1# 2# Sed script to parse CPP macros and generate output usable by make 3# 4# It is expected that this script is fed the output of 'gpp -dM' 5# which preprocesses the common.h header files and outputs the final 6# list of CPP macros (and whitespace is sanitized) 7# 8 9# Only process values prefixed with #define CONFIG_ 10/^#define CONFIG_[A-Za-z0-9_][A-Za-z0-9_]*/ { 11 # Strip the #define prefix 12 s/#define *//; 13 # Change to form CONFIG_*=VALUE 14 s/ */=/; 15 # Drop trailing spaces 16 s/ *$//; 17 # drop quotes around string values 18 s/="\(.*\)"$/=\1/; 19 # Concatenate string values 20 s/" *"//g; 21 # Assume strings as default - add quotes around values 22 s/=\(..*\)/="\1"/; 23 # but remove again from decimal numbers 24 s/="\([0-9][0-9]*\)"/=\1/; 25 # ... and from hex numbers 26 s/="\(0[Xx][0-9a-fA-F][0-9a-fA-F]*\)"/=\1/; 27 # ... and from configs defined from other configs 28 s/="\(CONFIG_[A-Za-z0-9_][A-Za-z0-9_]*\)"/=$(\1)/; 29 # Change '1' and empty values to "y" (not perfect, but 30 # supports conditional compilation in the makefiles 31 s/=$/=y/; 32 s/=1$/=y/; 33 # print the line 34 p 35} 36