From 061c6b7fd399a304d0a0fc089f0020b4f9fa368c Mon Sep 17 00:00:00 2001
From: guy fleury iteriteka <address@hidden>
Date: Wed, 26 Dec 2018 09:39:23 +0100
Subject: [PATCH] gnu:Add flat assembler

---
 gnu/packages/assembly.scm | 56 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/assembly.scm b/gnu/packages/assembly.scm
index 763d183cf..34832bad2 100644
--- a/gnu/packages/assembly.scm
+++ b/gnu/packages/assembly.scm
@@ -30,7 +30,9 @@
   #:use-module (gnu packages perl)
   #:use-module (gnu packages texinfo)
   #:use-module (gnu packages python)
-  #:use-module (gnu packages xml))
+  #:use-module (gnu packages xml)
+  #:use-module ((guix utils)
+                #:select (%current-system)))
 
 (define-public nasm
   (package
@@ -122,3 +124,55 @@ abstracts over the target CPU by exposing a standardized RISC instruction set
 to the clients.")
     (home-page "https://www.gnu.org/software/lightning/")
     (license license:gpl3+)))
+
+(define-public fasm
+  (package
+    (name "fasm")
+    (version "1.73.04")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://flatassembler.net/fasm-"
+                           version ".tgz"))
+       (sha256
+        (base32
+         "0y0xkf9fzcm5gklhdi61wjpd1p8islpbcnkv5k16aqci3qsd0ia1"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (delete 'configure) ;;no configure script used
+         (replace 'build
+           (lambda _
+             ;;source code are in this directory
+             (chdir "source/Linux/")
+             (if (string=? ,(%current-system) "x86_64-linux") ;;if x86_86
+                 ;;use pre-binarie in /root directory to build itself
+                 (invoke "../../fasm.x64" "fasm.asm")
+
+                 (invoke "../../fasm" "fasm.asm")))) ;;the same with i686
+
+         (replace 'install
+           (lambda _
+             (let ((out (assoc-ref %outputs "out")))
+               (begin
+                 ;;delete pre-binaries
+                 ;;this make sure not copy them
+                 ;;instead of the one recentently build
+                 (for-each delete-file '("../../fasm" "../../fasm.x64"))
+                 (mkdir-p (string-append out "/bin"))
+                 ;;copy the excutable recentently build in /source/Linux/fasm
+                 ;;the excutable name is fasm
+                 (copy-file "fasm" (string-append out "/bin/fasm"))))))
+
+         (delete 'check)))) ;;no test
+    ;;support only intel x86 family processors
+    (supported-systems '("x86_64-linux" "i686-linux"))
+    (synopsis "Assembler for x86 processors")
+    (description
+     "FASM is a assembler that supports x86, and IA-64 Intel architectures.It
+does multiple passes to optimize machine code.It have macro abilities and focus on
+operating system portability.")
+    (home-page "https://flatassembler.net/")
+    (license license:bsd-2)))
+
-- 
2.19.2