[llvm-dev] Compiling SAFECode poolalloc in cygwin create different libraries compared to linux.
John Criswell via llvm-dev
llvm-dev at lists.llvm.org
Wed Oct 14 08:55:11 PDT 2015
On 10/14/15 11:44 AM, kiran pawar wrote:
> Hi John,
> Yes I am working with Nikhil.
Excellent.
> I compiled Clang 3.2 in Cygwin using gcc ( note- with clang there were
> lot of errors during compilation). Going ahead, Installation is
> successful for me.
>
> However there new issue with SAFECode clang installed in cygwin.
>
> If you check below snippet it looks like clang invoke gcc which
> in-turn fails to recognize ‘-fmemsafety’ and so sample.exe is not created.
> Any clue why clang fallback to gcc ? On my linux machine I do not see
> gcc invocation.
My best guess is that the Clang compiler driver is written to use gcc to
link object files together (as opposed to calling ld directly). Note
that Clang runs clang to create /tmp/sample-T1WCmN.s (which I assume is
the assembly code created by Clang). When I modified Clang to pass the
"-fmemsafety" option from the Clang compiler driver to the Clang
compiler (yes, Clang runs *itself* to compile code), I must have done it
in a way that also causes Clang to pass "-fmemsafety" to the linker
command line also (which works if Clang is performing the link but not
if GCC is).
Take a look at safecode/tools/clang/lib/Driver/Tools.cpp. The method
Clang::ConstructJob() adds the "-fmemsafety" option to the command
line. You may need to modify Tools.cpp so that the code that constructs
the link command line remove this option (and other SAFECode options).
That's my best guess at the moment.
Regards,
John Criswell
>
> ==============
> $ clang -v -g -fmemsafety -o sample sample.c
> -L/home/kpawar/SAFECode/LLVM_INSTALL/lib
> -I/home/kpawar/SAFECode/LLVM_INSTALL/include
> clang version 3.2 (:
> http://llvm.org/svn/llvm-project/safecode/branches/release_32/tools/clang)
> (llvm/branches/release_32 ^/llvm/branches/release_32 250143)
> Target: i386-pc-cygwin
> Thread model: posix
> "/home/kpawar/SAFECode/LLVM_INSTALL/bin/clang" -cc1 -triple
> i386-pc-cygwin -S -disable-free -main-file-name sample.c
> -mrelocation-model static -mdisable-fp-elim -fmath-errno
> -mconstructor-aliases -target-cpu pentium4 -target-linker-version
> 2.25.2 -momit-leaf-frame-pointer -v -g -resource-dir
> /home/kpawar/SAFECode/LLVM_INSTALL/bin/../lib/clang/3.2 -I
> /home/kpawar/SAFECode/LLVM_INSTALL/include -fmodule-cache-path
> /var/tmp/clang-module-cache -fno-dwarf-directory-asm
> -fdebug-compilation-dir /home/kpawar/Documents -ferror-limit 19
> -fmessage-length 237 -fmemsafety -mstackrealign -fno-use-cxa-atexit
> -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -o
> /tmp/sample-T1WCmN.s -x c sample.c
> clang -cc1 version 3.2 based upon LLVM 3.2svn default target
> i386-pc-cygwin
> ignoring nonexistent directory "/usr/local/include"
> #include "..." search starts here:
> #include <...> search starts here:
> /home/kpawar/SAFECode/LLVM_INSTALL/include
> /home/kpawar/SAFECode/LLVM_INSTALL/bin/../lib/clang/3.2/include
> /usr/include/w32api
> /usr/include
> End of search list.
