Installation

[Trent]

Hi,

I’m having a lot of trouble installing ellcc.
Given a blank install of a VM of a linux distribution,

What are the steps that will give me a working ellcc?
Every attempt I have done so far has been plauged with compile errors and missing commands.

[richKeymaster]

Hi Trent,

Could you post the errors you’re getting? I suspect your build is failing during the GNU part of the build because of some missing packages.

-Rich

[Trent]

As a base system I’m using an Ubuntu 13.10 amd64 minimal server install, on top of this I installed these packages through trial and error (missing commands or libraries in config scripts etc while running build)
“pkg-config flex bison libncurses5-dev zlib1g-dev libglib2.0-dev autoconf libtool texinfo groff”

However the error that it now gives me seems to be while compiling musl

y.tab.c:1447:16: error: implicit declaration of function ‘yylex’ is invalid in C99
[-Werror,-Wimplicit-function-declaration]
yychar = YYLEX;
^
y.tab.c:770:16: note: expanded from macro ‘YYLEX’
# define YYLEX yylex (&yylval, yyInput)
^
y.tab.c:2019:7: error: implicit declaration of function ‘yyerror’ is invalid in C99
[-Werror,-Wimplicit-function-declaration]
yyerror (param, yyInput, YY_(“syntax error”));
^
src/bsd/parsedate.y:570:1: error: static declaration of ‘yyerror’ follows non-static declaration
yyerror(struct dateinfo *param, const char **inp, const char *s)
^
y.tab.c:2019:7: note: previous implicit declaration is here
yyerror (param, yyInput, YY_(“syntax error”));
^
src/bsd/parsedate.y:801:1: error: static declaration of ‘yylex’ follows non-static declaration
yylex(YYSTYPE *yylval, const char **yyInput)
^
y.tab.c:1447:16: note: previous implicit declaration is here
yychar = YYLEX;
^
y.tab.c:770:16: note: expanded from macro ‘YYLEX’
# define YYLEX yylex (&yylval, yyInput)
^
4 errors generated.
make[1]: *** [src/bsd/parsedate.o] Error 1
make[1]: Leaving directory `/home/build/ellcc/libecc/src/musl’
make: *** [arm] Error 1

[Gordon]

Hi, I also tried installing on Ubuntu 64 bit 13.10, and had to install g++ and zlibs (I found this installed zlibs:
sudo apt-get –no-install-recommends -y build-dep qemu
)

However, after building for 3 hours it crashed: (Console tail follows)

