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author | Grant Likely <grant.likely@secretlab.ca> | 2007-09-24 19:05:31 +0400 |
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committer | Grant Likely <grant.likely@secretlab.ca> | 2007-11-21 08:33:38 +0300 |
commit | 2f155f6c0a1f5e9a306a3f1f4fbe067db7ced3b1 (patch) | |
tree | 872745bafb23aa357e7abbdfed81d17c0250ca85 /tools | |
parent | f92edbd8a0ef16a2b9127cbb564c09685728e4b0 (diff) | |
download | u-boot-2f155f6c0a1f5e9a306a3f1f4fbe067db7ced3b1.tar.xz |
[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>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/scripts/define2mk.sed | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/scripts/define2mk.sed b/tools/scripts/define2mk.sed new file mode 100644 index 0000000000..6464627ea4 --- /dev/null +++ b/tools/scripts/define2mk.sed @@ -0,0 +1,29 @@ +# +# 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 +} |