** Description changed:
Binary package hint: blas
On architectures with internal floating point precision higher than that
of the varibles (such as 68000, x86) files src/icamax.f and src/izamax.f
must necessarily be compiled with -ffloat-store option. Otherwise the
corresponding functions do not perform to their specification and the
corresponding blas level 1 tests fail. This, in particular, prevents
atlas-3.6.0-21.1ubuntu2 from building on i386.
It is, of course, an overkill to enable -ffloat-store for the whole
BLAS, but enabling it only for two said files works well and the impact
on performance is negligible.
This can be acomplished by the following changes to debian/rules
BOBJ:=$(BSRC:.f=.o)
+BOBJ1:=$(filter-out src/izamax.o,$(filter-out src/icamax.o,$(BOBJ)))
+BOBJ2:=src/icamax.o src/izamax.o
....
debian/shared_dir debian/static_dir debian/test_dir:
mkdir -p $(subst _dir,,$(@))
touch $@
!$(subst src/,debian/static/,$(BOBJ1)): \
debian/static/%.o : src/%.f debian/static_dir debian/patch_applied
$(F77) $(F77FLAGS) -c $< -o $@
+$(subst src/,debian/static/,$(BOBJ2)): \
+ debian/static/%.o : src/%.f debian/static_dir +debian/patch_applied
+
+ $(F77) $(F77FLAGS) -ffloat-store -c $< -o $@
The resulting library passes all of the BLAS test suite. This also fixes
atlas-3.6.0-21.1ubuntu2 build problem.
+
+ TEST CASE:
+ 1) grab the atlas 3.6.0-21.1ubuntu2 source package from
<https://launchpad.net/ubuntu/hardy/+source/atlas/3.6.0-21.1ubuntu2>.
+ 2) try to build it on hardy/i386
+ 3) install the blas packages from hardy-proposed
+ 4) try to build it again
--
ICAMAX/IZAMAX tests
https://bugs.launchpad.net/bugs/202869
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