From 58d6a1f227a09da0d17c0252978a583ff8e8b38e Mon Sep 17 00:00:00 2001
From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Tue, 19 Jul 2016 04:45:19 +0200
Subject: [PATCH] gnu: Add cpupower.
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* gnu/packages/linux.scm (cpupower): New variable.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
---
gnu/packages/linux.scm | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index d20314fc60..291ae0b4df 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -2752,3 +2752,41 @@ from that to the system kernel's @file{/dev/random} machinery.")
;; The source package is offered under the GPL2+, but the files
;; 'rngd_rdrand.c' and 'rdrand_asm.S' are only available under the GPL2.
(license (list license:gpl2 license:gpl2+))))
+
+(define-public cpupower
+ (package
+ (name "cpupower")
+ (version (package-version linux-libre))
+ (source (package-source linux-libre))
+ (build-system gnu-build-system)
+ (arguments
+ '(#:phases (modify-phases %standard-phases
+ (add-after 'unpack 'enter-subdirectory
+ (lambda _
+ (chdir "tools/power/cpupower")))
+ (delete 'configure)
+ (add-before 'build 'fix-makefiles
+ (lambda _
+ (substitute* "Makefile"
+ (("/usr/") "/")
+ (("/bin/(install|pwd)" _ command) command))
+ (substitute* "bench/Makefile"
+ (("\\$\\(CC\\) -o") "$(CC) $(LDFLAGS) -o")))))
+ #:make-flags (let ((out (assoc-ref %outputs "out")))
+ (list (string-append "DESTDIR=" out)
+ (string-append "LDFLAGS=-Wl,-rpath=" out "/lib")
+ "docdir=/share/doc/cpupower"
+ "confdir=$(docdir)/examples"
+ ;; The Makefile recommends the following changes
+ "DEBUG=false"
+ "PACKAGE_BUGREPORT=bug-guix@gnu.org"))
+ #:tests? #f)) ;no tests
+ (native-inputs `(("gettext" ,gnu-gettext)))
+ (inputs `(("pciutils" ,pciutils)))
+ (home-page (package-home-page linux-libre))
+ (synopsis "CPU frequency and voltage scaling tools for Linux")
+ (description
+ "cpupower is a set of user-space tools that use the cpufreq feature of the
+Linux kernel to retrieve and control processor features related to power saving,
+such as frequency and voltage scaling.")
+ (license license:gpl2)))