diff options
Diffstat (limited to 'misc/buildroot/configs/README.txt')
| -rw-r--r-- | misc/buildroot/configs/README.txt | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/misc/buildroot/configs/README.txt b/misc/buildroot/configs/README.txt index 8f69961a6..bf016641d 100644 --- a/misc/buildroot/configs/README.txt +++ b/misc/buildroot/configs/README.txt @@ -8,8 +8,8 @@ arm7tdmi-defconfig-4.2.4 arm920t-defconfig-4.2.4 arm926t-defconfig-4.2.4 Builds an ARM toolchain using gcc 4.2.4. This configuration - builds both gcc and g++. There are thred versions: one for - arm7tdmi (armv4t) , arm920t (armv4t) and arm926t (arv5t) because + builds both gcc and g++. There are three versions: one for + arm7tdmi (armv4t), arm920t (armv4t) and arm926t (arv5t) because of differences in the way that soft floating is handled in between the armv4t and arm5t architectures. @@ -34,6 +34,11 @@ arm926t-defconfig-4.2.4 This change probably applies to other architectures as well (?) +arm920t-defconfig-4.3.3 + Builds an ARM toolchain using gcc 4.3.3. This configuration + builds both gcc and g++ for the arm920t (armv4t). It is an + update to arm920t-defconfig-4.2.4 (see notes above). + cortexm3-defconfig-4.3.3 Builds an ARM toolchain for the Cortex-M3 using gcc 4.3.3. This configuration builds both gcc and g++. @@ -58,12 +63,29 @@ sh-defconfig GENERAL BUILD STEPS ^^^^^^^^^^^^^^^^^^^ -1. CD to the correct directory. +1. Configure your host machine. You host PC should have a relatively complete + C development environment. I don't have a full list of the package requirements. + The later tool chains also require GMP and MPRF development packages or the + build will fail with errors like: + + "configure: error: Building GCC requires GMP 4.1+ and MPFR 2.3.0+. ... + Copies of these libraries' source code can be found at their respective + hosting sites as well as at ftp://gcc.gnu.org/pub/gcc/infrastructure/. + See also http://gcc.gnu.org/install/prerequisites.html for additional info. + If you obtained GMP and/or MPFR from a vendor distribution package, make + sure that you have installed both the libraries and the header files. + They may be located in separate packages." + + You should try your package manager for whatever Linux version you are using + first. The header files are normally included in versions of the packages that + have "-devel" in the package name. + +2. CD to the correct directory. Change to the directory just above the NuttX installation. If <nuttx-dir> is where NuttX is installed, then cd to <nuttx-dir>/.. -2. Get and Install the buildroot Module +3. Get and Install the buildroot Module a. Using a release tarball: @@ -73,7 +95,7 @@ GENERAL BUILD STEPS rename the directory to buildroot b. Using CVS - + Check out the misc/buildroot module. CVS checkout instructions: cvs -d:pserver:anonymous@nuttx.cvs.sourceforge.net:/cvsroot/nuttx login @@ -84,18 +106,18 @@ GENERAL BUILD STEPS mv misc/buildroot . Make the archive directory: - + mkdir archive The <nuttx-dir>/../buildroot is where the toolchain is built; The <nuttx-dir>/../archive directory is where toolchain sources will be downloaded. -3. Make sure that NuttX is configured +4. Make sure that NuttX is configured cd <nuttx-dir>/tools ./configure.sh <nuttx-configuration> - -4. Configure and Make the buildroot + +5. Configure and Make the buildroot cd buildroot cp configs/<config-file> .config |