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name: patches/clamav-system-tomsfastmath.patch 	 # note: path name is non-authoritative(*)

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From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Sun, 24 Feb 2019 15:50:37 +0100
Subject: gnu: clamav: Add support for system tomsfastmath.

Adjusted from the original for clamav 0.101.1:

From 756ff89526b5ffaa7a4f49b1bbecf2ecbd6f85f9 Mon Sep 17 00:00:00 2001
From: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Date: Wed, 11 Mar 2015 20:03:15 +0100
Subject: add support for system tomsfastmath

Patch-Name: add-support-for-system-tomsfastmath.patch
---
 configure.ac                           |    2 ++
 libclamav/Makefile.am                  |   10 ++++++++--
 libclamav/bignum.h                     |    6 +++++-
 libclamav/xdp.c                        |    2 +-
 m4/reorganization/libs/tomsfastmath.m4 |   12 ++++++++++++
 5 files changed, 28 insertions(+), 4 deletions(-)
 create mode 100644 m4/reorganization/libs/tomsfastmath.m4

--- a/configure.ac	1970-01-01 01:00:00.000000000 +0100
+++ b/configure.ac	2019-02-24 15:47:14.076992864 +0100
@@ -89,6 +89,7 @@
 m4_include([m4/reorganization/libs/json.m4])
 m4_include([m4/reorganization/libs/pcre.m4])
 m4_include([m4/reorganization/libs/libmspack.m4])
+m4_include([m4/reorganization/libs/tomsfastmath.m4])
 
 if test "x$use_internal_mspack" = "xno"; then
     mspack_msg="External, $LIBMSPACK_CFLAGS $LIBMSPACK_LIBS"
@@ -297,6 +298,7 @@
 fi
 CL_MSG_STATUS([yara        ],[$enable_yara],[$enable_yara])
 CL_MSG_STATUS([fts         ],[yes],[$lfs_fts_msg])
+CL_MSG_STATUS([tomsfastmath],[yes],[$tomsfastmath_msg])
 
 
 # Yep, downgrading the compiler avoids the bug too:
diff -Naur clamav-0.101.1/libclamav/bignum.h clamav-0.101.1b/libclamav/bignum.h
--- a/libclamav/bignum.h	1970-01-01 01:00:00.000000000 +0100
+++ b/libclamav/bignum.h	2019-02-24 15:46:36.216998323 +0100
@@ -1,9 +1,13 @@
 #ifndef BIGNUM_H_
 #define BIGNUM_H_
 
+#if HAVE_SYSTEM_TOMSFASTMATH
+#include <tfm.h>
+#else
 #define TFM_CHECK
-
 #include "bignum_fast.h"
+#endif
+
 typedef fp_int mp_int;
 #define mp_cmp fp_cmp
 #define mp_toradix_n(a,b,c,d) fp_toradix_n(a,b,c,d)
diff -Naur clamav-0.101.1/libclamav/Makefile.am clamav-0.101.1b/libclamav/Makefile.am
--- a/libclamav/Makefile.am	1970-01-01 01:00:00.000000000 +0100
+++ b/libclamav/Makefile.am	2019-02-24 15:46:36.216998323 +0100
@@ -597,8 +597,10 @@
 	yara_clam.h
 endif
 
-libclamav_la_SOURCES += bignum.h\
-	bignum_fast.h\
+libclamav_la_SOURCES += bignum.h
+
+if !SYSTEM_TOMSFASTMATH
+libclamav_la_SOURCES += bignum_fast.h\
         tomsfastmath/addsub/fp_add.c\
         tomsfastmath/addsub/fp_add_d.c\
         tomsfastmath/addsub/fp_addmod.c\
@@ -680,6 +682,10 @@
         tomsfastmath/sqr/fp_sqr_comba_generic.c\
         tomsfastmath/sqr/fp_sqr_comba_small_set.c\
 	tomsfastmath/sqr/fp_sqrmod.c
+else
+libclamav_la_CFLAGS += $(TOMSFASTMATH_CFLAGS)
+libclamav_la_LIBADD += $(TOMSFASTMATH_LIBS)
+endif
 
 .PHONY: version.h.tmp
 version.c: version.h
diff -Naur clamav-0.101.1/libclamav/xdp.c clamav-0.101.1b/libclamav/xdp.c
--- a/libclamav/xdp.c	1970-01-01 01:00:00.000000000 +0100
+++ b/libclamav/xdp.c	2019-02-24 15:46:36.216998323 +0100
@@ -52,7 +52,7 @@
 #include "scanners.h"
 #include "conv.h"
 #include "xdp.h"
-#include "bignum_fast.h"
+#include "bignum.h"
 #include "filetypes.h"
 
 static char *dump_xdp(cli_ctx *ctx, const char *start, size_t sz);
diff -Naur clamav-0.101.1/m4/reorganization/libs/tomsfastmath.m4 clamav-0.101.1b/m4/reorganization/libs/tomsfastmath.m4
--- a/m4/reorganization/libs/tomsfastmath.m4	1970-01-01 01:00:00.000000000 +0100
+++ b/m4/reorganization/libs/tomsfastmath.m4	2019-02-24 15:46:36.216998323 +0100
@@ -0,0 +1,12 @@
+dnl Check for system tomsfastmath
+PKG_CHECK_MODULES([TOMSFASTMATH], [tomsfastmath], [have_system_tomsfastmath=yes], [have_system_tomsfastmath=no])
+
+AM_CONDITIONAL([SYSTEM_TOMSFASTMATH], [test "x$have_system_tomsfastmath" = "xyes"])
+
+if test "x$have_system_tomsfastmath" = "xyes"; then
+    AC_DEFINE([HAVE_SYSTEM_TOMSFASTMATH], [1], [link against system-wide tomsfastmath library])
+    tomsfastmath_msg="External, $TOMSFASTMATH_CFLAGS $TOMSFASTMATH_LIBS"
+else
+    AC_DEFINE([HAVE_SYSTEM_TOMSFASTMATH], [0], [don't link against system-wide tomsfastmath library])
+    tomsfastmath_msg="Internal"
+fi

debug log:

solving 2153723a763d7fed2dcedbf3ab011ee20b9fe364 ...
found 2153723a763d7fed2dcedbf3ab011ee20b9fe364 in https://git.savannah.gnu.org/cgit/guix.git

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