From c8f795ba53acfe0239bfa5d75f64dce8e390a992 Mon Sep 17 00:00:00 2001
From: наб <nabijaczleweli@nabijaczleweli.xyz>
Date: Thu, 23 Dec 2021 21:26:19 +0100
Subject: config: check for parallel(1), use it for cstyle
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Before:
$ time make cstyle
real    0m23.118s
user    0m23.002s
sys     0m0.114s

After:
$ time make cstyle
real    0m4.577s
user    0m31.487s
sys     0m0.699s

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Issue #12899
---
 Makefile.am | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'Makefile.am')

diff --git a/Makefile.am b/Makefile.am
index 7e2b10b39..36d8cd2d6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -114,6 +114,11 @@ commitcheck:
 		${top_srcdir}/scripts/commitcheck.sh; \
 	fi
 
+if HAVE_PARALLEL
+cstyle_line = -print0 | parallel -X0 ${top_srcdir}/scripts/cstyle.pl -cpP {}
+else
+cstyle_line = -exec ${top_srcdir}/scripts/cstyle.pl -cpP {} +
+endif
 PHONY += cstyle
 cstyle:
 	@find ${top_srcdir} -name build -prune \
@@ -122,7 +127,7 @@ cstyle:
 		! -name 'opt_global.h' ! -name '*_if*.h' \
 		! -name 'zstd_compat_wrapper.h' \
 		! -path './module/zstd/lib/*' \
-		-exec ${top_srcdir}/scripts/cstyle.pl -cpP {} \+
+		$(cstyle_line)
 
 filter_executable = -exec test -x '{}' \; -print
 
-- 
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