[seang]

Hi,

I am compiling OpenFOAM 1.4 with gcc 4.1.2 on OpenSUSE 10.1 and had the following strange error. Any help or hints is appreciated!

regards,
Tek Seang

SOURCE=gambitToFoam.L ; flex++ -f $SOURCE ; mv lex.yy.cc Make/linux64Gcc4DPOpt/gambitToFoam.C ; g++ -m64 -Dlinux64 -DDP -Wall -Wno-strict-aliasing -Wextra -Wno-unused-parameter -Wold-style-cast -march=opteron -O3 -DNoRepository -ftemplate-depth-40 -IlnInclude -I. -I/home/tskuan/CFD/OpenFOAM/OpenFOAM-1.4/src/OpenFOAM/lnInclude -fPIC -c Make/linux64Gcc4DPOpt/gambitToFoam.C -o Make/linux64Gcc4DPOpt/gambitToFoam.o
stdin:16159: m4: Warning: Excess arguments to built-in `m4_ifdef' ignored
lex.yy.cc: In member function âvirtual int yyFlexLexer::yylex()â:
lex.yy.cc:14023: warning: use of old-style cast
lex.yy.cc:14023: warning: use of old-style cast
lex.yy.cc:14039: warning: use of old-style cast
lex.yy.cc:14599: warning: use of old-style cast
lex.yy.cc: In member function âint yyFlexLexer::yy_get_next_buffer()â:
lex.yy.cc:14847: warning: use of old-style cast
lex.yy.cc:14870: warning: use of old-style cast
lex.yy.cc:14883: warning: use of old-style cast
lex.yy.cc:14883: warning: use of old-style cast
lex.yy.cc:14904: warning: use of old-style cast
lex.yy.cc: In member function âyy_state_type yyFlexLexer::yy_get_previous_state()â:
lex.yy.cc:14952: warning: use of old-style cast
lex.yy.cc:14952: warning: use of old-style cast
lex.yy.cc: In member function âvoid yyFlexLexer::yyunput(int, char*)â:
lex.yy.cc:15012: warning: use of old-style cast
lex.yy.cc:15013: warning: use of old-style cast
lex.yy.cc:15021: warning: use of old-style cast
lex.yy.cc: In member function âint yyFlexLexer::yyinput()â:
lex.yy.cc:15088: warning: use of old-style cast
lex.yy.cc: In member function âvirtual yy_buffer_state* yyFlexLexer::yy_create_buffer(std::istream*, int)â:
lex.yy.cc:15168: warning: use of old-style cast
lex.yy.cc:15177: warning: use of old-style cast
lex.yy.cc: In member function âvirtual void yyFlexLexer::yy_delete_buffer(yy_buffer_state*)â:
lex.yy.cc:15199: warning: use of old-style cast
lex.yy.cc:15202: warning: use of old-style cast
lex.yy.cc:15204: warning: use of old-style cast
lex.yy.cc: In member function âvoid yyFlexLexer::yyensure_buffer_stack()â:
lex.yy.cc:15331: warning: use of old-style cast
lex.yy.cc:15349: warning: use of old-style cast
lex.yy.cc: In member function âvoid yyFlexLexer::yy_push_state(int)â:
lex.yy.cc:15367: warning: use of old-style cast
lex.yy.cc:15370: warning: use of old-style cast
lex.yy.cc:15370: warning: use of old-style cast
lex.yy.cc: In function âvoid* yyalloc(yy_size_t)â:
lex.yy.cc:15450: warning: use of old-style cast
lex.yy.cc: In function âvoid* yyrealloc(void*, yy_size_t)â:
lex.yy.cc:15462: warning: use of old-style cast
lex.yy.cc:15462: warning: use of old-style cast
lex.yy.cc: In function âvoid yyfree(void*)â:
lex.yy.cc:15467: warning: use of old-style cast
g++ -m64 -Dlinux64 -DDP -Wall -Wno-strict-aliasing -Wextra -Wno-unused-parameter -Wold-style-cast -march=opteron -O3 -DNoRepository -ftemplate-depth-40 -IlnInclude -I. -I/home/tskuan/CFD/OpenFOAM/OpenFOAM-1.4/src/OpenFOAM/lnInclude -fPIC Make/linux64Gcc4DPOpt/gambitToFoam.o -L/home/tskuan/CFD/OpenFOAM/OpenFOAM-1.4/lib/linux64Gcc4DPOpt \
-lOpenFOAM -liberty -ldl -lm -o /home/tskuan/CFD/OpenFOAM/OpenFOAM-1.4/applications/bin/linux64Gcc4DPOpt/gambitT oFoam
/usr/lib/../lib64/crt1.o: In function `_start':
init.c.text+0x20): undefined reference to `main'
collect2: ld returned 1 exit status
make: *** [/home/tskuan/CFD/OpenFOAM/OpenFOAM-1.4/applications/bin/linux64Gcc4DPOpt/gambit ToFoam] Error 1

[mattijs]

Think it was that that version of flex++ does not like ']]'. Put space inbetween any two angle brackets in gambitToFoam.L

[seang]

Hi Mattijs,

thanks for your suggestion! that worked wonders!

The flex++ version i am using is 2.5.31

regards,
Tek Seang

[jens_klostermann]

Had the same problem on an Ubuntu (debian based) machine.

Also change:
ansysToFoam.L
fluentToFoam.L

as suggested by Mattijs.

[sradl]

Had a similar problem when trying to compile a new viscosity model (should give a new library). The error message is:
/usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64/crt1.o: In function `_start':
../sysdeps/x86_64/elf/start.S:109: undefined reference to `main'

Followed by a bunch of other error messages

Can anyone help?

br
Stefan

[olesen]

Use 'wmake libso' if you are compiling a library.
A plain 'wmake' will attempt to create an application, which requires 'main()' and yields a failure if it is missing.

[Sherlock_1812]

Hi,

I know this is a really old thread. But i get a similar error. I am not compiling a library, just a solver. However, I still get this error message.

/usr/lib/../lib64/crt1.o: In function `_start':
/usr/src/packages/BUILD/glibc-2.11.3/csu/../sysdeps/x86_64/elf/start.S:109: undefined reference to `main'
collect2: ld returned 1 exit status
make: *** [/home1/ms/me12s056/OpenFOAM/me12s056-2.1.1/platforms/linux64GccDPOpt/bin/thermoSolutalPisoFoam] Error 1

Any help?

[wyldckat]

Greetings Srivaths,

This isn't enough information to work with, so here are some questions, to help isolate the source of the problem:

1. Which Linux Distribution are you using and which architecture (32 or 64 bit)?
2. What installation instructions did you follow for installing OpenFOAM 2.1.1.?
3. Do you have more than one OpenFOAM version installed? If you do, how are you keeping them apart?

Best regards,
Bruno

[Sherlock_1812]

Hello Bruno,

I am using Ubuntu 12.04 32 bit system. The 2.1.1 version was on a cluster that i'm running my cases on.

I would like to say that I've got the issue resolved. It was a beginner's error and I just didn't spot it initially.

Thank you for your time.