4366 2013-04-22 05:59:28 +0000 Several variables' assignments are hard to understand 2013-10-02 09:59:39 +0000 1 1 7 Build System, Metadata & Runtime OE-Core configuration 1.5 x86 Multiple VERIFIED WONTFIX Low enhancement 1.5 M3 1 liezhi.yang Qi.Chen corneliux.stoicescu mark.hatle Qi.Chen richard.purdie sgw --- --- No (bug/feature does not impact docs) oldest_to_newest 32423 0 liezhi.yang 2013-04-22 05:59:28 +0000 Several variables' assignments are hard to understand, e.g., in bitbake.conf: TARGET_SYS = "${TARGET_ARCH}${TARGET_VENDOR}${@['-' + d.getVar('TARGET_OS', True), ''][d.getVar('TARGET_OS', True) == ('' or 'custom')]}" MACHINE_ARCH = "${@[d.getVar('TUNE_PKGARCH', True), d.getVar('MACHINE', True)][bool(d.getVar('MACHINE', True))].replace('-', '_')}" Can we find a new way for the assignments ? For example, put the expression in the function or create a new syntax. 34421 1 Qi.Chen 2013-07-09 08:48:59 +0000 Hi All, I've extracted those seemingly hard-to-understand lines from bitbake.conf. TARGET_SYS = "${TARGET_ARCH}${TARGET_VENDOR}${@['-' + d.getVar('TARGET_OS', True), ''][d.getVar('TARGET_OS', True) == ('' or 'custom')]}" SDK_SYS = "${SDK_ARCH}${SDK_VENDOR}${@['-' + d.getVar('SDK_OS', True), ''][d.getVar('SDK_OS', True) == ('' or 'custom')]}" MACHINE_ARCH = "${@[d.getVar('TUNE_PKGARCH', True), d.getVar('MACHINE', True)][bool(d.getVar('MACHINE', True))].replace('-', '_')}" EXTENDPE = "${@['','${PE\x7d_'][int(d.getVar('PE',1) or 0) > 0]}" EXTENDPRAUTO = "${@['.${PRAUTO\x7d',''][d.getVar('PRAUTO',1) is None]}" EXTENDPKGEVER = "${@['','${PKGE\x7d:'][d.getVar('PKGE',1).strip() != '']}" FILES_${PN}-dbg = "${@d.getVar(['DOTDEBUG-dbg', 'DEBUGFILEDIRECTORY-dbg'][d.getVar('PACKAGE_DEBUG_SPLIT_STYLE', True) == 'debug-file-directory'], True)}" export CCACHE_DISABLE ??= "${@[0,1][d.getVar('CCACHE', True) == '']}" SELECTED_OPTIMIZATION = "${@d.getVar(['FULL_OPTIMIZATION', 'DEBUG_OPTIMIZATION'][d.getVar('DEBUG_BUILD', True) == '1'], True)}" These lines have one thing in common, that is, they choose between value1 and value2 according to condition. I don't see an easier way to do this than [value1,value2][condition]. The true problem here, from my point of view, is lack of documentation of these variables. For example, I can't find MACHINE_ARCH, TARGET_SYS and SDK_SYS in the glossary section of the reference manual. P.S. The assignment is kind of weird for TARGET_SYS and SDK_SYS, as ('' or 'custom') equals to 'custom'. I think what is expected is: TARGET_SYS = "${TARGET_ARCH}${TARGET_VENDOR}${@['-' + d.getVar('TARGET_OS', True), ''][d.getVar('TARGET_OS', True) == '' or d.getVar('TARGET_OS', True) == 'custom']}" 34424 2 Qi.Chen 2013-07-09 09:09:27 +0000 Close this bug. Reason detailed in the last comment. //Chen Qi 37457 3 corneliux.stoicescu 2013-10-02 09:59:39 +0000 There have been no modification done to bitbake.conf on behalf of this bug. Verified in: poky master:4d8ab87d25ea6e59dc88375813ef88ee0ac813d0