2 # Sed script to parse CPP macros and generate output usable by make
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)
9 # Only process values prefixed with #define CONFIG_
10 /^#define CONFIG_[A-Za-z0-9_][A-Za-z0-9_]*/ {
11 # Strip the #define prefix
13 # Change to form CONFIG_*=VALUE
15 # Drop trailing spaces
17 # drop quotes around string values
19 # Concatenate string values
21 # Assume strings as default - add quotes around values
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