Compiling problems cannot find crt1 o

Question

I have a virtual Debian system which I use to develop   Today I wanted to try llvm clang   After installing clang I can t compile my old c-projects  with gcc   This is the error        usr bin ld  cannot find crt1 o  No such file or directory  usr bin ld  cannot find crti o  No such file or directory collect2  ld returned 1 exit status       I uninstalled clang and it still did not work   Does anyone have any idea how I can fix this

User · Answer

It seems that while you were playing with llvm/clang you(or the package manager) removed previously existing standard C library development package(eglibc on Debian) or maybe you didn't have it installed in the first place, thus you need to reinstall it, now that you reverted back to gcc.

You can do so like this on Debian:

aptitude show libc-dev

Ubuntu:

apt-get install libc-dev

On Ubuntu, if you don't have libc-dev, since I cannot find it on packages.ubuntu.com, you can try installing libc6-dev directly.

Or on Redhat like systems:

yum install glibc-devel

NB: Although you were briefly answered in the comments, here is an answer just so there is one on record in case someone encounters this one and might be looking for an answer, but not in the comments or the comment is not explicit enough for them.

User · Answer

If you re using Debian s Testing version  called  wheezy   then you may have been bitten by the move to multiarch  More about Debian s multiarch here  http   wiki debian org Multiarch  Basically  what is happening is various architecture specific libraries are being moved from traditional places in the file system to new architecture specific places  This is why  usr bin ld is confused   You will find crt1 o in both  usr lib64  and  usr lib i386-linux-gnu  now and you ll need to tell your toolchain about that  Here is some documentation on how to do that  http   wiki debian org Multiarch LibraryPathOverview  Note that merely creating a symlink will only give you one architecture and you d be essentially disabling multiarch  While this may be what you want it might not be the optimal solution

User · Answer

What helped me is to create a symbolic link   sudo ln -s  usr lib x86 64-linux-gnu  usr lib64

User · Answer

As explained in crti o file missing   it s better to use  gcc -print-search-dirs  to find out all the search path  Then create a link as explain above  sudo ln -s  to point to the location of crt1 o

User · Answer

I solved it as follows   1  try to locate ctr1 o and ctri o files by using find -name ctr1 o  I got the following in my computer    usr lib i386-linux gnu  2  Add that path to PATH  also LIBRARY PATH  environment variable  in order to see which is the name  type env command in the Terminal     PATH  usr lib i386-linux gnu  PATH  export PATH

User · Answer

After reading the http   wiki debian org Multiarch LibraryPathOverview that jeremiah posted  i found the gcc flag that works without the symlink   gcc -B usr lib x86 64-linux-gnu hello c   So  you can just add -B usr lib x86 64-linux-gnu to the CFLAGS variable in your Makefile

User · Answer

use gcc -B lib path containing crt  o

User · Answer

In my case Ubuntu 16 04 I have no crti o at all     find  usr  -name crti    So I install developer libc6-dev package   sudo apt-get install libc6-dev

User · Answer

In my case  the crti o error was entailed by the execution path configuration from Matlab  For instance  you cannot perform a file if you have not set the path of your execution directory earlier  To do this  File   setPath   add your directory and save

User · Answer

configure --disable-multilib  works for it

User · Answer

This worked for me with Ubuntu 16 04    LIBRARY PATH  usr lib x86 64-linux-gnu   export LIBRARY PATH

User · Answer

To get RHEL 7 64-bit to compile gcc 4 8 32-bit programs  you ll need to do two things    Make sure all the 32-bit gcc 4 8 development tools are completely installed   sudo yum install glibc-devel i686 libgcc i686 libstdc  -devel i686 ncurses-devel i686  Compile programs using the -m32 flag  gcc pgm c -m32 -o pgm    stolen from here   How to Compile 32-bit Apps on 64-bit RHEL  - I only had to do step 1

User · Answer

Ran into this on CentOs 5 4  Noticed that lib64 contained the crt  o files  but lib did not  Installed glibc-devel through yum which installed the i386 bits and this resolved my issue

User · Answer

Debian   Ubuntu  The problem is you likely only have the gcc for your current architecture and that s 64bit  You need the 32bit support files  For that  you need to install them  sudo apt install gcc-multilib

User · Answer

This is a BUG reported in launchpad  but there is a workaround    Run this to see where these files are located    find  usr  -name crti   usr lib x86 64-linux-gnu crti o   then add this path to LIBRARY PATH variable    export LIBRARY PATH  usr lib x86 64-linux-gnu  LIBRARY PATH

User · Answer

Even I got the same compilation error when I was cross compiling i686-cm-linux-gcc   The below compilation option solved my problem    i686-cm-linux-gcc a c --sysroot  opt toolchain i686-cm-linux-gcc   Note  The sysroot should point to compiler directory where usr include available  In my case the toolchain is installed at  opt toolchain i686-cm-linux-gcc directory and usr include is also available in the same directory

User · Answer

I had the same problem today  I solved it by installing recommended packages  libc6-dev-mipsel-cross libc6-dev-mipsel-cross  libc-dev-mipsel-cross  This worked   sudo apt-get install libc6-dev-mipsel-cross

[gcc] Compiling problems: cannot find crt1.o

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