From b25271b65262f70d849a4861da216c9be6c54d53 Mon Sep 17 00:00:00 2001 From: Robert Yang Date: Thu, 6 Dec 2018 18:55:29 -0800 Subject: ccache.bbclass: Refactor it to make it more reliable The previous ccache.bbclass has the following problems: - It uses host's ccache for native recipes, but this may not work on some hosts, for example, it nerver works on my Ubuntu 14.04.4, there are always build failures (m4-native failed at do_configure, and others will also be failed if I disable CCACHE for m4-native) - native/nativesdk/cross/crosssdk recipes use host's ccache, but target uses ccache-native, this may confuse user. - The target recipes may use both host's ccache and ccache-native, this may cause unexpected problems and be hard to debug. This is because ccache-native is in SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS, so ccache-native may not be present when rebuild target recipes, and then it would use hosttools/ccache, but the previous ccache files were generated by ccache-native. - Target recipes can't use ccache when no ccache is installed on the host: CCACHE = "${@bb.utils.which(d.getVar('PATH'), 'ccache') and 'ccache '}" After refactored: All types recipes (native, target and others) will use ccache-native except ccache-native itself, host's cache won't be used any more. It is more reliable now, which will work everywhere when ccache-native can be built. And now we need use "CCACHE_DISABLE = '1'" to disable ccache for the recipe rather than "CCACHE = ''" since we set CCACHE in anonymous function, and d.getVar('CCACHE') works after "CCACHE ??=" which is set in bitbake.conf, so we can't check whether CCACHE is set or not in anonymous function since it is always set. Use CCACHE_DISABLE to disable it would be more clear. Signed-off-by: Robert Yang --- meta/lib/oe/utils.py | 3 +++ 1 file changed, 3 insertions(+) (limited to 'meta/lib/oe/utils.py') diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py index 29b41151d4..ee6f0e6647 100644 --- a/meta/lib/oe/utils.py +++ b/meta/lib/oe/utils.py @@ -363,6 +363,9 @@ def host_gcc_version(d, taskcontextonly=False): return compiler = d.getVar("BUILD_CC") + # Get rid of ccache since it is not present when parsing. + if compiler.startswith('ccache '): + compiler = compiler[7:] try: env = os.environ.copy() env["PATH"] = d.getVar("PATH") -- cgit 1.2.3-korg