https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740252#M223 <DIV style="margin:0px;"> <DIV id="quote_reply" style="margin-top: 5px; width: 100%;"> <DIV style="margin-left:2px;margin-right:2px;">Quoting - <A href="https://community.intel.com/en-us/profile/25055">rreis</A></DIV> <DIV style="background-color:#E5E5E5; padding:5px;border: 1px; border-style: inset;margin-left:2px;margin-right:2px;"><EM>is there any problem in compiling .f and .f90 files into the same program?</EM></DIV> </DIV> </DIV> <BR />No. Mon, 26 Oct 2009 15:24:29 GMT Kevin_D_Intel 2009-10-26T15:24:29Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740251#M222 is there any problem in compiling .f and .f90 files into the same program? Mon, 26 Oct 2009 15:06:25 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740251#M222 rreis 2009-10-26T15:06:25Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740252#M223 <DIV style="margin:0px;"> <DIV id="quote_reply" style="margin-top: 5px; width: 100%;"> <DIV style="margin-left:2px;margin-right:2px;">Quoting - <A href="https://community.intel.com/en-us/profile/25055">rreis</A></DIV> <DIV style="background-color:#E5E5E5; padding:5px;border: 1px; border-style: inset;margin-left:2px;margin-right:2px;"><EM>is there any problem in compiling .f and .f90 files into the same program?</EM></DIV> </DIV> </DIV> <BR />No. Mon, 26 Oct 2009 15:24:29 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740252#M223 Kevin_D_Intel 2009-10-26T15:24:29Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740253#M224 <DIV style="margin:0px;"></DIV> You may, however, have to compile the .f and .f90 sources on separate command lines, and then link them together. I know in the past that it did not work to mix file types on the same ifort line - have not tried that lately.<BR /> Mon, 26 Oct 2009 15:32:52 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740253#M224 Steven_L_Intel1 2009-10-26T15:32:52Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740254#M225 <DIV style="margin:0px;"> <DIV id="quote_reply" style="margin-top: 5px; width: 100%;"> <DIV style="margin-left:2px;margin-right:2px;">Quoting - <A href="https://community.intel.com/en-us/profile/336209">Steve Lionel (Intel)</A></DIV> <DIV style="background-color:#E5E5E5; padding:5px;border: 1px; border-style: inset;margin-left:2px;margin-right:2px;"><EM>You may, however, have to compile the .f and .f90 sources on separate command lines, and then link them together. I know in the past that it did not work to mix file types on the same ifort line - have not tried that lately.<BR /></EM></DIV> </DIV> </DIV> <BR />We are good in this regard with 11.1. I did not check earlier releases.<BR /><BR />$ cat -n main.f90<BR /> 1 program demo<BR /> 2 call sub1<BR /> 3 end<BR /><BR />$ cat -n sub1.f<BR /> 1 subroutine sub1<BR /> 2 write(*,*)'In sub1'<BR /> 3 end<BR /><BR />$ ifort -V main.f90 sub1.f<BR />Intel Fortran Intel 64 Compiler Professional for applications running on Intel 64, Version 11.1 Build 20091012 Package ID: l_cprof_p_11.1.059<BR />Copyright (C) 1985-2009 Intel Corporation. All rights reserved.<BR /><BR />Intel Fortran 11.1-2620<BR />Intel Fortran 11.1-2620<BR />GNU ld version 2.17.50.0.6-5.el5 20061020<BR /><BR />$ ./a.out<BR />In sub1<BR /> Mon, 26 Oct 2009 16:04:07 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740254#M225 Kevin_D_Intel 2009-10-26T16:04:07Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740255#M226 <DIV style="margin:0px;"></DIV> cool. many thanks for answering (and producing ifort)<BR /> Mon, 26 Oct 2009 16:06:43 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740255#M226 rreis 2009-10-26T16:06:43Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740256#M227 <DIV style="margin:0px;"></DIV> Kevin, your test needed to have the .f file include fixed-form continuation or other coding that would not be acceptable in free-form source. However I did test this just now and it does work, so we're good.<BR /> Mon, 26 Oct 2009 16:48:36 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740256#M227 Steven_L_Intel1 2009-10-26T16:48:36Z https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740257#M228 <BR />Yes good point, or reverse the order of the source files to see if the lack of fixed-form indentation in main.f90 triggered errors. Mon, 26 Oct 2009 20:39:55 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/quick-question-compiling-f-and-f90/m-p/740257#M228 Kevin_D_Intel 2009-10-26T20:39:55Z