Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 1150985 - Clang does not work; looks for include and lib in a wrong place
Summary: Clang does not work; looks for include and lib in a wrong place
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: llvm
Version: 21
Hardware: aarch64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Peter Robinson
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: ARM64, F-ExcludeArch-aarch64
TreeView+ depends on / blocked
 
Reported: 2014-10-09 11:24 UTC by David Abdurachmanov
Modified: 2015-09-16 13:48 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-09-16 13:48:00 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description David Abdurachmanov 2014-10-09 11:24:38 UTC 
Description of problem:

Clang looks for headers and libraries in a wrong place on AArch64. 

$ clang++ -std=c++11 tc.cc
tt.cc:1:10: fatal error: 'list' file not found
#include <list>
         ^
1 error generated.


How reproducible:

Compile any C++ code, e.g., example from en.cppreference.com

cat << EOF > tc.cc
#include <list>
#include <string>
#include <iostream>
 
template<typename T>
std::ostream& operator<<(std::ostream& s, const std::list<T>& v) {
    s.put('[');
    char comma[3] = {'\0', ' ', '\0'};
    for (const auto& e : v) {
        s << comma << e;
        comma[0] = ',';
    }
    return s << ']';
}
 
int main() 
{
    // c++11 initializer list syntax:
    std::list<std::string> words1 {"the", "frogurt", "is", "also", "cursed"};
    std::cout << "words1: " << words1 << '\n';
 
    // words2 == words1
    std::list<std::string> words2(words1.begin(), words1.end());
    std::cout << "words2: " << words2 << '\n';
 
    // words3 == words1
    std::list<std::string> words3(words1);
    std::cout << "words3: " << words3 << '\n';
 
    // words4 is {"Mo", "Mo", "Mo", "Mo", "Mo"}
    std::list<std::string> words4(5, "Mo");
    std::cout << "words4: " << words4 << '\n';
}
EOF

clang++ -std=c++11 tc.cc

The libraries are installed at /usr/lib/gcc/aarch64-redhat-linux/4.8.1/ When I was debugging Clang driver (on F19) on aarch64 and x86_64 it looked like driver never used GCC version in the paths. Thus is went for /usr/lib/gcc/aarch64-redhat-linux.

For headers defaults:
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/bin/../lib/clang/3.4.1/include
 /usr/include
 /usr/lib/gcc/aarch64-redhat-linux/4.8.1/include
End of search list.

Missing /usr/include/c++/4.8.1

The followed is enough to test lib paths:

int main(void) {
  return 0;
}

Clang fails with:

 "/usr/bin/ld" --hash-style=gnu --no-add-needed --build-id --eh-frame-hdr -m aarch64linux -dynamic-linker /lib/ld-linux-aarch64.so.1 -o a.out /lib/../lib64/crt1.o /lib/../lib64/crti.o crtbegin.o -L/lib/../lib64 -L/usr/lib/../lib64 -L/lib -L/usr/lib /tmp/test-0ff054.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc crtend.o /lib/../lib64/crtn.o
/usr/bin/ld: cannot find crtbegin.o: No such file or directory
/usr/bin/ld: cannot find -lstdc++
/usr/bin/ld: cannot find -lgcc_s
/usr/bin/ld: cannot find -lgcc
clang: error: linker command failed with exit code 1 (use -v to see invocation)

While on x86_64 it has /usr/bin/../lib/gcc/x86_64-redhat-linux/4.8.2

Clang driver logic for finding the paths needs to be reviewed.
Comment 1 Peter Robinson 2014-10-09 12:06:39 UTC 
I'm aware of some of these issues. We're awaiting 3.5 to land because there's been some massive improvements and changes for aarch64 in that release.
Comment 2 Peter Robinson 2014-10-09 12:07:47 UTC 
> Clang fails with:
> 
>  "/usr/bin/ld" --hash-style=gnu --no-add-needed --build-id --eh-frame-hdr -m
> aarch64linux -dynamic-linker /lib/ld-linux-aarch64.so.1 -o a.out
> /lib/../lib64/crt1.o /lib/../lib64/crti.o crtbegin.o -L/lib/../lib64
> -L/usr/lib/../lib64 -L/lib -L/usr/lib /tmp/test-0ff054.o -lstdc++ -lm
> -lgcc_s -lgcc -lc -lgcc_s -lgcc crtend.o /lib/../lib64/crtn.o
> /usr/bin/ld: cannot find crtbegin.o: No such file or directory
> /usr/bin/ld: cannot find -lstdc++
> /usr/bin/ld: cannot find -lgcc_s
> /usr/bin/ld: cannot find -lgcc
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
> 
> While on x86_64 it has /usr/bin/../lib/gcc/x86_64-redhat-linux/4.8.2

