diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/manual/rebuilding-packages.txt | 65 |
1 files changed, 41 insertions, 24 deletions
diff --git a/docs/manual/rebuilding-packages.txt b/docs/manual/rebuilding-packages.txt index 824b35c32..222520020 100644 --- a/docs/manual/rebuilding-packages.txt +++ b/docs/manual/rebuilding-packages.txt @@ -1,5 +1,39 @@ // -*- mode:doc -*- ; +[[full-rebuild]] +Understanding when a full rebuild is necessary +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +A full rebuild is achieved by running: + +--------------- +$ make clean all +--------------- + +In what cases, a full rebuild is mandatory: + +* each time the toolchain properties are changed, this includes: + +** after changing some toolchain option under the _Toolchain_ menu (if + the internal Buildroot backend is used); +** after running +make ctng-menuconfig+ (if the crosstool-NG backend + is used); +** after running +make uclibc-menuconfig+. + +* after removing some libraries from the package selection. + +In what cases, a full rebuild is recommended: + +* after adding some libraries to the package selection (otherwise, + some packages that can be optionally linked against those libraries + won't be rebuilt, so they won't support those new available + features). + +In other cases, it is up to you to decide if you should or not run a +full rebuild, but you should know what is impacted and understand what +you are doing anyway. + +[[rebuild-pkg]] Understanding how to rebuild packages ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -42,27 +76,10 @@ files are relevant: Buildroot will trigger the recompilation of the package from the compilation step (execution of +make+). -For other packages, an analysis of the specific 'package.mk' file is -needed. For example, the zlib Makefile used to look like this (before -it was converted to the generic package infrastructure): - ------------------ -$(ZLIB_DIR)/.configured: $(ZLIB_DIR)/.patched - (cd $(ZLIB_DIR); rm -rf config.cache; \ - [...] - ) - touch $@ - -$(ZLIB_DIR)/libz.a: $(ZLIB_DIR)/.configured - $(MAKE) -C $(ZLIB_DIR) all libz.a - touch -c $@ ------------------ - -If you want to trigger the reconfiguration, you need to remove -+output/build/zlib-version/.configured+. If you want to trigger only -the recompilation, you need to remove -+output/build/zlib-version/libz.a+. - -Note that most packages, if not all, will progressively be ported over -to the generic or autotools infrastructure, making it much easier to -rebuild individual packages. +.Notes +- Since the _Buildroot-2012.11_ release, all packages rely on the +Buildroot infrastructures. +- Only toolchain packages remain using custom makefiles (i.e. do not +use any Buildroot infrastructure). +- Most packages and toolchain packages, if not all, will progressively +be ported over to the generic, autotools or CMake infrastructure, |