New patch to review for coreboot: util/xcompile: parallelize compiler checks

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18262

-gerrit

commit fdb63e7cf38c114ced67a6f3d03fbeb442376876
Author: Patrick Georgi 
Date:   Mon Jan 30 15:27:35 2017 +0100

util/xcompile: parallelize compiler checks

Speed up the execution of this script from ~6 seconds to ~1 on my
    system.
    There are some changes to its output, but they're actually _more_
    correct: so far, architectures without compiler support kept compiler
    options for architectures that ran successfully earlier.

Change-Id: I0532ea2178fbedb114a75cfd5ba39301e534e742
    Signed-off-by: Patrick Georgi 
---
 util/xcompile/xcompile | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile
index 90220f6..ec295a9 100755
--- a/util/xcompile/xcompile
+++ b/util/xcompile/xcompile
@@ -58,7 +58,7 @@ clean_up() {

# Create temporary file(s).
 TMPFILE="$(mktemp /tmp/temp.XXXXXX 2>/dev/null || echo /tmp/temp.coreboot.$RANDOM)"
-touch "$TMPFILE"
+rm -f "$TMPFILE"
 trap clean_up EXIT

@@ -438,11 +438,24 @@ test_architecture() {
    fi
 }

-# This loops over all supported architectures.
+OUT="$(mktemp /tmp/temp.XXXXXX 2>/dev/null || echo /tmp/temp.coreboot.$RANDOM)"
+rm -f $OUT
+
 for architecture in $SUPPORTED_ARCHITECTURES; do
+	(
+	TMPFILE="$(mktemp /tmp/temp.XXXXXX 2>/dev/null || echo /tmp/temp.coreboot.$RANDOM)"
+	touch $TMPFILE
    test_architecture "$architecture"
    detect_special_flags "$architecture"
    detect_compiler_runtime "$architecture"
    report_arch_toolchain
+	clean_up
+	) > $OUT.$architecture &
+done
+wait
+
+for architecture in $SUPPORTED_ARCHITECTURES; do
+	cat $OUT.$architecture
+	rm -f $OUT.$architecture
 done
 echo XCOMPILE_COMPLETE:=1