It happily sets the attribute even though the attribute does not exist.
TEST configureUnused from
PETSc.Configure(/export/home/petsc/petsc-dev-3/config/PETSc/Configure.py:528)
TESTING: configureUnused from
PETSc.Configure(/export/home/petsc/petsc-dev-3/config/PETSc/Configure.py:528)
Sees if __attribute((unused)) is supported
Pushing language Cxx
sh: /export/home/petsc/soft/mpich2-1.2.1p1/bin/mpicxx -c -o
/tmp/petsc-VAqamh/PETSc.Configure/conftest.o
-I/tmp/petsc-VAqamh/config.setCompilers -I/tmp/petsc-VAqamh/config.compilers
-I/tmp/petsc-VAqamh/config.functions -I/tmp/petsc-VAqamh/config.types
-I/tmp/petsc-VAqamh/PETSc.utilities.missing
-I/tmp/petsc-VAqamh/config.libraries -I/tmp/petsc-VAqamh/PETSc.Configure
-I/tmp/petsc-VAqamh/PETSc.utilities.scalarTypes -g
/tmp/petsc-VAqamh/PETSc.Configure/conftest.cc
Executing: /export/home/petsc/soft/mpich2-1.2.1p1/bin/mpicxx -c -o
/tmp/petsc-VAqamh/PETSc.Configure/conftest.o
-I/tmp/petsc-VAqamh/config.setCompilers -I/tmp/petsc-VAqamh/config.compilers
-I/tmp/petsc-VAqamh/config.functions -I/tmp/petsc-VAqamh/config.types
-I/tmp/petsc-VAqamh/PETSc.utilities.missing
-I/tmp/petsc-VAqamh/config.libraries -I/tmp/petsc-VAqamh/PETSc.Configure
-I/tmp/petsc-VAqamh/PETSc.utilities.scalarTypes -g
/tmp/petsc-VAqamh/PETSc.Configure/conftest.cc
sh:
Possible ERROR while running compiler: error message =
{"/tmp/petsc-VAqamh/PETSc.Configure/conftest.cc", line 3: Warning: attribute
unused is unsupported and will be skipped..
1 Warning(s) detected.
}
Source:
#include "confdefs.h"
#include "conffix.h"
__attribute((unused)) static int myfunc(void){ return 1;}
int main() {
int i = myfunc();
;
return 0;
}
Pushing language CXX
Popping language CXX
sh: /export/home/petsc/soft/mpich2-1.2.1p1/bin/mpicxx -o
/tmp/petsc-VAqamh/PETSc.Configure/conftest -g
/tmp/petsc-VAqamh/PETSc.Configure/conftest.o -ldl
Executing: /export/home/petsc/soft/mpich2-1.2.1p1/bin/mpicxx -o
/tmp/petsc-VAqamh/PETSc.Configure/conftest -g
/tmp/petsc-VAqamh/PETSc.Configure/conftest.o -ldl
sh:
Defined "UNUSED" to "__attribute((unused))"
Popping language Cxx
