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sanity.bbclass: Update gcc sanity check 

The gcc sanity check should be checking for the atomic function directly
instead of using the gcc macro.  Older versions of gcc do not have the macro
defined, but do support the atomic operations.  (glib-2.0 checks for both
the macro and the function, as long as one is available it will successfully
compile.)

Update the check to try both -mcpu=native and -mcpu=BUILD_ARCH.  Tell the user
which version worked properly.

[YOCTO #4845]

(From OE-Core rev: c126729b29822d3602c9c4fd9016cc79b6057fc5)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Mark Hatle 2013-07-15 15:10:26 -05:00 committed by Richard Purdie
parent 344cf64642
commit 4a6f939b4d
1 changed files with 29 additions and 13 deletions
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42
meta/classes/sanity.bbclass
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@ -280,31 +280,42 @@ def check_sanity_validmachine(sanity_data):
# Checks if necessary to add option march to host gcc
def check_gcc_march(sanity_data):
result = False
result = True
message = ""
# Check if -march not in BUILD_CFLAGS
if sanity_data.getVar("BUILD_CFLAGS",True).find("-march") < 0:
result = False
# Construct a test file
f = open("gcc_test.c", "w")
f.write("int main (){ __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4; return 0;}\n")
f.write("int main (){ volatile int atomic = 2; __sync_bool_compare_and_swap (&atomic, 2, 3); return 0; }\n")
f.close()
# Check if GCC could work without march
status,result = oe.utils.getstatusoutput("${BUILD_PREFIX}gcc gcc_test.c -o gcc_test")
if status != 0:
# Check if GCC could work with march
status,result = oe.utils.getstatusoutput("${BUILD_PREFIX}gcc -march=native gcc_test.c -o gcc_test")
if status != 0:
result = True
else:
result = False
if not result:
status,res = oe.utils.getstatusoutput("${BUILD_PREFIX}gcc gcc_test.c -o gcc_test")
if status == 0:
result = True;
if not result:
status,res = oe.utils.getstatusoutput("${BUILD_PREFIX}gcc -march=native gcc_test.c -o gcc_test")
if status == 0:
message = "BUILD_CFLAGS_append = \" -march=native\""
result = True;
if not result:
build_arch = sanity_data.getVar('BUILD_ARCH', True)
status,res = oe.utils.getstatusoutput("${BUILD_PREFIX}gcc -march=%s gcc_test.c -o gcc_test" % build_arch)
if status == 0:
message = "BUILD_CFLAGS_append = \" -march=%s\"" % build_arch
result = True;
os.remove("gcc_test.c")
if os.path.exists("gcc_test"):
os.remove("gcc_test")
return result
return (result, message)
# Unpatched versions of make 3.82 are known to be broken. See GNU Savannah Bug 30612.
# Use a modified reproducer from http://savannah.gnu.org/bugs/?30612 to validate.
@ -506,9 +517,14 @@ def check_sanity_version_change(status, d):
if not check_app_exists("qemu-arm", d):
status.addresult("qemu-native was in ASSUME_PROVIDED but the QEMU binaries (qemu-arm) can't be found in PATH")
if check_gcc_march(d):
(result, message) = check_gcc_march(d)
if result and message:
status.addresult("Your gcc version is older than 4.5, please add the following param to local.conf\n \
BUILD_CFLAGS_append = \" -march=native\"\n")
%s\n" % message)
if not result:
status.addresult("Your gcc version is older then 4.5 or is not working properly. Please verify you can build")
status.addresult(" and link something that uses atomic operations, such as: \n")
status.addresult(" __sync_bool_compare_and_swap (&atomic, 2, 3);\n")
# Check that TMPDIR isn't on a filesystem with limited filename length (eg. eCryptFS)
tmpdir = d.getVar('TMPDIR', True)