On Thu, 16 Feb 2012 11:09:18 -0800, Michal Nazarewicz wrote:
On Thu, 16 Feb 2012 06:31:28 -0800, Radosław Smogura
<mail@xxxxxxxxxx> wrote:
Supporting files, like Kconfig, Makefile are auto-generated due to
large amount
of available options.
So why not run the script as part of make rather then store generated
files in
repository?
Idea to run this script through make is quite good, and should work,
because new mane will be generated before "config" starts.
"Bashizms" are indeed unneeded, I will try to replace this with sed.
diff --git a/scripts/debug/make_config_optim.sh
b/scripts/debug/make_config_optim.sh
new file mode 100644
index 0000000..26865923
--- /dev/null
+++ b/scripts/debug/make_config_optim.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
The below won't run on POSIX-compatible sh. Address my comments
below to fix that.
+
+## Utility script for generating optimization override options
+## for kernel compilation.
+##
+## Distributed under GPL v2 license
+## (c) Radosław Smogura, 2011
+
+# Prefix added for variable
+CFG_PREFIX="HACK_OPTIM"
+
+KCFG="Kconfig.debug.optim"
+MKFI="Makefile.optim.inc"
How about names that mean something?
KCONFIG=...
MAKEFILE=...
+
+OPTIMIZATIONS_PARAMS="-fno-inline-functions-called-once \
+ -fno-combine-stack-adjustments \
+ -fno-tree-dce \
+ -fno-tree-dominator-opts \
+ -fno-dse "
Slashes at end of lines are not necessary here.
+
+echo "# This file was auto generated. It's utility configuration" >
$KCFG
+echo "# Distributed under GPL v2 License" >> $KCFG
+echo >> $KCFG
+echo "menuconfig ${CFG_PREFIX}" >> $KCFG
+echo -e "\tbool \"Allows to override GCC optimization\"" >> $KCFG
+echo -e "\tdepends on DEBUG_KERNEL && EXPERIMENTAL" >> $KCFG
+echo -e "\thelp" >> $KCFG
+echo -e "\t If you say Y here you will be able to override" >>
$KCFG
+echo -e "\t how GCC optimize kernel code. This will create" >>
$KCFG
+echo -e "\t more debug friendly, but with not guarentee" >>
$KCFG
+echo -e "\t about same runi, like production, kernel." >>
$KCFG
+echo >> $KCFG
+echo -e "\t If you say Y here probably You will want say" >>
$KCFG
+echo -e "\t for all suboptions" >> $KCFG
+echo >> $KCFG
+echo "if ${CFG_PREFIX}" >> $KCFG
+echo >> $KCFG
Use:
cat > $KCFG <<EOF
...
EOF
through the file (of course, in next runs you'll need to use “>>
$KCFG”).
More readable and also “-e” argument to echo is bash-specific.
Alternatively to using “> $KCFG” all the time, you can also do:
exec 3> Kconfig.debug.optim
exec 4> Makefile.optim.inc
at the beginning of the script and later use >&3 and >&4, which will
save
you some open/close calls and make the strangely named $KCFG and
$MKFI
variables no longer needed.
+
+echo "# This file was auto generated. It's utility configuration" >
$MKFI
+echo "# Distributed under GPL v2 License" >> $MKFI
+echo >> $MKFI
+
+# Insert standard override optimization level
+# This is exception, and this value will not be included
+# in auto generated makefile. Support for this value
+# is hard coded in main Makefile.
+echo -e "config ${CFG_PREFIX}_FORCE_O1_LEVEL" >> $KCFG
+echo -e "\tbool \"Forces -O1 optimization level\"" >> $KCFG
+echo -e "\t---help---" >> $KCFG
+echo -e "\t This will change how GCC optimize code. Code" >> $KCFG
+echo -e "\t may be slower and larger but will be more debug" >>
$KCFG
+echo -e "\t \"friendly\"." >> $KCFG
+echo >> $KCFG
+echo -e "\t In some cases there is low chance that kernel" >>
$KCFG
+echo -e "\t will run different then normal, reporting or not" >>
$KCFG
+echo -e "\t some bugs or errors. Refere to GCC manual for" >>
$KCFG
+echo -e "\t more details." >> $KCFG
+echo >> $KCFG
+echo -e "\t You SHOULD say N here." >> $KCFG
+echo >> $KCFG
+
+for o in $OPTIMIZATIONS_PARAMS ; do
+ cfg_o="${CFG_PREFIX}_${o//-/_}";
cfg_o=$CFG_PREFIX_$(echo "$o" | tr '[:lower:]-' '[:upper:]_')
+ echo "Processing param ${o} config variable will be $cfg_o";
+
+ # Generate kconfig entry
+ echo -e "config ${cfg_o}" >> $KCFG
+ echo -e "\tbool \"Adds $o parameter to gcc invoke line.\"" >>
$KCFG
+ echo -e "\t---help---" >> $KCFG
+ echo -e "\t This will change how GCC optimize code. Code" >>
$KCFG
+ echo -e "\t may be slower and larger but will be more debug" >>
$KCFG
+ echo -e "\t \"friendly\"." >> $KCFG
+ echo >> $KCFG
+ echo -e "\t In some cases there is low chance that kernel" >>
$KCFG
+ echo -e "\t will run different then normal, reporting or not" >>
$KCFG
+ echo -e "\t some bugs or errors. Refere to GCC manual for" >>
$KCFG
+ echo -e "\t more details." >> $KCFG
+ echo >> $KCFG
+ echo -e "\t You SHOULD say N here." >> $KCFG
+ echo >> $KCFG
+
+ #Generate Make for include
+ echo "ifdef CONFIG_${cfg_o}" >> $MKFI
+ echo -e "\tKBUILD_CFLAGS += $o" >> $MKFI
+ echo "endif" >> $MKFI
+ echo >> $MKFI
+done;
+echo "endif #${CFG_PREFIX}" >> $KCFG
--
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