[coreboot] v2: Watching dependencies for auto.c

[Mats Erik Andersson]

Hello again,

the following tool calculates the dependencies in
$(MAINBOARD)/auto.c and inserts these into the
two makefiles for normal and fallback images.
It intentionally disregards the referenced
header files, but instead it helped me to find
an incorrect inclusion of bist.h in the basis
I presently use. Thus you might be forced to
inspect these by hand, after running the script.
Once again, the script only searches for lines
of the type

	#include "whatever/you/like"

The call is simple enough:

	watch_auto_c.sh targets/msi/ms6147/ms6147/

Please regard this snippet as taster of what could
be done, were the incorporated dependencies deeper
in the python tool itself. Already now the manipulated
makefiles catch very well the groundwork changes I
do to the subsystems for the boot images.

Best regards for now,

Mats E Andersson

---

#!/bin/sh
#
# A tool to include direct dependencies for auto.c.
# A constant is built containing these dependencies,
# and is then inserted into {normal,fallback}/Makefile.
#
if [ -z "$1" ];then
	echo "A target directory is mandatory. Aborting."
	exit 1
fi

if [ ! -s "$1/Makefile" ]; then
	echo "Wrong directory, or \"Makefile\" is missing."
	exit 1
fi

if grep -q AUTO_C_INCLUDES $1/fallback/Makefile; then
	echo "Already done."
	exit 0
fi

TOP=$(sed -n 's/TOP:=\(.*\)/\1/p' $1/Makefile.settings)
TARGET_DIR=$(sed -n 's/TARGET_DIR:=\(.*\)/\1/p' $1/Makefile.settings)
TARGET_DIR=$(dirname $TARGET_DIR)

AUTO_C_INCLUDES=$(perl -n -e 'if ( m/^\s*#\s*include\s*"/ ) { m/"(.*)"/; print "\$\(TOP\)/src/" . $1 . " ";};' $TOP/src/mainboard/$TARGET_DIR/auto.c)

for nn in $1/{normal,fallback}/Makefile; do
	sed -i "/^CRT0_INCLUDES/,/^$/ {/^$/a\
AUTO_C_INCLUDES:=$AUTO_C_INCLUDES\n
}; s/.*:.*\/auto\.c.*/& \$(AUTO_C_INCLUDES)/;" $nn
done