ecc: /home/gordon/Applications/ellcc/llvm/lib/Analysis/LoopInfo.cpp:355: void llvm::Loop::getUniqueExitBlocks(llvm::SmallVectorImpl<llvm::BasicBlock*>&) const: Assertion `hasDedicatedExits() && “getUniqueExitBlocks assumes the loop has canonical form exits!”‘ failed.
0 ecc 0x00000000023d8b40 llvm::sys::PrintStackTrace(_IO_FILE*) + 32
1 ecc 0x00000000023d8774
2 libpthread.so.0 0x00002b460acf9bb0
3 libc.so.6 0x00002b460bb88f77 gsignal + 55
4 libc.so.6 0x00002b460bb8c5e8 abort + 328
5 libc.so.6 0x00002b460bb81d43
6 libc.so.6 0x00002b460bb81df2
7 ecc 0x000000000217b1c1
8 ecc 0x0000000001f845af
9 ecc 0x000000000218548f llvm::LPPassManager::runOnFunction(llvm::Function&) + 1375
10 ecc 0x00000000022c1963 llvm::FPPassManager::runOnFunction(llvm::Function&) + 643
11 ecc 0x00000000020f7525
12 ecc 0x00000000022c221b llvm::legacy::PassManagerImpl::run(llvm::Module&) + 795
13 ecc 0x00000000009ccfcf clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 2751
14 ecc 0x00000000009c82ce
15 ecc 0x0000000000b4d84b clang::ParseAST(clang::Sema&, bool, bool) + 491
16 ecc 0x00000000009c936d clang::CodeGenAction::ExecuteAction() + 77
17 ecc 0x0000000000845419 clang::FrontendAction::Execute() + 249
18 ecc 0x0000000000824a30 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 352
19 ecc 0x000000000080da79 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1753
20 ecc 0x00000000008072d8 cc1_main(char const**, char const**, char const*, void*) + 1256
21 ecc 0x00000000007e8f06 main + 614
22 libc.so.6 0x00002b460bb73de5 __libc_start_main + 245
23 ecc 0x00000000008060b2
Stack dump:
0. Program arguments: /home/gordon/Applications/ellcc/bin/ecc -cc1 -triple armv7-ellcc-linux-eabi -S -disable-free -main-file-name hash.cpp -mrelocation-model static -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -target-cpu cortex-a8 -target-feature +soft-float-abi -target-feature +vfp2 -target-feature -neon -target-abi aapcs -mfloat-abi soft -target-linker-version 2.23.52.20130913 -coverage-file /tmp/hash-09bc46.s -resource-dir /home/gordon/Applications/ellcc/bin/../libecc -dependency-file hash.d -MT hash.o -sys-header-deps -MP -D _XOPEN_SOURCE=700 -D _GNU_SOURCE -D dl_info=Dl_info -I ../../../../src/c++/libcxxabi/include -O1 -std=c++11 -fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir /home/gordon/Applications/ellcc/libecc/obj/arm/linux/c++ -ferror-limit 19 -fmessage-length 110 -mstackrealign -fno-signed-char -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -vectorize-slp -o /tmp/hash-09bc46.s -x c++ ../../../../src/c++/libcxx/src/hash.cpp
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass ‘CallGraph Pass Manager’ on module ‘../../../../src/c++/libcxx/src/hash.cpp’.
4. Running pass ‘Loop Pass Manager’ on function ‘@_ZNSt3__112__next_primeEj’
5. Running pass ‘Loop Invariant Code Motion’ on basic block ‘%while.body’
ecc: error: unable to execute command: Aborted (core dumped)
ecc: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 3.5 (trunk)
Target: arm-ellcc-linux-eabi
Thread model: posix
ecc: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script.
ecc: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
ecc: note: diagnostic msg: /tmp/hash-b3b7c5.cpp
ecc: note: diagnostic msg: /tmp/hash-b3b7c5.sh
ecc: note: diagnostic msg:

********************
make[4]: *** [hash.o] Error 254
make[4]: Leaving directory `/home/gordon/Applications/ellcc/libecc/obj/arm/linux/c++’
make[3]: *** [install] Error 1
make[3]: Leaving directory `/home/gordon/Applications/ellcc/libecc/obj/arm/linux’
make[2]: *** [install] Error 1
make[2]: Leaving directory `/home/gordon/Applications/ellcc/libecc/obj/arm’
make[1]: *** [install] Error 1
make[1]: Leaving directory `/home/gordon/Applications/ellcc/libecc/obj’
make: *** [other-libs] Error 2

Not sure if I should start again (as I interrupted it during the first pass).

Is there an environment ellcc is tested to build in? – Any virtual machine images that have it working? I’ve failed to make much progress with Mavericks, and latest Ubuntu while being more promising so far still doesn’t make it.

[richKeymaster]

Hi Gordon,

That turned out to be a bug in LLVM that was subsequently fixed: http://llvm.org/bugs/show_bug.cgi?id=18643

The fix has been incorporated in ELLCC.

The good news is that you’re almost there. You are building the runtime libraries.

You can get to a better place by

cd ellcc
# Get the latest sources/
svn update
# Build a new compiler.
cd llvm-build
make install
# Build the libraries.
cd ../libecc
make

-Rich

[Gordon]

Hi Rich, getting closer, building cleanly on 12.04LTS to try to minimize any new unsupported wrinkles. I have the following message to contend with:

make[2]: Entering directory `/home/gordon/Applications/ellcc/libecc/expat-build/arm/linux’
/bin/bash ./libtool –silent –mode=compile /home/gordon/Applications/ellcc/libecc/../bin/ecc -target arm-ellcc-linux-eabi -march=armv7 -mfpu=vfp -mfloat-abi=softfp -no-integrated-as -g -Qunused-arguments -Wno-unneeded-internal-declaration -Wno-cast-align -Wno-incompatible-pointer-types -Wno-string-plus-int -Wno-pointer-sign -Wno-array-bounds -Wno-dangling-else -Wno-int-to-pointer-cast -I../../../src/expat/lib -I. -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H -o lib/xmlparse.lo -c ../../../src/expat/lib/xmlparse.c
../../../src/expat/lib/xmlparse.c:83:2: error: memmove does not exist on this
platform, nor is a substitute available
#error memmove does not exist on this platform, nor is a substitute available
^
1 error generated.
make[2]: *** [lib/xmlparse.lo] Error 1
make[2]: Leaving directory `/home/gordon/Applications/ellcc/libecc/expat-build/arm/linux’
make[1]: *** [arm.expat.build] Error 2

