gnu: Add minisat.

* gnu/packages/patches/minisat-friend-declaration.patch: New file.
* gnu/packages/patches/minisat-install.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add both files above.
* gnu/packages/maths.scm (minisat): New exported variable.

Signed-off-by: Mathieu Othacehe <m.othacehe@gmail.com>

gnu/local.mk

@@ -1131,6 +1131,8 @@ dist_patch_DATA =						\
   %D%/packages/patches/metabat-fix-compilation.patch		\
   %D%/packages/patches/mhash-keygen-test-segfault.patch		\
   %D%/packages/patches/mingw-w64-6.0.0-gcc.patch		\
+  %D%/packages/patches/minisat-friend-declaration.patch		\
+  %D%/packages/patches/minisat-install.patch			\
   %D%/packages/patches/mpc123-initialize-ao.patch		\
   %D%/packages/patches/module-init-tools-moduledir.patch	\
   %D%/packages/patches/monero-use-system-miniupnpc.patch			\

gnu/packages/maths.scm

@@ -32,6 +32,7 @@
 ;;; Copyright © 2018 Amin Bandali <bandali@gnu.org>
 ;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2019 Steve Sprang <scs@stevesprang.com>
+;;; Copyright © 2019 Robert Smith <robertsmith@posteo.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -5242,3 +5243,42 @@ fields of knowledge.")
     (home-page "http://speedcrunch.org/")
     (license license:gpl2+)))
 
+(define-public minisat
+  ;; This is the last commit which is available upstream, no
+  ;; release happened since 2010.
+  (let ((commit "37dc6c67e2af26379d88ce349eb9c4c6160e8543")
+        (revision "1"))
+    (package
+      (name "minisat")
+      (version (string-append "2.2.0-" revision "." (string-take commit 7)))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/niklasso/minisat.git")
+               (commit commit)))
+         (file-name (string-append name "-" version "-checkout"))
+         (sha256
+          (base32
+           "091hf3qkm197s5r7xcr3m07xsdwyz2rqk1hc9kj0hn13imz09irq"))
+         (patches
+          (search-patches "minisat-friend-declaration.patch"
+                          "minisat-install.patch"))))
+      (build-system gnu-build-system)
+      (arguments
+       '(#:make-flags (list (string-append "prefix=" %output))
+         #:tests? #f ;no check target
+         #:phases
+         (modify-phases %standard-phases
+           (delete 'configure))))
+      (inputs
+       `(("zlib:static" ,zlib "static")
+         ("zlib" ,zlib)))
+      (synopsis
+       "Small, yet efficient, SAT solver")
+      (description
+       "MiniSat is a minimalistic, open-source SAT solver, developed to help
+researchers and developers alike to get started on SAT.")
+      (home-page
+       "http://minisat.se/MiniSat.html")
+      (license license:expat))))

gnu/packages/patches/minisat-friend-declaration.patch

@@ -0,0 +1,25 @@
+See https://groups.google.com/forum/#!topic/minisat/FCocZsC8oMQ
+This seems to only be a problem with newer versions of g++, and
+upstream development seems to have stopped in 2013.
+
+diff -rupN minisat-2.2.0/core/SolverTypes.h minisat-2.2.0.patched/core/SolverTypes.h
+--- a/minisat/core/SolverTypes.h	2010-07-10 17:07:36.000000000 +0100
++++ b/minisat/core/SolverTypes.h	2014-03-29 11:57:49.000000000 +0000
+@@ -47,7 +47,7 @@ struct Lit {
+     int     x;
+
+     // Use this as a constructor:
+-    friend Lit mkLit(Var var, bool sign = false);
++    //friend Lit mkLit(Var var, bool sign = false);
+
+     bool operator == (Lit p) const { return x == p.x; }
+     bool operator != (Lit p) const { return x != p.x; }
+@@ -55,7 +55,7 @@ struct Lit {
+ };
+
+
+-inline  Lit  mkLit     (Var var, bool sign) { Lit p; p.x = var + var + (int)sign; return p; }
++inline  Lit  mkLit     (Var var, bool sign = false) { Lit p; p.x = var + var + (int)sign; return p; }
+ inline  Lit  operator ~(Lit p)              { Lit q; q.x = p.x ^ 1; return q; }
+ inline  Lit  operator ^(Lit p, bool b)      { Lit q; q.x = p.x ^ (unsigned int)b; return q; }
+ inline  bool sign      (Lit p)              { return p.x & 1; }

gnu/packages/patches/minisat-install.patch

@@ -0,0 +1,19 @@
+Avoid the default dynamic executable, which depends on minisat.so
+Instead install the release version, which is statically linked.
+
+diff --git a/Makefile b/Makefile
+index ceb9d77..7b91906 100644
+--- a/Makefile
++++ b/Makefile
+@@ -191,9 +191,9 @@ install-lib: $(BUILD_DIR)/release/lib/$(MINISAT_SLIB) $(BUILD_DIR)/dynamic/lib/$
+ 	ln -sf $(MINISAT_DLIB).$(SOMAJOR) $(DESTDIR)$(libdir)/$(MINISAT_DLIB)
+ 	$(INSTALL) -m 644 $(BUILD_DIR)/release/lib/$(MINISAT_SLIB) $(DESTDIR)$(libdir)
+ 
+-install-bin: $(BUILD_DIR)/dynamic/bin/$(MINISAT)
++install-bin: $(BUILD_DIR)/release/bin/$(MINISAT)
+ 	$(INSTALL) -d $(DESTDIR)$(bindir)
+-	$(INSTALL) -m 755 $(BUILD_DIR)/dynamic/bin/$(MINISAT) $(DESTDIR)$(bindir)
++	$(INSTALL) -m 755 $(BUILD_DIR)/release/bin/$(MINISAT) $(DESTDIR)$(bindir)
+ 
+ clean:
+ 	rm -f $(foreach t, release debug profile dynamic, $(foreach o, $(SRCS:.cc=.o), $(BUILD_DIR)/$t/$o)) \