37328232b7
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1479 42af7a65-404d-4744-a932-0658087f49c3
66 lines
2.4 KiB
Plaintext
Executable File
66 lines
2.4 KiB
Plaintext
Executable File
configs/skp16c26/README.txt
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^^^^^^^^^^^^^^^^^^^^^^^^^^^
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BUILDING THE R8C/M16C/M32C GNU TOOLCHAIN
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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1. CD to the correct directory.
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Change to the directory just above the NuttX installation. If <nuttx-dir> is
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where NuttX is installed, then cd to <nuttx-dir>/..
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2. Get the buildroot Module
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Check out the misc/buildroot module (or download the appropriate buildroot package).
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CVS checkout instructions:
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cvs -d:pserver:anonymous@nuttx.cvs.sourceforge.net:/cvsroot/nuttx login
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cvs -z3 -d:pserver:anonymous@nuttx.cvs.sourceforge.net:/cvsroot/nuttx co -P nuttx
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3. Move the buildroot Source Tree and create the archive directory
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mv misc/buildroot .
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mkdir archive
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The <nuttx>/../buildroot is where the toolchain is built;
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The <nuttx>/../archive directory is where toolchain sources will be downloaded.
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4. Configure and Make the buildroot
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cd buildroot
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cp configs/m32c-defconfig-4.2.4 .config
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make oldconfig
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make
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This will download the large source packages for the toolchain and build the toolchain.
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The resulting binaries will be under buildroot/build_m32c.
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Cygwin GCC BUILD NOTES
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^^^^^^^^^^^^^^^^^^^^^^
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On Cygwin, the buildroot 'make' command will fail with an error like:
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"...
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build/genchecksum cc1-dummy > cc1-checksum.c
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opening cc1-dummy: No such file or directory
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..."
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This is caused because on Cygwin, host executables will be generated with the extension .exe
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and, apparently, the make variable "exeext" is set incorrectly. A work around after the
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above occurs is:
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cd toolchain_build_m32c/gcc-4.2.4-initial/gcc # Go to the directory where error occurred
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mv cc1-dummy.exe cc1-dummy # Rename the executable without .exe
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rm cc1-checksum.c # Get rid of the bad generated file
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Then resume the buildroot make:
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cd - # Back to the buildroot make directory
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make # Restart the build
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GCC is built twice. First a initial, "bootstap" GCC is produced in
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toolchain_build_m32c/gcc-4.2.4-initial, then the final GCC is produced in
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toolchain_build_m32c/gcc-4.2.4-final. The above error will occur twice: Once for
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the intial GCC build (see above) and once for the final GCC build. For the final GCC
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build, the workaround is the same except that the directory will be toolchain_build_m32c/gcc-4.2.4-final/gcc.
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