C program previously compiled on Solaris need to compile on Linux

First let me preface this question and say that I am not a C programmer.  Never have been.  Code PERL, vbscript, & ASP well tho.  Have a situation where we are moving from Solaris to Linux and have a custom shared object that I cannot get to compile on Linux.  I've resolved all of the *.h file dependency error message, etc but now when I type "make" I receive the following and really don't know where to start troubleshooting...  Old system was Solaris 8 64-bit.  New System is ReHat x86_64-bit .  Please see output below.  Am looking for guidance to resolve the errors during compile.  I'm using the mozldap SDK and those functions '`ldap_init', etc should be in there.  I have setup my LD_LIBRARY_PATH and also the PATH variable to include all locations where the sdk files exist.   thanks for your time!

# make
/usr/bin/gcc -DLINUX -D_REENTRANT -I. -c getrpw.cpp
/usr/bin/gcc -DLINUX -D_REENTRANT -G getrpw.o -o libgetrpw.so
gcc: unrecognized option '-G'
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
getrpw.o: In function `getUserContext':
getrpw.cpp:(.text+0x99a): undefined reference to `ldap_init'
getrpw.cpp:(.text+0x9f0): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xa14): undefined reference to `ldap_set_option'
getrpw.cpp:(.text+0xa59): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xa7d): undefined reference to `ldap_set_option'
getrpw.cpp:(.text+0xac2): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xae4): undefined reference to `ldap_simple_bind_s'
getrpw.cpp:(.text+0xaf5): undefined reference to `ldap_err2string'
getrpw.cpp:(.text+0xb46): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xbe7): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xc71): undefined reference to `ldap_search_ext_s'
getrpw.cpp:(.text+0xcc4): undefined reference to `ldap_err2string'
getrpw.cpp:(.text+0xd10): undefined reference to `ldap_msgfree'
getrpw.cpp:(.text+0xd19): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xd35): undefined reference to `ldap_count_entries'
getrpw.cpp:(.text+0xd4f): undefined reference to `ldap_first_entry'
getrpw.cpp:(.text+0xd64): undefined reference to `ldap_first_attribute'
getrpw.cpp:(.text+0xd79): undefined reference to `ldap_get_values'
getrpw.cpp:(.text+0xe1f): undefined reference to `ldap_value_free'
getrpw.cpp:(.text+0xe36): undefined reference to `ldap_ber_free'
getrpw.cpp:(.text+0xe3f): undefined reference to `ldap_memfree'
getrpw.cpp:(.text+0xe51): undefined reference to `ldap_msgfree'
getrpw.cpp:(.text+0xe5a): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xe82): undefined reference to `ldap_value_free'
getrpw.cpp:(.text+0xedb): undefined reference to `ldap_value_free'
getrpw.cpp:(.text+0xef2): undefined reference to `ldap_ber_free'
getrpw.cpp:(.text+0xefb): undefined reference to `ldap_memfree'
getrpw.cpp:(.text+0xf0d): undefined reference to `ldap_msgfree'
getrpw.cpp:(.text+0xf16): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xf33): undefined reference to `ldap_ber_free'
getrpw.cpp:(.text+0xf3c): undefined reference to `ldap_memfree'
getrpw.cpp:(.text+0xf4e): undefined reference to `ldap_msgfree'
getrpw.cpp:(.text+0xf57): undefined reference to `ldap_unbind'
getrpw.cpp:(.text+0xfed): undefined reference to `ldap_msgfree'
getrpw.cpp:(.text+0xff6): undefined reference to `ldap_unbind'
getrpw.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
make: *** [libgetrpw.so] Error 1
jdissupportAsked:
Who is Participating?
 
jkrCommented:
Seems like your missing the LDAP library - try adding '-lldap' to your linker switches.
0
 
cupCommented:
Also change -G to -g
It adds debug symbols.
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ssnkumarCommented:
Your compilation command is:
/usr/bin/gcc -DLINUX -D_REENTRANT -I. -c getrpw.cpp

From the filename getrpw.cpp, I assume that, you have a C++ code.
So, try to compile using g++ instead of gcc.

And look at this error:
(.text+0x20): undefined reference to `main'
If you are using main() function in right way, you should not get this error.

Also, you should compile with correct library and use -lldap as somebody already pointed out.
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ssnkumarCommented:
Dhaest,

I feel that the, answers given were practical.
So, it will not be fair to just delete the question.
0
 
ssnkumarCommented:
I added a comment.
Instead of pressing "Submit", I pressed "Object".
I didn't know that "Object" will remove the "Deletion Pending".
I didn't intend to do that and apologies for any problems that might create.
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ssnkumarCommented:
My recommendation is 3.
Accept http:#34953977, http:#34958420 and http:#34968531 as answers.
0
 
Robert MarleySinger / SongwriterCommented:
Starting the auto-close procedure on behalf of the Question Author, to implement the recommendations from the participating Expert(s).


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