl
collect2: error: ld returned 1 exit status
Error: execution of command failed with code: 1: `cc -o "/home/rasmus/dev/crystal/projects/hello/.crystal/crystal-run-hello.tmp" "${#}" -rdynamic -lssl -levent -lrt -lpcl -lpcre -lgc -lpthread -ldl`
The program has been copy-pasted from the documentation.
I can confirm that the program did/does run on my guest machine, but not on my host. Both are Ubuntu 14.04.3 installs.
The problem was simply that the SSL libraries weren't installed. If you have the same problem you can simply run sudo apt-get install libssl-dev. This should install everything needed to fix the error.
I installed GLFW3 and am trying to compile my OpenGL program with the following:
g++ -std=c++11 main.cpp -lGL -lGLEW -lglfw3
But here's the library error I get:
/usr/bin/ld: cannot find -lglfw3
collect2: error: ld returned 1 exit status
I also tried with pkg-config:
g++ `pkg-config --cflags glfw3 glew` -o myprog main.cpp `pkg-config --static --libs glfw3 glew`
it compiles but when I run myprog it says it can't find libglfw.so.3
But it is located in /usr/local/lib
http://www.brandonfoltz.com/2012/12/compile-glfw-on-ubuntu-and-fix-libglfw-so-cannot-open-error/
Ubuntu installs libglfw.so.3 in /usr/local/lib so you have to add this line to /etc/ld.so.conf
I had the same problem.
In my case was usefull following steps:
Download glfw source code
unzip it
cd glfw_folder
cmake . (with dot)
make
sudo make install
To check, copy and paste following command in your console "whereis libglfw3".
you should have output like this one: "libglfw3: /usr/local/lib/libglfw3.a" (or another path after ":").
My config: VAIO Pro 13/Ubuntu 16.04 LTS/ Intel HD4000.
P.S.: Yes, I'd tryed "sudo apt-get install libglfw3" and all dependenses.
I am compiling a C++ application using GNU g++. The project takes advantage of OpenSSL libraries.
Background
On my machine (a 64 bit CentOS quad core) I compile and link my files.
g++ -g -c -L/usr/local/lib/ -L/usr/lib64/
-I/usr/local/include/ -I/usr/local/ssl/include/
-lcrypto mysrc1.cpp mysrc2.cpp mysrc3.cpp
g++ -L/usr/local/lib/ -L/usr/lib64/ -lcrypto
*.o -o ./myapp.out
My application uses function MD5 which is contained in libcrypto.so. As you can see I specify to g++ the dirs where to search using the -L, -I options and which libraries to look for with the -l<lib-name> option. There are some trivial paths like /usr/local/lib which can be omitted of course, but I specified them because the makefile is parametric.
The problem
My problem is that I can successfully compile my stuff (first command), but linking fails (second command):
/usr/bin/ld: cannot find -lcrypto
collect2: ld returned 1 exit status
make: * [cppsims_par] Error 1
But I did check folders and everything... libcrypto.so is inside /usr/lib64/. What is going on?
It may help if you try strace to find why it failed the file lookup
strace -f -e trace=file g++ -L/usr/local/lib/ -L/usr/lib64/ -lcrypto
*.o -o ./myapp.out
I did find the problem and it is related to this question: ld cannot find an existing library
Actually I had no symlink libcrypto.so and the compiler was not able to find the library...
I had related issue, and resolved it after inspecting the trace.
I had
-L<my/path/to/lib> -llib_some_library
when it should have been
-L<my/path/to/lib> -lsome_library
I am trying to build some software on a brand new install of CentOS 5.5
My compile line is :
g++ -I ../common/ -I ../readers/ -I ../writers/ -I /home/dcole/software/xerces-c-3.1.1/src -O3 -Wall -fopenmp -fPIC -o chipper chipper.cpp -L/usr/lib64/ ../../lib/IDT.a ../../lib/Linux/libxerces-c.a -lcurl -lidn -ldl -lssl ../../lib/Linux/libfftw3f.a -lpthread -lm
and I am getting
[exec] /usr/bin/ld: cannot find -lcurl
[exec] collect2: ld returned 1 exit status
Even though I can actually see the lib
$ /sbin/ldconfig -p | grep curl
libcurl.so.3 (libc6,x86-64) => /usr/lib64/libcurl.so.3
libcurl.so.3 (libc6) => /usr/lib/libcurl.so.3
So why cant g++ see it?
At link time, -lcurl tells the linker to look for libcurl.so.
From there, the SONAME within the library (libcurl.so.3) is embedded into the executable, and that's the filename that is searched for when executing.
You have libcurl.so.3 but may be lacking libcurl.so, which is needed for development.
What is your distribution? Usually there will be a second package with development headers/libraries, separate from the runtime bits.
Copy the file from any source /usr/lib/libcurl.so and place it in /usr/lib/, then try to compile. It will work out.
I'm trying to use the Boost Libraries ... but to no avail. I attempted to follow the Getting Started tutorial on Boost's website (for Unix Variants), but having problems along the way.
I compiled the libraries into a directory in my Downloads folder:
/Users/myUsername/Downloads/boostCompiled
When I use the full path to the library ... The example program (given on the Boost Website) compiles and links fine.
g++ -o boostTesting boostTesting.cpp -I /Users/myUsername/Downloads/boostCompiled/include/ /Users/myUsername/Downloads/boostCompiled/lib/libboost_regex.a
However, when I attempt to link the using the -L and -l options ... it fails ...
g++ -o boostTesting boostTesting.cpp -I /Users/myUsername/Downloads/boostCompiled/include/ -L /Users/myUsername/Downloads/boostCompiled/lib/ -l boost_regex
ld: library not found for -lboost_regex
collect2: ld returned 1 exit status
g++ -o boostTesting boostTesting.cpp -I /Users/myUsername/Downloads/boostCompiled/include/ -L /Users/myUsername/Downloads/boostCompiled/lib/ -l libboost_regex
ld: library not found for -llibboost_regex
collect2: ld returned 1 exit status
g++ -o boostTesting boostTesting.cpp -I /Users/myUsername/Downloads/boostCompiled/include/ -L /Users/myUsername/Downloads/boostCompiled/lib/ -l regex
ld: library not found for -lregex
collect2: ld returned 1 exit status
My shell is bash ... and I've set my DYLD_LIBRARY_PATH to the following:
export DYLD_LIBRARY_PATH=/usr/local/cuda/lib:/Users/myUsername/Downloads/boostCompiled/lib
It appears I'm not using the correct name to link (with the -l) option. Can somebody please help! Thanks in advance!
There shouldn't be a space between -L and /Users/myUsername/Downloads/boostCompiled/lib/
Make sure that libboost_regex.a is compiled in /Users/myUsername/Downloads/boostCompiled/lib.
Then this should work:
g++ -o boostTesting boostTesting.cpp -I/Users/myUsername/Downloads/boostCompiled/include/ -L/Users/myUsername/Downloads/boostCompiled/lib/ -lboost_regex