> "*/usr/bin/gcc" -v -fmemsafety
> -L/home/kpawar/SAFECode/LLVM_INSTALL/lib -I
> /home/kpawar/SAFECode/LLVM_INSTALL/include -c -m32 -o
> /tmp/sample-5Zz17i.o -x assembler /tmp/sample-T1WCmN.s
> Using built-in specs.*
> COLLECT_GCC=/usr/bin/gcc
> gcc: error: unrecognized command line option ‘-fmemsafety’
> Target: i686-pc-cygwin
> Configured with:
> /cygdrive/i/szsz/tmpp/gcc/gcc-4.9.3-1.i686/src/gcc-4.9.3/configure
> --srcdir=/cygdrive/i/szsz/tmpp/gcc/gcc-4.9.3-1.i686/src/gcc-4.9.3
> --prefix=/usr --exec-prefix=/usr --localstatedir=/var
> --sysconfdir=/etc --docdir=/usr/share/doc/gcc
> --htmldir=/usr/share/doc/gcc/html -C --build=i686-pc-cygwin
> --host=i686-pc-cygwin --target=i686-pc-cygwin
> --without-libiconv-prefix --without-libintl-prefix
> --libexecdir=/usr/lib --enable-shared --enable-shared-libgcc
> --enable-static --enable-version-specific-runtime-libs
> --enable-bootstrap --enable-__cxa_atexit --with-dwarf2
> --with-arch=i686 --with-tune=generic --disable-sjlj-exceptions
> --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++
> --enable-graphite --enable-threads=posix --enable-libatomic
> --enable-libgomp --disable-libitm --enable-libquadmath
> --enable-libquadmath-support --enable-libssp --enable-libada
> --enable-libjava --enable-libgcj-sublibs --disable-java-awt
> --disable-symvers --with-ecj-jar=/usr/share/java/ecj.jar --with-gnu-ld
> --with-gnu-as --with-cloog-include=/usr/include/cloog-isl
> --without-libiconv-prefix --without-libintl-prefix --with-system-zlib
> --enable-linker-build-id
> Thread model: posix
> gcc version 4.9.3 (GCC)
> clang: error: assembler (via gcc) command failed with exit code 1 (use
> -v to see invocation)
>
> ============
>
> ~ Kiran
>
> On Wed, Oct 14, 2015 at 7:06 PM, John Criswell <jtcriswel at gmail.com
> <mailto:jtcriswel at gmail.com>> wrote:
>
> Dear Kiran,
>
> Egads! It looks like /usr/bin/clang is crashing. This isn't a
> bug in SAFECode; it's a bug in Clang.
>
> What version of Clang are you using in Cygwin to compile SAFECode?
>
> One thing you should try is compiling Clang 3.2 in Cygwin (either
> using gcc or clang). SAFECode Clang is standard Clang modified
> with a few new command-line options to run the SAFECode
> transformation passes. If unmodified Clang 3.2 won't compile on
> Cygwin, then SAFECode Clang for LLVM 3.2 won't compile either.
>
> BTW, are you working with Nikhil?
>
> Regards,
>
> John Criswell
>
>
>
> On 10/13/15 11:29 PM, kiran pawar wrote:
>> Hi John,
>> That worked for me. I am using llvm 3.2 only and following
>> http://safecode.cs.illinois.edu/docs/Install.html
>>
>> So for I am able to make inside llvm/projects/poolalloc by doing
>> such cosmetic changes.
>> Now, when I tried to make inside llvm/projects/safecode, I see
>> another error.
>>
>> kpawar at KPAWAR-LT ~/SAFECode/LLVM_SRC/llvm/projects/safecode
>> $ /usr/bin/clang -cc1 -triple i386-pc-windows-cygnus -emit-obj
>> -disable-free -disable-llvm-verifier -main-file-name Parser.cpp
>> -mrelocation-model static -relaxed-aliasing -fmath-errno
>> -masm-verbose -mconstructor-aliases -target-cpu pentium4
>> -target-linker-version 2.25 -dwarf-column-info -coverage-file
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.o
>> -resource-dir /usr/bin/../lib/clang/i686-pc-cygwin/3.5.2
>> -dependency-file
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.d.tmp
>> -MP -MT
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.o
>> -MT
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.d
>> -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D
>> __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -D SAFECODE -D
>> SAFECODE -I /home/kpawar/SAFECode/LLVM_SRC/llvm/include -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/include -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse
>> -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include
>> -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -O3 -Woverloaded-virtual -Wcast-qual -Wall -Wno-deprecated -Wall
>> -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings
>> -Wcovered-switch-default -pedantic -fdebug-compilation-dir
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse
>> -ferror-limit 19 -fmessage-length 271 -fvisibility-inlines-hidden
>> -mstackrealign -fno-rtti -fobjc-runtime=gcc
>> -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops
>> -vectorize-slp -o
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.o
>> -x c++ tools/clang/lib/Parse/Parser.cpp
>> *Stack dump:*
>> 0. Program arguments: /usr/bin/clang -cc1 -triple
>> i386-pc-windows-cygnus -emit-obj -disable-free
>> -disable-llvm-verifier -main-file-name Parser.cpp
>> -mrelocation-model static -relaxed-aliasing -fmath-errno
>> -masm-verbose -mconstructor-aliases -target-cpu pentium4
>> -target-linker-version 2.25 -dwarf-column-info -coverage-file
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.o
>> -resource-dir /usr/bin/../lib/clang/i686-pc-cygwin/3.5.2
>> -dependency-file
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.d.tmp
>> -MP -MT
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.o
>> -MT
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.d
>> -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D
>> __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -D SAFECODE -D
>> SAFECODE -I /home/kpawar/SAFECode/LLVM_SRC/llvm/include -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/include -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse
>> -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include
>> -I
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -I /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/poolalloc/include
>> -O3 -Woverloaded-virtual -Wcast-qual -Wall -Wno-deprecated -Wall
>> -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings
>> -Wcovered-switch-default -pedantic -fdebug-compilation-dir
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse
>> -ferror-limit 19 -fmessage-length 271 -fvisibility-inlines-hidden
>> -mstackrealign -fno-rtti -fobjc-runtime=gcc
>> -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops
>> -vectorize-slp -o
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/Release+Asserts/Parser.o
>> -x c++ tools/clang/lib/Parse/Parser.cpp
>> 1.