[richKeymaster]

Hi Gordon,

Update one more time:

cd ellcc
# Get the latest sources/
svn update
# Build the libraries.
cd ../libecc
make

-Rich

[Gordon]

made without error – progressing to next step – thx 🙂

[Gordon]

Hi Rich, i built again, and it seemed to work ok,

Then i went to make check, which mostly worked, but had the following errors, just wondering if these are lint in the tests, or there are some problems I still need to chase:

********************
Testing Time: 109.24s
********************
Failing Tests (9):
LLVM :: BugPoint/crash-narrowfunctiontest.ll
LLVM :: BugPoint/metadata.ll
LLVM :: BugPoint/remove_arguments_test.ll
LLVM :: Feature/load_module.ll
LLVM :: LTO/cfi_endproc.ll
LLVM :: LTO/current-section.ll
LLVM :: LTO/linkonce_odr_func.ll
LLVM :: LTO/runtime-library.ll
LLVM :: LTO/triple-init.ll

Expected Passes : 9611
Expected Failures : 54
Unsupported Tests : 35
Unexpected Failures: 9
make[2]: *** [check-local] Error 1
make[2]: Leaving directory `/home/gordon/Applications/ellcc/llvm-build/test’
make[1]: *** [check] Error 2
make[1]: Leaving directory `/home/gordon/Applications/ellcc/llvm-build’
make: *** [check] Error 1

[richKeymaster]

Hi Gordon,

Those failures are expected for ELLCC. I am building everything statically currently and those tests dynamically load stuff. Don’t worry about them right now. Eventually we’ll build the shared libraries also.

-Rich

[Gordon]

Hi Rich, I get the feeling I’m almost there:
I ran the hello world example:

gordon@ubuntu:~/Applications/armwork$ vi hello.c
gordon@ubuntu:~/Applications/armwork$ ../ellcc/bin/ecc -target mips-ellcc-linux hello.c
gordon@ubuntu:~/Applications/armwork$ ../ellcc/bin/qemu-mips a.out
gordon@ubuntu:~/Applications/armwork$ ../ellcc/bin/qemu-mips a.out
hello world

Success!! – BUT, then I ran the cross compiler for arm and got this error:

gordon@ubuntu:~/Applications/armwork$ ../ellcc/bin/ecc -target arm-ellcc-linux helloarm.c
/home/gordon/Applications/armwork/../ellcc/bin/ecc-ld: error: Source object /home/gordon/Applications/ellcc/bin/../libecc/lib/arm/linux/libc.a(__libc_start_main.o) has EABI version 0, but target a.out has EABI version 5
/home/gordon/Applications/armwork/../ellcc/bin/ecc-ld: failed to merge target specific data of file /home/gordon/Applications/ellcc/bin/../libecc/lib/arm/linux/libc.a(__libc_start_main.o)

Is there a build specific wrinkle for arm?

Gordon

[Gordon]

I’m trying to specify futher:

gordon@ubuntu:~/Applications/armwork$ ../ellcc/bin/ecc -target arm-ellcc-linux -mcpu=arm926ej-s helloarm.c /home/gordon/Applications/armwork/../ellcc/bin/ecc-ld: error: Source object /home/gordon/Applications/ellcc/bin/../libecc/lib/arm/linux/libc.a(__libc_start_main.o) has EABI version 0, but target a.out has EABI version 5

other command line options like -march and -meabi are either unused or not understood.

I think the EABI version should be 5 for this processor, while the output format is EABI5, the linker believes the object file is EABI0.

(My first real goal is an application to run on a BusyBox linux build running on a arm926ej-s.)

[richKeymaster]

Hi Gordon,

This worked for me:

ellcc/bin/ecc -target arm-ellcc-linux-eabi -march=armv7 -mfpu=vfp -mfloat-abi=softfp -no-integrated-as helloarm.c

I’m not sure why the integrated assembler is failing with the latest LLVM. I’ll look into it.

