[libvigraimpex] 01/01: deb/rules: set ffloat-store for i386 CPUs

[Daniel Stender]

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stender pushed a commit to branch master
in repository libvigraimpex.

commit 03275a58181aebe6c81bf5b871fec8465fafe1de
Author: Daniel Stender <stender at debian.org>
Date:   Mon Apr 18 17:38:22 2016 +0200

    deb/rules: set ffloat-store for i386 CPUs
---
 debian/changelog |  7 +++++++
 debian/rules     | 11 ++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/debian/changelog b/debian/changelog
index 72029cf..b911609 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+libvigraimpex (1.10.0+git20160211.167be93+dfsg-2) unstable; urgency=medium
+
+  * deb/rules: set ffloat-store for i386 CPUs (Closes: #820429)
+    [thanks to Tobias Frost].
+
+ -- Daniel Stender <stender at debian.org>  Mon, 18 Apr 2016 17:37:49 +0200
+
 libvigraimpex (1.10.0+git20160211.167be93+dfsg-1) unstable; urgency=medium
 
   * Stripped non-free "lenna" images from source tarball (Closes: #794853):
diff --git a/debian/rules b/debian/rules
index ea49795..8a74b54 100755
--- a/debian/rules
+++ b/debian/rules
@@ -6,17 +6,18 @@ CFLAGS := $(shell env DEB_CFLAGS_MAINT_APPEND=-pipe dpkg-buildflags --get CFLAGS
 CXXFLAGS := $(shell env DEB_CXXFLAGS_MAINT_APPEND=-pipe dpkg-buildflags --get CXXFLAGS; dpkg-buildflags --get CPPFLAGS)
 LDFLAGS := $(shell env DEB_LDFLAGS_MAINT_APPEND='-Wl,--as-needed -Wl,-z,now' dpkg-buildflags --get LDFLAGS)
 
-ifeq ($(DEB_HOST_ARCH),i386)
-  CFLAGS += -ffloat-store
-  CXXFLAGS += -ffloat-store
-endif
-
 # support for Ubuntu development
 ifeq ($(DEB_HOST_ARCH),ppc64el)
   CFLAGS := $(subst -O3,-O2,$(CFLAGS))
   CXXFLAGS := $(subst -O3,-O2,$(CXXFLAGS))
 endif
 
+# fixing floating-point rounding errors on i386 CPUs, see #820429
+ifneq (,$(filter $(DEB_HOST_ARCH_CPU), i386))
+  CFLAGS += -ffloat-store
+  CXXFLAGS += -ffloat-store
+endif
+
 # build with Boost.Thread on armel, see #814606
 ifeq ($(DEB_HOST_ARCH),armel)
   CMAKE_EXTRAS := -DWITH_BOOST_THREAD=1

-- 
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