linking object files mess!

[milenko76]

I have writen a makefile and managed to compile programs but...
f77 -o mt2d mt2d.o indat.o re2.o defpol12.o boufld.o koef3.o gaussr.o
mt2d.o: In function `MAIN__':
fort77-13793-1.c.text+0x1e3): undefined reference to `boumedcell_m__'
fort77-13793-1.c.text+0x3b9): undefined reference to `sflfld_m__'
fort77-13793-1.c.text+0x3d2): undefined reference to `koef3rhs_m__'
fort77-13793-1.c.text+0x445): undefined reference to `gaussrrhs_m__'
fort77-13793-1.c.text+0x4ed): undefined reference to `sflfld_m__'
Is it the compiler issue?
It is somehow related to underscore but do not know how.

 

[xwb]

The underscore is probably a red herring.

Possibility #1 the routines bournedcell sflfld ... are missing.

Possibility #2 ordering of object files. If indat has routines that boufld needs, they may not be included. You have to rearrange it as boufld first then indat

What were the compile options?

 

[milenko76]

Thanks xwb.
Compiler options are:
F77=f77
FFLAG= -O3
I think that it is correlated with compiler I am using f2c,
I do not have g77 available.

 

[xwb]

Not sure what compiler f77 is. Can you just type

which f77

or if that doesn't work, whence f77

Then check whether it is a link and if it is, what it is linked to.

f2c generates C from Fortran code so that would probably be using gcc: not f77.

 

[milenko76]

which f77,gives me:
/usr/bin/f77
I still have problem:
f77 -g -o mt1 mt1.o indat.o re2.o defpol12.o boufld.o koef3.o gaussr.o sflfld.o koef3rhs.o gaussrrhs.o surfce.o
mt1.o: In function `MAIN__':
/home/milenko/mt1/mt1.f:35: undefined reference to `indat_'
collect2: ld returned 1 exit status
I do not understand how is this underscore important.

 

[milenko76]

indat.o: indat.f d2.dat
$(F77) $(FLAGS) -c indat.f -o indat.o
Part of the makefile.