ch 10 compile errors

[ssilverman999]

errors on unfem.c:
--------------------------------------/home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:299: undefined reference to UMGetNodeCoordArrayRead' /usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:305: undefined reference to UMRestoreNodeCoordArrayRead'
/usr/bin/ld: unfem.o: in function FormFunction': /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:328: undefined reference to UMGetNodeCoordArrayRead'
/usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:405: undefined reference to UMRestoreNodeCoordArrayRead' /usr/bin/ld: unfem.o: in function FormPicard':
/home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:435: undefined reference to UMGetNodeCoordArrayRead' /usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:482: undefined reference to UMRestoreNodeCoordArrayRead'
/usr/bin/ld: unfem.o: in function main': /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:163: undefined reference to UMInitialize'
/usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:164: undefined reference to UMReadNodes' /usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:165: undefined reference to UMReadISs'
/usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:166: undefined reference to UMStats' /usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:173: undefined reference to UMViewASCII'
/usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:282: undefined reference to UMViewSolutionBinary' /usr/bin/ld: /home/steve/PETSc/petsc/p4pdes-master/c/ch10/unfem.c:290: undefined reference to UMDestroy'
collect2: error: ld returned 1 exit status
make: [makefile:6: unfem] Error 1 (ignored)
/usr/bin/rm -f unfem.o

also on um.c , 👍 (.text+0x1b): undefined reference to `main'
collect2: error: ld returned 1 exit status
make: [makefile:12: um] Error 1 (ignored)
/usr/bin/rm -f um.o
root@steve-OMEN-by-HP-Laptop:/home/steve/PETSc/petsc/p4pdes-master/c/ch10#

[Ed Bueler]

This is surprising and I don't know what is going on. Your linker is not picking up um.h. Note the line #include "um.h" does appear at the top of um.c and unfem.c.

When I build unfem it looks like this:

$ make unfem
/home/bueler/petsc/linux-c-dbg/bin/mpicc -o unfem.o -c -Wall -Wwrite-strings -Wno-unknown-pragmas -Wno-lto-type-mismatch -Wno-stringop-overflow -fstack-protector -fvisibility=hidden -g3 -O0 -pedantic -std=c99 -I/home/bueler/petsc/include -I/home/bueler/petsc/linux-c-dbg/include    `pwd`/unfem.c
/home/bueler/petsc/linux-c-dbg/bin/mpicc -o um.o -c -Wall -Wwrite-strings -Wno-unknown-pragmas -Wno-lto-type-mismatch -Wno-stringop-overflow -fstack-protector -fvisibility=hidden -g3 -O0 -pedantic -std=c99 -I/home/bueler/petsc/include -I/home/bueler/petsc/linux-c-dbg/include    `pwd`/um.c
/home/bueler/petsc/linux-c-dbg/bin/mpicc -Wall -Wwrite-strings -Wno-unknown-pragmas -Wno-lto-type-mismatch -Wno-stringop-overflow -fstack-protector -fvisibility=hidden -g3 -O0 -pedantic -std=c99 -o unfem unfem.o um.o  -Wl,-rpath,/home/bueler/petsc/linux-c-dbg/lib -L/home/bueler/petsc/linux-c-dbg/lib -Wl,-rpath,/home/bueler/petsc/linux-c-dbg/lib -L/home/bueler/petsc/linux-c-dbg/lib -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/11 -L/usr/lib/gcc/x86_64-linux-gnu/11 -lpetsc -llapack -lblas -lm -lX11 -lmpifort -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++
/usr/bin/rm -f unfem.o um.o

Some thoughts follow ...

What C compiler do you have? What does

$PETSC_DIR/$PETSC_ARCH/bin/mpicc --version

generate? (I get gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0.) But I can't imagine a C compiler for which this include fails.

What happens in e.g. Chapter 6, where there is also a local include? The following should work:

$ cd c/ch6/
$ make fish

Finally, do you have local modifications?

[Ed Bueler]

Also, if things are not resolved, can you let me know what your PETSc and p4pdes versions are? For the former you can do

$ grep PETSC_VERSION $PETSC_DIR/$PETSC_ARCH/lib/petsc/conf/configure.log

[Ed Bueler]

@ssilverman999 Feel free to close this issue if it is resolved for you. Otherwise let me know what you have found, and what is blocking? Thanks!

[Ed Bueler]

Closed because of lack of activity.