-Rich

[Gordon]

I don’t understand what’s different:
I tried you command:

gordon@ubuntu:~/armwork$ ../ellcc/bin/ecc -target arm-ellcc-linux-eabi -march=armv7 -mfpu=vfp -mfloat-abi=softfp -no-integrated-as helloarm.c
ecc: error: unable to execute command: Executable “arm-elf-as” doesn’t exist!
ecc: error: assembler command failed with exit code 1 (use -v to see invocation)

I cut off the last option and got:

gordon@ubuntu:~/armwork$ ../ellcc/bin/ecc -target arm-ellcc-linux-eabi -march=armv7 -mfpu=vfp -mfloat-abi=softfp helloarm.c/home/gordon/armwork/../ellcc/bin/ecc-ld: error: Source object /home/gordon/ellcc/bin/../libecc/lib/arm/linux/libc.a(__libc_start_main.o) has EABI version 0, but target a.out has EABI version 5
/home/gordon/armwork/../ellcc/bin/ecc-ld: failed to merge target specific data of file /home/gordon/ellcc/bin/../libecc/lib/arm/linux/libc.a(__libc_start_main.o)
/home/gordon/armwork/../ellcc/bin/ecc-ld: error: Source object /home/gordon/ellcc/bin/../libecc/lib/arm/linux/libc.a(exit.o) has EABI version 0, but target a.out has EABI version 5
/home/gordon/armwork/../ellcc/bin/ecc-ld: failed to merge target specific data of file /home/gordon/ellcc/bin/../libecc/lib/arm/linux/libc.a(exit.o)
/home/gordon/armwork/../ellcc/bin/ecc-ld: error: Source object /home/gordon/ellcc/bin/../libecc/lib/arm/linux/libc.a(libc.o) has EABI version 0, but target a.out has EABI version 5
/home/gordon/armwork/../ellcc/bin/ecc-ld: failed to merge target specific data of file /home/gordon/ellcc/bin/../libecc/lib/arm/linux/libc.a(libc.o)
/h

Maybe I’m missing something…

(What does “-no-integrated-as” do?)

[richKeymaster]

The -no-integrated-as flag tells the compiler not to use the built-in ARM assembler and to use the external (gnu) assembler instead.

Your bin directory should look like this:

[~] dev% ls ellcc/bin
arm-elf-as*     ecc-nm*            llvm-link*          qemu-i386*
bmake*          ecc-objcopy*       llvm-mc*            qemu-microblaze*
bmake.old*      ecc-objdump*       llvm-mcmarkup*      qemu-mips*
bugpoint*       ecc-ranlib*        llvm-nm*            qemu-mipsel*
c-index-test*   ecc-readelf*       llvm-objdump*       qemu-ppc*
clang-check*    ecc-size*          llvm-ranlib@        qemu-ppc64*
clang-format*   ecc-strings*       llvm-readobj*       qemu-ppc64abi32*
clang-tblgen*   ecc-strip*         llvm-rtdyld*        qemu-sparc*
count*          FileCheck*         llvm-size*          qemu-system-arm*
ecc*            i386-elf-as*       llvm-stress*        qemu-system-i386*
ecc++@          llc*               llvm-symbolizer*    qemu-system-microblaze*
ecc-addr2line*  lli*               llvm-tblgen*        qemu-system-mips*
ecc-ar*         lli-child-target*  macho-dump*         qemu-system-mipsel*
ecc-as*         llvm-ar*           microblaze-elf-as*  qemu-system-ppc*
ecc-c++filt*    llvm-as*           mips-elf-as*        qemu-system-ppc64*
ecc-elfedit*    llvm-bcanalyzer*   ncurses5-config*    qemu-system-sparc*
ecc-embedspu*   llvm-config*       not*                qemu-system-x86_64*
ecc-gdb*        llvm-cov*          opt*                qemu-x86_64*
ecc-gprof*      llvm-diff*         ppc64-elf-as*       sparc-elf-as*
ecc-ld*         llvm-dis*          ppc-elf-as*         x86_64-elf-as*
ecc-ld.bfd*     llvm-dwarfdump*    qemu-arm*
ecc-lit*        llvm-extract*      qemu-armeb*
[~] dev% 

If arm-elf-as isn’t there, try

cd ~/ellcc/gnu/gnu-build/binutils
make install

Maybe the install didn’t occur because of your earlier build failures.

-Rich

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