When the length of TMPDIR is longer than a threshold, there would be an
"Argument list too long" error when building gcc-cross, this is the
error from the exec(), the maximum length of argument is defined in
/usr/include/linux/limits.h:
#define ARG_MAX 131072 /* # bytes of args + environ for exec() */
It's hard to determine the threshold of the TMPDIR, here is the
experimental value:
len(TMPDIR) = 182 Success
len(TMPDIR) = 192 Failed
So set the maximum length of TMPDIR to 180 seems proper.
[YOCTO #2434]
Signed-off-by: Robert Yang <liezhi.y...@windriver.com>
---
meta/classes/sanity.bbclass | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 687ddeb..6aaac1e 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -30,6 +30,7 @@ def check_sanity_sstate_dir_change(sstate_dir, data):
testmsg = ""
if sstate_dir != "":
testmsg = check_create_long_filename(sstate_dir, "SSTATE_DIR")
+
return testmsg
def check_sanity_tmpdir_change(tmpdir, data):
@@ -83,6 +84,12 @@ def check_create_long_filename(filepath, pathname):
return "Failed to create a file in %s: %s" % (pathname, strerror)
return ""
+def check_long_path(filepath, pathname):
+ # The 180 is just an empirical value
+ if len(filepath) > 180:
+ return "The path length of %s is too long, this would cause the
\"Argument list too long\" error, please use a shorter path.\n" % pathname
+ return ""
+
def check_connectivity(d):
# URI's to check can be set in the CONNECTIVITY_CHECK_URIS variable
# using the same syntax as for SRC_URI. If the variable is not set
@@ -353,6 +360,10 @@ def check_sanity(e):
tmpdir = data.getVar('TMPDIR', e.data, True)
sstate_dir = data.getVar('SSTATE_DIR', e.data, True)
+ # Check whether the length of TMPDIR is too long to cause the
+ # argument list too long error
+ messages = messages + check_long_path(tmpdir, "TMPDIR")
+
# Check saved sanity info
last_sanity_version = 0
last_tmpdir = ""
--
1.7.1
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