bug#15258: Fortran tests in configure script seem questionable

I am going to try to build automake-13.4 on Solaris with the Oracle Solaris 12.3 dev tools and within configure I see that Fortran tests fail : node002$ ./configure checking whether /usr/local/bin/gmake supports nested variables... yes checking build system type... sparc-sun-solaris2.10 check

bug#15256: GNU Automake 1.14 : FAIL 6 on Solaris 10 Sparc v9

As per test report : Testsuite summary for GNU Automake 1.14 # TOTAL: 2874 # PASS: 2726 # SKIP: 101 # XFAIL: 41 # FAIL: 6 # XPASS: 0 # ERROR: