Update README.md

README.md

@@ -8,62 +8,24 @@ and some of the required header files are generated from the Verilog code in
 This is Eclipse CDT project, and the [setup sctipt](https://github.com/Elphel/elphel393) copies
 project configuration (.project, .cproject, .settings) from eclipse_project_setup subdirectory.
 Eclipse should be started after Linux kernel is built with `bitbake linux-xlnx` at least once
-so all the required files are already present. Do noit run `bitbake linux-xlnx -c clean` while
-the project is open in Eclipse - this command deletes all he staged files (kernel sources) and
-Eclipse will reset all file filters, so .cproject file will have to be restored from
-*eclipse_project_setup*.
-
-In Yocto project source files are staged (downloaded and optionally patched), so *clean* re-downloads
-files and erases any of your files or changes if they were made in the source directory tree. This
-project keeps all the modified or new files in a sparse copy of the Linux kernel tree (*src*
-sub-directory) and the bitbake recepie (`bitbake linux-xlnx -c link`) adds symlinks to the actual
+so all the required files are already present. Then you may import *linux-elphel* as
+'existing Git project' in Eclipse (you need either Eclipse for C/C++ developmentg or intall [CDT
+plugin](https://eclipse.org/cdt/) separately.
+
+Do not run `bitbake linux-xlnx -c clean` while the project is open in Eclipse - this command
+will delete all he staged files (kernel sources) and Eclipse will reset all file filters, so
+*.cproject* file will have to be restored from *eclipse_project_setup*. 
+
+Source files in Yocto project are staged (downloaded and optionally patched), so `-c clean` re-downloads
+files and erases any of your files or changes if they were made in the source directory tree.
+*linux-elphel* project keeps all the modified or new files in a sparse copy of the Linux kernel tree (*src*
+sub-directory) and the bitbake recipe (`bitbake linux-xlnx -c link`) adds symlinks to the actual
 project files. When the full kernel is opened in Eclipse, the base kernel files are from the staging
 area (so will be refreshed after `-c clean`) and the project files edits will stay safe in the *src*
 subdirectory.
 
-The khelper.py script izs used to generate filters for the kernel by collecting information - which
-files where accessed during `bitbake linux-xlnx -s compile -f`, results are injected into
-
-
-##Downloading
-Code must be located in `poky/` directory. Navigate to `poky/` and run:
-```
-git clone https://github.com/Elphel/linux-elphel.git
-```
-##Generating links and headers
-Links between project tree and kernel source tree are generated by Bitbake during 'link' task when using `meta-elphel393`. Some required header files are automatically generated during the build process.
-```
-. ./oe-init-build-env
-bitbake linux-xlnx -c clean -f
-bitbake linux-xlnx -c link -f
-bitbake linux-xlnx -f
-```
-##Importing project into Eclipse
-Run Eclipse from its location directory and provide additional heap memory to it.
-```
-./eclipse -vmargs -Xmx4G
-```
-or just edit eclipse.ini (same directory as eclipse executable) and make sure -Xmx has at least 4G
-
- - File → Import... → General → Existing Project into Workspace
- - [Next] → Select root directory → Browse → specify project location (`poky/linux-elphel/`) → [OK] → [Finish]
-
-Project now is imported into Eclipse workspace.
+The khelper.py script is used to generate filters for the kernel by collecting information - which
+files where accessed during `bitbake linux-xlnx -s compile -f`, results are injected into *.cproject*
+configuratgion file, so any of the Linux kernel files that were not accessed during build will be marked
+as excluded from build (crossed out) and not resolved by the indexer.
 
- - Project → Properties
- - C/C++ General → Preprocessor Include Paths → Entries → GNU C → CDT User Settings
-   - [Add...] → Select "Preprocessor macros file" → `linux/include/generated/autoconf.h` → [OK]
-   - [Add...] → Select "Preprocessor macros file" → `linux/include/linux/compiler.h` → [OK]
-   - [Add...] → Select "Include file" → `linux/include/linux/kconfig.h` → [OK]
- - C/C++ General → Indexer
-   - Check “Enable project specific setttings”
-   - Check “Enable indexer”
-   - Uncheck “Index source files not included in the build”
-   - Uncheck “Index unused headers”
-   - Check “Index header variants”
-   - Uncheck “Index source and header files opened in editor”
-   - Uncheck “Allow heuristic resolution of includes”
-   - Set size of files to be skipped >100MB (effectively disabling this feature)
-   - Uncheck all “Skip…” options
- - [OK] to close the Advanced Settings window.
- - Project → C/C++ Index → Rebuild