u-boot/tools/scripts/define2mk.sed
Grant Likely 2f155f6c0a [BUILD] Generate include/autoconf.mk from board config files
Use cpp and sed to postprocess config.h and import the defined values
into include/autoconf.mk.  autoconf.mk is then included by config.mk to
give 'make' access to the board configuration.

Doing this enables conditional compilation at the Makefile level instead
of by wrapping every .c file with #ifdef/#endif wrappers.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2007-11-20 22:33:38 -07:00

29 lines
792 B
Sed

#
# Sed script to parse CPP macros and generate output usable by make
#
# It is expected that this script is fed the output of 'gpp -dM'
# which preprocesses the common.h header files and outputs the final
# list of CPP macros (and whitespace is sanitized)
#
# Only process values prefixed with #define CONFIG_
/^#define CONFIG_[A-Za-z0-9_]\+/ {
# Strip the #define prefix
s/#define *//;
# Change to form CONFIG_*=VALUE
s/ \+/=/;
# Drop trailing spaces
s/ *$//;
# drop quotes around string values
s/="\(.*\)"$/=\1/;
# Concatenate string values
s/" *"//g;
# Wrap non-numeral values with quotes
s/=\(.*\?[^0-9].*\)$/=\"\1\"/;
# Change '1' and empty values to "y" (not perfect, but
# supports conditional compilation in the makefiles
s/=$/=y/;
s/=1$/=y/;
# print the line
p
}