Impossible to find -lSDL2 for /usr/bin/ld

[cristicbz]

Impossible to find -lSDL2 for /usr/bin/ld

[cristicbz]

So the linker can't find the SDL2 library. Before trying anything else, could you run sudo ldconfig and try compiling again afterwards, please?

If that still doesn't work, then either sdl2 is not called libSDL2.so on your system, or it's placed somewhere not in the linker's search path. I'm on my phone now, so I can't easily check

[k0pernicus]

Thank you for this quick comment.

I've already launch ldconfig, and the SDL2 lib is already linked:

ldconfig -p | grep SDL
    libSDL2-2.0.so.0 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
    libSDL2-2.0.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so
    libSDL_image-1.2.so.0 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libSDL_image-1.2.so.0
    libSDL-1.2.so.0 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0

So, i think I have to modify the linker's search path to search in /usr/lib/x86_64_linux-gnu/ to find this library, right?

He can't find this library because he goes to a specific directory for 32 bits libraries?

[cristicbz]

Do you have a /usr/lib/x86_64-linux-gnu/libSDL2.so symbolic link on your system? If not, could you try creating it? i.e.

sudo ln -s /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so /usr/lib/x86_64-linux-gnu/libSDL2.so

This is what I've got (on Ubuntu):

$ ls -l /usr/lib/x86_64-linux-gnu/libSDL2.so
lrwxrwxrwx 1 root root 20 May 15  2014 /usr/lib/x86_64-linux-gnu/libSDL2.so -> libSDL2-2.0.so.0.2.0

[k0pernicus]

Unfortunately yes:

ls -l /usr/lib/x86_64-linux-gnu/libSDL2.so       
lrwxrwxrwx 1 root root 20 mai   15  2014 /usr/lib/x86_64-linux-gnu/libSDL2.so -> libSDL2-2.0.so.0.2.0

The command canno't be executed also:

sudo ln -s /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so /usr/lib/x86_64-linux-gnu/libSDL2.so
ln: failed to create symbolic link ‘/usr/lib/x86_64-linux-gnu/libSDL2.so’: File exists

I have already try to remove the library and to purge dependencies before install those again but no results... :-/

[cristicbz]

Hmm, not giving up yet! What do you have in your LIBRARY_PATH and LD_LIBRARY_PATH environment variables? In particular do they contain /usr/lib/x86_64-linux-gnu?

[k0pernicus]

No, that's true!

But after the modification, the error still the same...

echo $LIBRARY_PATH                                                                       
/usr/lib/x86_64-linux-gnu

echo $LD_LIBRARY_PATH                                                                    
/usr/lib/x86_64-linux-gnu

This is the complete error of the build:

Compiling rs_doom v0.0.7 (file:///home/k0pernicus/Documents/rust-doom)

