Bug 246958

Summary:	net/mpich: Fails to build with current GCC: configure: error: The Fortran compiler gfortran10 will not compile files that call the same routine with arguments of different types.
Product:	Ports & Packages	Reporter:	Lorenzo Salvadore <salvadore>
Component:	Individual Port(s)	Assignee:	freebsd-ports-bugs (Nobody) <ports-bugs>
Status:	Closed FIXED
Severity:	Affects Only Me	CC:	fernape, gerald, linimon, powerpc, tcberner
Priority:	---
Version:	Latest
Hardware:	Any
OS:	Any
Bug Depends on:
Bug Blocks:	246700

Description Lorenzo Salvadore freebsd_committer

2020-06-03 13:48:07 UTC

Please see PR #246700 for details, which is about updating the default version of GCC from 9 to 10.

  checking whether Fortran 77 compiler processes .F files with C preprocessor... yes
  checking whether gfortran10 allows mismatched arguments... no
  configure: error: The Fortran compiler gfortran10 will not compile files that call the same routine with arguments of different types.
  ===>  Script "configure" failed unexpectedly.

This error was produced on powerpc64 (see comment 7 in PR #246700).

This issue is probably due to the -fno-common flag set by default. The easy workaround is adding CFLAGS=-fcommon until the code can be fixed (preferably upstream) according to https://gcc.gnu.org/gcc-10/porting_to.html#common .

Comment 1 Lorenzo Salvadore freebsd_committer

2020-06-03 14:16:56 UTC

However note please that the issue probably is not powerpc specific. Thus I set back the Hardware field to any.

Moreover, it seems more likely that the issue is related to https://gcc.gnu.org/gcc-10/porting_to.html#argument-mismatch rather than to -fcommon.

Comment 2 Fernando Apesteguía freebsd_committer

2020-06-18 07:27:16 UTC

Has anyone tried: FFLAGS="-w -fallow-argument-mismatch -O2" as described in this recent thread? https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91731

Comment 3 Tobias Kortkamp freebsd_committer

2020-07-05 14:57:33 UTC

Fixed in ports r541283.