gfortran：编译分层相关子程序文件的源代码

Question

我想编译main.f90，它依赖于三个子程序在单独的文件中。对于第三个子程序，它也有三个子程序。

sub1.f

sub2.f

sub3_main.f sub3_sub1.f sub3_sub2.f sub3_sub3.f

运行下面的代码将如下产生长的错误消息。

gfortran main.f90 sub1.f sub2.f sub3_main.f sub3_sub1.f sub3_sub2.f sub3_sub3.f -o- test.exe

我搜索，发现我可能需要标志-c，但我不知道有关编译的命令，再怎么目标文件链接成一个独立的程序。或者它与这个问题有关：。

在此先感谢！

test.exe: In function `_fini': 
(.fini+0x0): multiple definition of `_fini' 
/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crti.o:(.fini+0x0): first defined here 
test.exe: In function `__data_start': 
(.data+0x0): multiple definition of `__data_start' 
/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crt1.o:(.data+0x0): first defined here 
test.exe: In function `__data_start': 
(.data+0x4): multiple definition of `__dso_handle' 
/usr/lib/gcc/i686-linux-gnu/4.6/crtbegin.o:(.data+0x0): first defined here 
test.exe:(.rodata+0x4): multiple definition of `_IO_stdin_used' 
/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crt1.o:(.rodata.cst4+0x0): first defined here 
test.exe: In function `_start': 
(.text+0x0): multiple definition of `_start' 
/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crt1.o:(.text+0x0): first defined here 
test.exe:(.rodata+0x0): multiple definition of `_fp_hw' 
/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crt1.o:(.rodata+0x0): first defined here 
test.exe: In function `main': 
(.text+0x399): multiple definition of `main' 
/tmp/ccwQ3UVQ.o:main.f90:(.text+0x20ee): first defined here 
test.exe: In function `_init': 
(.init+0x0): multiple definition of `_init' 
/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crti.o:(.init+0x0): first defined here 
/usr/lib/gcc/i686-linux-gnu/4.6/crtend.o:(.dtors+0x0): multiple definition of `__DTOR_END__' 
test.exe:(.dtors+0x4): first defined here 
/usr/bin/ld: error in test.exe(.eh_frame); no .eh_frame_hdr table will be created. 
collect2: ld returned 1 exit status 

Answer 1

你应该能够做到之一：

gfortran -c sub1.f 
gfortran -c sub2.f 
gfortran -c sub3_main.f sub3_sub1.f sub3_sub2.f sub3_sub3.f 
gfortran sub1.o sub2.o sub3_main.o sub3_sub1.o sub3_sub2.o sub3_sub3.o main.f90 -o text.exe 

或

gfortran sub1.f sub2.f sub3_main.f sub3_sub1.f sub3_sub2.f sub3_sub3.f main.f90 -o text.exe 

您应该只有一个程序和任意数量proceduers（子程序和函数）的。上面假设sub3_main是一个程序，并且你的程序在main.f90中。