diff options
Diffstat (limited to 'nuttx/README.txt')
| -rw-r--r-- | nuttx/README.txt | 55 |
1 files changed, 41 insertions, 14 deletions
diff --git a/nuttx/README.txt b/nuttx/README.txt index 2ff473fa0..da1ed10c6 100644 --- a/nuttx/README.txt +++ b/nuttx/README.txt @@ -280,8 +280,14 @@ NuttX Configuration Tool make menuconfig - This make target will bring up NuttX configuration menus. The - 'menuconfig' target depends on two things: + This make target will bring up NuttX configuration menus. + + WARNING: Never do 'make menuconfig' on a configuration that has + not been converted to use the kconfig-frontends tools! This will + damage your configuration (see + http://www.nuttx.org/doku.php?id=wiki:howtos:convertconfig). + + The 'menuconfig' make target depends on two things: 1. The Kconfig configuration data files that appear in almost all NuttX directories. These data files are the part that is still @@ -319,6 +325,22 @@ NuttX Configuration Tool This is pretty straight forward for creating new configurations but may be less intuitive for modifying existing configurations. +Refreshing Configurations with 'make oldconfig' +----------------------------------------------- + + Whenever you use a configuration, you really should always do + the following *before* you make NuttX: + + make oldconfig + + This will make sure that the configuration is up-to-date in + the event that it has lapsed behind the current NuttX development. + + WARNING: Never do 'make oldconfig' (OR 'make menuconfig') on a + configuration that has not been converted to use the kconfig-frontends + tools! This will damage your configuration (see + http://www.nuttx.org/doku.php?id=wiki:howtos:convertconfig). + Incompatibilities with Older Configurations ------------------------------------------- @@ -501,8 +523,21 @@ NuttX Buildroot Toolchain Disadvantages: This tool chain is not was well supported as some other toolchains. GNU tools are not my priority and so the buildroot tools - often get behind. For example, the is still no EABI support in the - NuttX buildroot toolchain for ARM. + often get behind. For example, until recently there was no EABI support + in the NuttX buildroot toolchain for ARM. + + NOTE: For Cortex-M3/4, there are OABI and EABI versions of the buildroot + toolchains. If you are using the older OABI toolchain the prefix for + the tools will be arm-nuttx-elf-; for the EABI toolchin the prefix will + be arm-nuttx-eabi-. If you are using the older OABI toolchain with + an ARM Cortex-M3/4, you will need to set CONFIG_ARMV7M_OABI_TOOLCHAIN + in the .config file in order to pick the right tool prefix. + + If the make system ever picks the wrong prefix for your toolchain, you + can always specify the prefix on the command to override the default + like: + + make CROSSDEV=arm-nuttx-elf SHELLS ^^^^^^ @@ -1159,17 +1194,9 @@ apps |- NxWidgets/ | `- README.txt |- system/ - | |- i2c/README.txt - | |- free/README.txt - | |- install - | | `- README.txt - | |- poweroff - | | `- README.txt - | |- ramtron - | | `- README.txt - | |- sdcard + | |- i2c | | `- README.txt - | `- sysinfo + | `- install | `- README.txt `- README.txt |