[BUILD] Generate include/autoconf.mk from board config files

[u-boot] / tools / scripts / define2mk.sed

diff --git a/tools/scripts/define2mk.sed b/tools/scripts/define2mk.sed
new file mode 100644 (file)
index 0000000..6464627
--- /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
+}