Re: [Genesis-sim-users] help with compiling Genesis 2.4 on RHEL-6 system

[Dave B. <db...@Co...>]

Hi Susan,

That is certainly a strange error. I see that you are using gcc 5.3 on a 
RHEL system.

I've recently compiled GENESIS under Fedora 20 with gcc 4.8, and Fedora 
25 with gcc 6.3.

The older compiler worked fine, but for the newer compiler, I found that 
very recent glibc versions removed a deprecated definition in 
<sys/wait.h>, and I had to make a change in src/sys/system.c.

If anyone needs this fix, I can put this change on the github repo**at 
https://github.com/genesis-sim/genesis-2.4. 
<https://github.com/genesis-sim/genesis-2.4> This is where I put the 
latest fixes and changes.

This wasn't your problem, but it could be something to do with a change 
in a file included by sys/code_lib.c, which dates from 2005 and earlier.

Perhaps this caused the undefined reference to 'yylex' or the multiple 
definitions of 'main', which is only defined once in code_lib.c.

Can you send me (but not the whole mailing list) your full make.out 
file, and the Makefile that was generated by ./configure? I will do what 
I can to solve this.

Dave Beeman

On 03/27/2017 02:48 PM, Susan Chacko wrote:

> Hi,
>
> I'm attempting to compile Genesis 2.4 from source in response to one of
> our users, and am hitting a wall here.
>
> To summarize, I did a
> ./configure --prefix=/some/path/here
>
> The configure went fine (config output appended at the end of this
> message).
> The subsequent make failed. The first error was in the 'sys' subdirectory:
>
> $ /usr/local/GCC/5.3.0/bin/gcc -O2 -D__NO_MATH_INLINES -DBSD -DLinux
> -lfl -DBSD -o code_lib code_lib.c
> /tmp/ccLCiLkb.o: In function `main':
> code_lib.c:(.text.startup+0x0): multiple definition of `main'
> /usr/lib/../lib64/libfl.a(libmain.o):(.text+0x0): first defined here
> /usr/lib/../lib64/libfl.a(libmain.o): In function `main':
> (.text+0xb): undefined reference to `yylex'
> collect2: error: ld returned 1 exit status
>
> Any ideas what is going on? It seems to be related to the flex library.
> We have the following flex libraries installed:
>
> flex-2.5.35-9.el6.x86_64
> flex-devel-2.5.35-9.el6.x86_64
>
> Any suggestions for how to proceed? Much appreciated.
> Susan
>
> -----------configure output----------------
> checking for gcc... /usr/local/GCC/5.3.0/bin/gcc
> checking whether the C compiler works... yes
> checking for C compiler default output file name... a.out
> checking for suffix of executables...
> checking whether we are cross compiling... no
> checking for suffix of object files... o
> checking whether we are using the GNU C compiler... yes
> checking whether /usr/local/GCC/5.3.0/bin/gcc accepts -g... yes
> checking for /usr/local/GCC/5.3.0/bin/gcc option to accept ISO C89...
> none needed
> checking how to run the C preprocessor... /usr/local/GCC/5.3.0/bin/gcc -E
> checking for X... libraries , headers
> checking for gethostbyname... yes
> checking for connect... yes
> checking for remove... yes
> checking for shmat... yes
> checking for IceConnectionNumber in -lICE... yes
> checking for ranlib... ranlib
> checking for bison... bison -y
> checking for flex... flex
> checking lex output file root... lex.yy
> checking lex library... -lfl
> checking whether yytext is a pointer... yes
> checking for main in -lncurses... yes
> checking for grep that handles long lines and -e... /bin/grep
> checking for egrep... /bin/grep -E
> checking for ANSI C header files... yes
> checking for sys/types.h... yes
> checking for sys/stat.h... yes
> checking for stdlib.h... yes
> checking for string.h... yes
> checking for memory.h... yes
> checking for strings.h... yes
> checking for inttypes.h... yes
> checking for stdint.h... yes
> checking for unistd.h... yes
> checking size of long int... 8
> configure: creating ./config.status
> config.status: creating Makefile
>
>
>
>