error: linking with `cc` failed: exit code: 1

note: "cc" "-Wl,--as-needed" "-m32" "-L" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib" "/home/k0pernicus/Documents/rust-doom/target/release/rs_doom.0.o" "-o" "/home/k0pernicus/Documents/rust-doom/target/release/rs_doom" "-Wl,--gc-sections" "-pie" "-Wl,-O1" "-nodefaultlibs" "-L" "/home/k0pernicus/Documents/rust-doom/target/release" "-L" "/home/k0pernicus/Documents/rust-doom/target/release/deps" "-L" "/home/k0pernicus/Documents/rust-doom/target/release/build/miniz-sys-d19b88f9ef21a81d/out" "-L" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib" "-L" "/home/k0pernicus/Documents/rust-doom/.rust/lib/i686-unknown-linux-gnu" "-L" "/home/k0pernicus/Documents/rust-doom/lib/i686-unknown-linux-gnu" "-Wl,-Bstatic" "-Wl,-Bdynamic" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libgame-8cfee425b6ee9879.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libenv_logger-bbd82f3547b4db71.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libgetopts-bd82d57ca5684ae5.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libwad-cd615ceff76ea334.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libtime-5546927e45303414.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libgfx-6bebdf3762ca88b8.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/liblog-6e27e2da5513596d.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libmath-7b32f5d43a780379.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libtoml-f9d4bcccaf6c49db.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libglium_sdl2-55be2a6928c25ef0.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libregex-44ebda3c16a8018d.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libaho_corasick-d05abe6e803a25f9.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libmemchr-c271e615ca8016c2.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libglium-21928d8511e45830.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libnalgebra-eec5da6a2d5e5f5b.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libglutin-bf76ed33700ba108.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libwayland_kbd-de9a367fb8f54e36.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libosmesa_sys-bcfb4e9f5ccba110.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libcgmath-fee5293301deaa40.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libmmap-3228d1a911ccf2d6.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libgl_common-a5d890954f8be2d6.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libimage-6bcbcef3c1f7139e.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libgif-caf31349e2797a43.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libcolor_quant-c8840af87a039b7f.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libpng-b46bdcdffbade93e.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/liblzw-b06eded40745f4f3.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libwayland_window-a0302ed36290a7bb.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libtempfile-10bff676904f21f2.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libbyteorder-a9d27879d7f2c887.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libenum_primitive-b5b95bcd4494e441.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libsmallvec-8e27dc6b52754509.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libflate2-78d4363886f4b66b.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libminiz_sys-d19b88f9ef21a81d.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libx11_dl-83a05ff1ef61de57.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libdylib-daffd2693659ccef.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libbacktrace-e4c0ebe143c52b5d.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libdbghelp-040983399761f987.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libkernel32-c606ce60307b6481.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libdebug_builders-4717471a4c16d259.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libbacktrace_sys-e659868d1ba4bec9.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libwinapi-3afcd2170e6034e1.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libbitflags-83dc6fc5ecc9dd71.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libsdl2-21b95ebba2160a5f.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libsdl2_sys-b5d0e29d4b0af36c.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libnum-2ece09fbdcaec573.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/librustc_serialize-e13845f83f5be3dc.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libcommon-bea1f988784460d3.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/librand-a5a71c849766362c.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libshared_library-df6a4ed1de1c004a.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libwayland_client-92ee4c95af297731.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libdlib-464d32cdfc50ec82.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/liblazy_static-512518894775e8b8.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/liblibc-165b5479aec0459c.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libbitflags-d8aad5e08369cb92.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libregex_syntax-3bd7600d419463d3.rlib" "/home/k0pernicus/Documents/rust-doom/target/release/deps/libcfg_if-f8ac1d2a9eed8e25.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/libstd-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/libcollections-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/librustc_unicode-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/librand-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/liballoc-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/liballoc_jemalloc-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/liblibc-10cbabc2.rlib" "/usr/local/lib/rustlib/i686-unknown-linux-gnu/lib/libcore-10cbabc2.rlib" "-l" "rt" "-l" "SDL2" "-l" "SDL2" "-l" "c" "-l" "m" "-l" "dl" "-l" "pthread" "-l" "gcc_s" "-l" "rt" "-l" "pthread" "-l" "c" "-l" "m" "-l" "compiler-rt"

note: /usr/bin/ld: cannot find -lSDL2
/usr/bin/ld: cannot find -lSDL2
collect2: error: ld returned 1 exit status

error: aborting due to previous error
Could not compile `rs_doom`.

I try to install the 32 bits of SDL2 library (because the linker try to link with some i386 libs I think), but if this library and dependances are installed, the system erase my 64 bits configuration... This is really annoying :(

[cristicbz]

It's true that there's the "m32" flag and the i686 paths in there that are a bit worrying; I don't really know why it's trying to link as 32 bits :(. I think this might be to do with the rust sdl2 library misidentifying your system as 32 bits.

[k0pernicus]

I think so...

I'll create an issue in rust-sdl2, and, if I have any solution for this problem, I'll note that one bellow.

Thanks a lot for your patience :-)

[cristicbz]

What do you get if you run pkg-config sdl2 --libs? If you don't have pkg-config could you try installing it, then doing cargo clean && cargo build? I think SDL2 is trying to use it.

[k0pernicus]

This is the result of the command:

$pkg-config sdl2 --libs
-Wl,-rpath,/usr/local/lib -L/usr/local/lib -lSDL2 -lpthread

[cristicbz]

Interesting.... As one last attempt, could you try creating a symbolic link of SDL2 in /usr/local/lib ?

sudo ln -s /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so /usr/local/lib

[k0pernicus]

Still the same error - nothing have changed :-/

[cristicbz]

I'm sorry this is not working out for you. I think you're right though; the problem is probably the 32 bit issue.

[k0pernicus]

It's ok now - the script installer of Rust doesn't install a 64 bits Rust compiler on a 64 bits OS...

So, I've already download and install a 64 bits Rust compiler and all works fine now :-)

Thanks for all!!!