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make[1]: Entering directory 'src'
egrep: warning: egrep is obsolescent; using grep -E
grep: warning: stray \ before #
egrep: warning: egrep is obsolescent; using grep -E
grep: warning: stray \ before #
egrep: warning: egrep is obsolescent; using grep -E
grep: warning: stray \ before #
egrep: warning: egrep is obsolescent; using grep -E
grep: warning: stray \ before #
egrep: warning: egrep is obsolescent; using grep -E
grep: warning: stray \ before #
egrep: warning: egrep is obsolescent; using grep -E
grep: warning: stray \ before #
* it seems using egrep is depreciated and grep -E should be used instead. egrep is used quite often:
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$ grep -r egrep external/ChibiOS/* | wc
112 1257 17896
* the other warning is about an unnecessary backslash before a hash. i used to see sthg like this
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egrep -e "\#define"