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include/clang/Sema/DeclSpec.h:855:3:
>> current parser token 'SourceLocation'
>> 2.
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include/clang/Sema/DeclSpec.h:38:1:
>> parsing namespace 'clang'
>> 3.
>> /home/kpawar/SAFECode/LLVM_SRC/llvm/projects/safecode/tools/clang/lib/Parse/../../include/clang/Sema/DeclSpec.h:783:1:
>> parsing struct/union/class body 'UnqualifiedId'
>>
>>
>>
>> ~ Kiran
>>
>> On Tue, Oct 13, 2015 at 11:16 PM, John Criswell
>> <jtcriswel at gmail.com <mailto:jtcriswel at gmail.com>> wrote:
>>
>> Dear Kiran,
>>
>> Which version of LLVM/SAFECode are you using? Is it LLVM 3.2?
>>
>> I'm guessing that you're using LLVM 3.2 and trying to compile
>> safecode/tools/LTO (that's the only component that links in
>> AssistDS.a). You could try changing the following line:
>>
>> $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/libAssistDS.a:
>> $(POOLALLOC_OBJDIR)/$(BuildMode)/lib/AssistDS.a
>>
>> ... to:
>>
>> $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/libAssistDS.a:
>> $(POOLALLOC_OBJDIR)/$(BuildMode)/lib/libAssistDS.a
>>
>> You'll need to fix the problem for other libraries for which
>> SAFECode creates links in its own object tree (such as
>> libpoolalloc.a).
>>
>> That might fix the problem on Cygwin.
>>
>> Regards,
>>
>> John Criswell
>>
>>
>> On 10/13/15 2:36 AM, kiran pawar via llvm-dev wrote:
>>> Hi,
>>> On Linux I observed
>>>
>>> [root at localhost poolalloc]# find . -name *.a
>>> ./Release+Asserts/lib/LLVMDataStructure.a
>>> ./Release+Asserts/lib/poolalloc.a
>>> ./Release+Asserts/lib/AssistDS.a
>>> ./Release+Asserts/lib/libpoolalloc_fl_rt.a
>>> ./Release+Asserts/lib/libpoolalloc_rt.a
>>> ./Release+Asserts/lib/libpa_pre_rt.a
>>> ./Release+Asserts/lib/libcount.a
>>>
>>>
>>> On cygwin I observed
>>>
>>> kpawar at KPAWAR-LT ~/SAFECode/LLVM_SRC/llvm/projects/poolalloc
>>> $ find . -name *.a
>>> ./Release+Asserts/lib/libAssistDS.a
>>> ./Release+Asserts/lib/libcount.a
>>> ./Release+Asserts/lib/libLLVMDataStructure.a
>>> ./Release+Asserts/lib/libpa_pre_rt.a
>>> ./Release+Asserts/lib/libpoolalloc.a
>>> ./Release+Asserts/lib/libpoolalloc_fl_rt.a
>>> ./Release+Asserts/lib/libpoolalloc_rt.a
>>> ./Release+Asserts/lib/libtypechecks_rt.a
>>>
>>>
>>> This creates issue to llvm/safecode since it tries to search
>>> libraries named as poolalloc.a, AssistDS.a etc. Any solution
>>> for this ?
>>>
>>> ~ Kiran
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>> --
>> John Criswell
>> Assistant Professor
>> Department of Computer Science, University of Rochester
>> http://www.cs.rochester.edu/u/criswell
>>
>>
>
>
> --
> John Criswell
> Assistant Professor
> Department of Computer Science, University of Rochester
> http://www.cs.rochester.edu/u/criswell
>
>
--
John Criswell
Assistant Professor
Department of Computer Science, University of Rochester
http://www.cs.rochester.edu/u/criswell
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