<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> Weird one (perhaps). Colleague and I trade back a large slug of FORTRAN code -- he is on a Windows machine, running mingw gfortran 9.2. He recently made a small code update that calls the findloc intrinsic, which is suppoted in 9.x.x. Code compiles fine on his end. But, on my end, no such luck -- I'm on Linux boxes (CentOS 7), running gfortran 9.3.1 under scl devtoolset. When I try to compile the exact same code, I get a fail at the end -- a few lines referring to a call to FINDLOC in one of the modules (something called estmat). /opt/rh/devtoolset-9/root/usr/libexec/gcc/x86_64-redhat-linux/9/ld: estmat.o: in function `filldm.3876': estmat.f90:(.text+0x1201): undefined reference to `_gfortran_findloc0_s1' Was wondering if anyone can give me some advice? Is there a way to 'look for' FINDLOC on my box (irony accidental), or (perhaps) if there is a packaging issue with devtoolkit for CentOS, is there something I can do to correct the problem? Many thanks in advance... If it matters, this is what 'gfortran -v' returns on my machine: Using built-in specs. COLLECT_GCC=gfortran COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-9/root/usr/libexec/gcc/x86_64-redhat-linux/9/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,fortran,lto --prefix=/opt/rh/devtoolset-9/root/usr --mandir=/opt/rh/devtoolset-9/root/usr/share/man --infodir=/opt/rh/devtoolset-9/root/usr/share/info --with-bugurl=<a class="moz-txt-link-freetext" href="http://bugzilla.redhat.com/bugzilla">http://bugzilla.redhat.com/bugzilla</a> --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --with-linker-hash-style=gnu --with-default-libstdcxx-abi=gcc4-compatible --enable-plugin --enable-initfini-array --with-isl=/builddir/build/BUILD/gcc-9.3.1-20200408/obj-x86_64-redhat-linux/isl-install --disable-libmpx --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux Thread model: posix gcc version 9.3.1 20200408 (Red Hat 9.3.1-2) (GCC) </body> </html>