# Date\_pack.mod is not a GNU Fortran Module File

**URL:** <https://forum.cmascenter.org/t/date-pack-mod-is-not-a-gnu-fortran-module-file/2469>\
**Category:** MCIP\
**Created:** [July 4, 2021, 8:24pm UTC](https://forum.cmascenter.org/t/date-pack-mod-is-not-a-gnu-fortran-module-file/2469 "2021-07-04T20:24:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Hasibul](https://avatars.discourse-cdn.com/v4/letter/h/838e76/32.png) [@Hasibul](https://forum.cmascenter.org/u/Hasibul)\
**Post date:** [July 4, 2021, 8:24pm UTC](https://forum.cmascenter.org/t/date-pack-mod-is-not-a-gnu-fortran-module-file/2469/1 "2021-07-04T20:24:18Z")

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Hi all,

I am facing issues compiling MCIP on gcc platform. I am using I/O API 3.2 and NETCDF 4.7. The issue is detailed in the screenshot attached.

 ![MCIP_Compilation_Issue](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/2X/b/bfd6e3b77e4eaccdbe2d5cf357041915a0502887.png)

Hasibul

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**Author:** ![cgnolte](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.cmascenter.org/cgnolte/32/53_2.png) [@cgnolte](https://forum.cmascenter.org/u/cgnolte)\
**Post date:** [July 5, 2021, 12:19am UTC](https://forum.cmascenter.org/t/date-pack-mod-is-not-a-gnu-fortran-module-file/2469/2 "2021-07-05T00:19:00Z")

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You apparently have existing objects and module files, which may be from a different compiler.  
From within the src directory, try issuing the command `make clean`, then `make`.