What release are you using? F-21 has gcc 4.9.x not 4.8.x
Comment 3 David Abdurachmanov 2014-10-09 12:22:18 UTC 
I am still running F19 with Clang 3.4 on the boards, but hrw (IRC) double checked it on F21.
Comment 4 Peter Robinson 2014-10-09 12:25:42 UTC 
(In reply to David Abdurachmanov from comment #3)
> I am still running F19 with Clang 3.4 on the boards, but hrw (IRC) double
> checked it on F21.

F-19 isn't supported. Please move to F-21. There are numerous toolchain issues and changes between the two.
Comment 5 Marcin Juszkiewicz 2015-09-16 13:32:14 UTC 
15:28 hrw@pinkiepie-rawhide:devel$ clang++ --verbose hello.cc 
clang version 3.6.2 (tags/RELEASE_362/final)
Target: aarch64-redhat-linux-gnu
Thread model: posix
Found candidate GCC installation: /bin/../lib/gcc/aarch64-redhat-linux/5.2.1
Found candidate GCC installation: /usr/lib/gcc/aarch64-redhat-linux/5.2.1
Selected GCC installation: /bin/../lib/gcc/aarch64-redhat-linux/5.2.1
Candidate multilib: .;@m64
Selected multilib: .;@m64
 "/usr/bin/clang" -cc1 -triple aarch64-redhat-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name hello.cc -mrelocation-m
odel static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu generic -target-feature +
neon -target-abi aapcs -target-linker-version 2.25 -v -dwarf-column-info -resource-dir /usr/bin/../lib/clang/3.6.2 -internal-isystem /bin/../lib/gcc/aarch
64-redhat-linux/5.2.1/../../../../include/c++/5.2.1 -internal-isystem /bin/../lib/gcc/aarch64-redhat-linux/5.2.1/../../../../include/c++/5.2.1/aarch64-red
hat-linux -internal-isystem /bin/../lib/gcc/aarch64-redhat-linux/5.2.1/../../../../include/c++/5.2.1/backward -internal-isystem /usr/local/include -intern
al-isystem /usr/bin/../lib/clang/3.6.2/include -internal-externc-isystem /usr/include -internal-externc-isystem /usr/lib/gcc/aarch64-redhat-linux/5.1.1/in
clude -fdeprecated-macro -fdebug-compilation-dir /home/hrw/devel -ferror-limit 19 -fmessage-length 154 -mstackrealign -fallow-half-arguments-and-returns -
fno-signed-char -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/hello-409df4.o -x c++ hello.cc
clang -cc1 version 3.6.2 based upon LLVM 3.6.2 default target aarch64-redhat-linux-gnu
ignoring nonexistent directory "/usr/lib/gcc/aarch64-redhat-linux/5.1.1/include"
#include "..." search starts here:
#include <...> search starts here:
 /bin/../lib/gcc/aarch64-redhat-linux/5.2.1/../../../../include/c++/5.2.1
 /bin/../lib/gcc/aarch64-redhat-linux/5.2.1/../../../../include/c++/5.2.1/aarch64-redhat-linux
 /bin/../lib/gcc/aarch64-redhat-linux/5.2.1/../../../../include/c++/5.2.1/backward
 /usr/local/include
 /usr/bin/../lib/clang/3.6.2/include
 /usr/include
End of search list.
Comment 6 Marcin Juszkiewicz 2015-09-16 13:48:00 UTC 
version rawhide has it sorted out

then it crashes - bug 1227460
Note You need to log in before you can comment on or make changes to this bug.