| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | |
| 2 | README for uC-libc on the m68k[nommu] architecture |
| 3 | |
| 4 | James Graves <jgraves@deltamobile.com> |
| 5 | |
| 6 | For now (2001/1/9) support for the m68k should be considered "alpha" |
| 7 | quality at best. It mostly works OK for some of the stuff I'm working |
| 8 | on, but you can't fully compile other things (like the user |
| 9 | applications for uClinux). Needs lots more testing. |
| 10 | |
| 11 | Only developed/tested with m68k-pic-coff-gcc 2.7.2.3-pic-060999, from |
| 12 | Lineo. |
| 13 | |
| 14 | Configuration: |
| 15 | |
| 16 | Read and edit the Config file, carefully. |
| 17 | |
| 18 | TARGET_ARCH=m68k |
| 19 | CROSS_COMPILE = m68k-pic-coff- |
| 20 | CC = $(CROSS_COMPILE)gcc |
| 21 | STRIPTOOL = $(CROSS_COMPILE)strip |
| 22 | KERNEL_SOURCE=/opt/uClinux/linux |
| 23 | HAS_MMU = false |
| 24 | HAS_FLOATS = false |
| 25 | MALLOC = malloc-simple |
| 26 | INSTALL_DIR = /opt/uClinux/m68k-pic-coff |
| 27 | |
| 28 | The regular malloc library is broken, dunno why. Use |
| 29 | simple-malloc. |
| 30 | |
| 31 | Installation: |
| 32 | Theoretically, you should be able to install right over the |
| 33 | existing uC-libc 0.9.1 files in |
| 34 | /opt/uClinux/m68k-pic-coff/include, but I recommend cleaning |
| 35 | out all the include files there. |
| 36 | |
| 37 | The only file in there that's not from the old uC-libc is |
| 38 | assert.h, but I don't know why that would be the valid copy. |
| 39 | |
| 40 | run: |
| 41 | make install |
| 42 | |
| 43 | Problems: |
| 44 | |
| 45 | I _may_ be able to help if you run into problems. Create a |
| 46 | really, really short program that demonstrates the problem, |
| 47 | and contact me. |
| 48 | |
| 49 | TODO: |
| 50 | Fix vfork(). |
| 51 | |
| 52 | Does crt0.o still need to be a separate file? Can't I just |
| 53 | stick it in libc.a and be done with it? Is that specified in |
| 54 | the GCC link options? |