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(define-module (gn packages virtualization)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix gexp)
#:use-module (guix utils)
#:use-module (guix packages)
#:use-module (guix download)
#:use-module (guix git-download)
#:use-module (guix build-system python)
#:use-module (guix build-system scons)
#:use-module (gnu packages)
#:use-module (gnu packages boost)
#:use-module (gnu packages compression)
#:use-module (gnu packages cpp)
#:use-module (gnu packages graphviz)
#:use-module (gnu packages image)
#:use-module (gnu packages m4)
#:use-module (gnu packages pkg-config)
#:use-module (gnu packages protobuf)
#:use-module (gnu packages python)
#:use-module (gnu packages python-xyz))
(define-public gem5
(package
(name "gem5")
(version "21.2.1.0")
(source
(origin
(method git-fetch)
(uri (git-reference
(url "https://gem5.googlesource.com/public/gem5")
(commit (string-append "v" version))))
(file-name (git-file-name name version))
(sha256
(base32 "0wyns8cfkigzw3m21331m8ydc7akm8l2lp0kci4pq8jyzsanmjm3"))
(snippet
#~(begin
(use-modules (guix build utils))
;; For reproducibility.
(substitute* "src/base/date.cc"
(("__DATE__") "\"1970-01-01\"")
(("__TIME__") "\"00:00:00\""))))))
(build-system scons-build-system)
(arguments
`(#:scons-flags
(list "--verbose")
#:tests? #f ; TODO: How to run test suite?
#:build-targets '("build/ARM/gem5.opt"
"build/MIPS/gem5.opt"
"build/NULL/gem5.opt"
"build/POWER/gem5.opt"
"build/RISCV/gem5.opt"
"build/SPARC/gem5.opt"
"build/X86/gem5.opt")
#:phases
(modify-phases %standard-phases
(add-after 'unpack 'patch-source
(lambda* (#:key inputs #:allow-other-keys)
(substitute* "SConstruct"
;; Scons does not use the environment variables by default,
;; but this substitution makes it do so.
;(("main = Environment")
; "main = Environment(ENV=os.environ)\nmain = Environment")
;; Force adding missing includes into the environment.
(("main\\.Append\\(CPPPATH=\\[Dir\\('" all)
(string-append
all (assoc-ref inputs "kernel-headers") "/include')])\n"
all (assoc-ref inputs "libpng") "/include')])\n"
all (assoc-ref inputs "zlib") "/include')])\n"
all)))
(substitute* "ext/libelf/SConscript"
(("m4env\\.Tool" all)
(string-append
"m4env.Append(CPPPATH=[Dir('"
(assoc-ref inputs "kernel-headers")
"/include')])\n"
all)))
(substitute* "ext/libelf/native-elf-format"
(("cc") ,(cc-for-target)))))
(replace 'check
(lambda* (#:key tests? #:allow-other-keys)
(when tests?
(invoke "python3" "tests/run.py"))))
(replace 'install
(lambda* (#:key outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out"))
(bin (string-append out "/bin/")))
(mkdir-p bin)
(for-each
(lambda (arch)
(when (directory-exists?
(string-append "build/" (string-upcase arch)))
(copy-file
(string-append "build/" (string-upcase arch) "/gem5.opt")
(string-append bin "gem5-" arch ".opt"))
(copy-file
(string-append "build/" (string-upcase arch) "/gem5py")
(string-append bin "gem5py-" arch))
(copy-file
(string-append "build/" (string-upcase arch) "/gem5py_m5")
(string-append bin "gem5py_m5-" arch))))
(list "arm" "mips" "null" "power" "riscv" "sparc" "x86"))))))))
(inputs
(list gperftools
libpng
protobuf
python
python-pydot
python-six
zlib))
(native-inputs
(list boost
m4
pkg-config))
(home-page "http://gem5.org/")
(synopsis "Modular platform for computer-system architecture research")
(description "The gem5 simulator is a modular platform for computer-system
architecture research, encompassing system-level architecture as well as
processor microarchitecture.")
(license license:bsd-2)))
(define-public gem5-riscv
(package
(inherit gem5)
(name "gem5-riscv")
(arguments
(substitute-keyword-arguments (package-arguments gem5)
((#:build-targets _)
`(list "build/RISCV/gem5.opt"))
((#:phases phases)
`(modify-phases ,phases
(replace 'install
(lambda* (#:key outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out"))
(bin (string-append out "/bin")))
(install-file "build/RISCV/gem5.opt" bin)
(install-file "build/RISCV/gem5py" bin)
(install-file "build/RISCV/gem5py_m5" bin))))))))))
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