Free PGI for Mac OS - compiler doesn't work

Accelerated Computing HPC Compilers Legacy PGI Compilers
1

I installed the Xcode and Free PGI for Mac OS (Version 16.4). when I was compiling the code with “pgf90” as below:

pgf90 -o xx xx.f

the shell shows:

ld: file not found: /usr/lib/crt1.o

I cannot copy the file “crt1.o” to this direction, as “operation not permitted”. So how to solve the problem?
The system is EI Capitan (10.11.5)

2

Make sure you have installed and assented to the license for the
Xcode components, especially the xcode command line tool,
before installing Free PGI OS X

$ xcode-select --install

dave