The following macros check for Fortran 77 compiler characteristics. To
check for characteristics not listed here, use
(see section Examining Syntax) or
AC_TRY_RUN (see section Checking Run Time Behavior),
making sure to first set the current lanuage to Fortran 77
AC_LANG_FORTRAN77 (see section Language Choice).
FLIBSis set to these flags.
This macro is intended to be used in those situations when it is necessary to mix, e.g. C++ and Fortran 77 source code into a single program or shared library (see section `Mixing Fortran 77 With C and C++' in GNU Automake).
For example, if object files from a C++ and Fortran 77 compiler must be linked together, then the C++ compiler/linker must be used for linking (since special C++-ish things need to happen at link time like calling global constructors, instantiating templates, enabling exception support, etc.).
However, the Fortran 77 intrinsic and run-time libraries must be linked
in as well, but the C++ compiler/linker doesn't know by default how to
add these Fortran 77 libraries. Hence, the macro
AC_F77_LIBRARY_LDFLAGS was created to determine these Fortran 77
Go to the first, previous, next, last section, table of contents.