https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746729#M4488 Hi, <BR />I have problems compiling our software using ifort under Mac OS. The error I get happens during the building of the binary. I have included a sample program that gives the identical error as I get with our software and ifort. The sample program compiles without error using g95 (0.91). The error I get is: <BR /> <BR />ifort -c testmod2.f90 -o testmod2.o <BR />ifort -c testmod.f90 -o testmod.o <BR />ifort -c test.f90 -o test.o <BR />ar -r testlib.a test.o testmod.o testmod2.o <BR />ar: creating archive testlib.a <BR />ifort -o test.bin test.o testlib.a <BR />ld: Undefined symbols: <BR />_testmod2_mp_var1_module2_ <BR />make: *** [test.bin] Error 1 <BR /> <BR /> <BR />As can be seen from the program included below ifort has no problems with the module variables from testmod but has problems with the testmod2 variables. <BR /> <BR />The main program and modules: <BR /> <BR />PROGRAM test <BR /> <BR />USE testmod <BR />USE testmod2 <BR /> <BR />IMPLICIT NONE <BR /> <BR />integer :: a,b,c,d <BR /> <BR />write (*,*) 'Hello World' <BR /> <BR />a = 1 <BR />b = 4 <BR />c = 7 <BR /> <BR />write (*,*) a,c,d <BR />testmod_var = 10 <BR />var1_module2 = testmod_var <BR />d = test_func(a,c) <BR />write (*,*) testmod_var,d <BR />write (*,*) var1_module2 <BR /> <BR />END PROGRAM test <BR /> <BR />MODULE testmod <BR /> <BR />IMPLICIT NONE <BR /> <BR />PRIVATE <BR />PUBLIC testmod_var,test_func <BR /> <BR />INTEGER,SAVE :: testmod_var <BR /> <BR />CONTAINS <BR /> <BR />FUNCTION test_func(a,b) <BR /> INTEGER :: test_func <BR /> INTEGER, INTENT(IN) :: a,b <BR /> test_func = a + b + 3 <BR />END FUNCTION test_func <BR /> <BR /> <BR />END MODULE testmod <BR /> <BR />MODULE testmod2 <BR /> <BR />IMPLICIT NONE <BR /> <BR />PRIVATE var2_module2 <BR />PUBLIC var1_module2 <BR /> <BR />INTEGER :: var1_module2,var2_module2 <BR /> <BR /> <BR />END MODULE testmod2 <BR /> <BR /> Wed, 06 Feb 2008 22:36:58 GMT michielotten 2008-02-06T22:36:58Z https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746729#M4488 Hi, <BR />I have problems compiling our software using ifort under Mac OS. The error I get happens during the building of the binary. I have included a sample program that gives the identical error as I get with our software and ifort. The sample program compiles without error using g95 (0.91). The error I get is: <BR /> <BR />ifort -c testmod2.f90 -o testmod2.o <BR />ifort -c testmod.f90 -o testmod.o <BR />ifort -c test.f90 -o test.o <BR />ar -r testlib.a test.o testmod.o testmod2.o <BR />ar: creating archive testlib.a <BR />ifort -o test.bin test.o testlib.a <BR />ld: Undefined symbols: <BR />_testmod2_mp_var1_module2_ <BR />make: *** [test.bin] Error 1 <BR /> <BR /> <BR />As can be seen from the program included below ifort has no problems with the module variables from testmod but has problems with the testmod2 variables. <BR /> <BR />The main program and modules: <BR /> <BR />PROGRAM test <BR /> <BR />USE testmod <BR />USE testmod2 <BR /> <BR />IMPLICIT NONE <BR /> <BR />integer :: a,b,c,d <BR /> <BR />write (*,*) 'Hello World' <BR /> <BR />a = 1 <BR />b = 4 <BR />c = 7 <BR /> <BR />write (*,*) a,c,d <BR />testmod_var = 10 <BR />var1_module2 = testmod_var <BR />d = test_func(a,c) <BR />write (*,*) testmod_var,d <BR />write (*,*) var1_module2 <BR /> <BR />END PROGRAM test <BR /> <BR />MODULE testmod <BR /> <BR />IMPLICIT NONE <BR /> <BR />PRIVATE <BR />PUBLIC testmod_var,test_func <BR /> <BR />INTEGER,SAVE :: testmod_var <BR /> <BR />CONTAINS <BR /> <BR />FUNCTION test_func(a,b) <BR /> INTEGER :: test_func <BR /> INTEGER, INTENT(IN) :: a,b <BR /> test_func = a + b + 3 <BR />END FUNCTION test_func <BR /> <BR /> <BR />END MODULE testmod <BR /> <BR />MODULE testmod2 <BR /> <BR />IMPLICIT NONE <BR /> <BR />PRIVATE var2_module2 <BR />PUBLIC var1_module2 <BR /> <BR />INTEGER :: var1_module2,var2_module2 <BR /> <BR /> <BR />END MODULE testmod2 <BR /> <BR /> Wed, 06 Feb 2008 22:36:58 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746729#M4488 michielotten 2008-02-06T22:36:58Z https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746730#M4489 After your 'ar' command, you need to run ranlib -c against it:<BR /><BR />ranlib -c testlib.a<BR /><BR />ron<BR /> Wed, 06 Feb 2008 23:21:41 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746730#M4489 Ron_Green 2008-02-06T23:21:41Z https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746731#M4490 Thanks Ron! that did it :-) Cheers, Michiel. Wed, 06 Feb 2008 23:50:36 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/problem-with-modules-and-ifort-10-1-008-under-Mac-OS/m-p/746731#M4490 michielotten 2008-02-06T23:50:36Z