flex -t src/contrail-common/sandesh/compiler/sandeshy.ll > build/debug/tools/sandesh/compiler/sandeshy.cc src/contrail-common/sandesh/compiler/sandeshy.ll:64: unrecognized '%' directive

[salimep]

Dears,

Getting below exception while building sandesh packages from source , kindly advise, also note that we have renamed the file from .yy extension to ll because of error in while Configuring SConstruct file error was .yy file extension was not valid it should be ll or lm

Error while running scons

scons -j ${JOBS_COUNT:-$(grep -c processor /proc/cpuinfo || echo 1)} --without-dpdk
scons: Reading SConscript files ...
('Ubuntu', '20.04', 'focal')
('Ubuntu', '20.04', 'focal')
('Ubuntu', '20.04', 'focal')

scons: *** While building `['sandeshy.cc']' from `['/root/salim/src/contrail-common/sandesh/compiler/sandeshy.yy']': Don't know how to build from a source file with suffix `.yy'.  Expected a suffix in this list: ['.lm', '.ll'].
File "/root/salim/src/contrail-common/sandesh/compiler/SConscript", line 28, in <module>

after we change to ll extension error as-shown in below

`scons: done reading SConscript files.
scons: Building targets ...
scons: `build/lib/libsandesh-c.a' is up to date.
flex -t src/contrail-common/sandesh/compiler/sandeshy.ll > build/debug/tools/sandesh/compiler/sandeshy.cc
src/contrail-common/sandesh/compiler/sandeshy.ll:64: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:87: bad character: }
src/contrail-common/sandesh/compiler/sandeshy.ll:92: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:93: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:94: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:95: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:96: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:101: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:102: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:107: unrecognized '%' directive
src/contrail-common/sandesh/compiler/sandeshy.ll:271: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:272: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:272: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:272: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:278: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:283: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:283: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:283: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:296: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:296: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:296: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:304: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:304: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:304: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:311: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:311: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:321: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:321: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:328: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:328: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:336: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:336: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:336: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:337: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:337: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:339: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:345: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:345: unrecognized rule
src/contrail-common/sandesh/compiler/sandeshy.ll:352: unrecognized rule
scons: *** [build/debug/tools/sandesh/compiler/sandeshy.cc] Error 1
scons: building terminated because of errors.

`