In the current state of sage starting from scratch with clang/clang++
via
CC=clang CXX=clang++ make
will trigger the building of sage’s gcc (which is OK on OS X since
you still need gfortran).
The problem is that once you build sage’s gcc, there is a clause
in src/bin/sage-env to use sage’s gcc/g++/gfrotran if it is present
in SAGE_LOCAL/bin:
# Override CC, CPP, CXX, FC if the GCC spkg was installed.
if [ -x "$SAGE_LOCAL/bin/gcc" ]; then
CC=gcc
fi
if [ -x "$SAGE_LOCAL/bin/cpp" ]; then
CPP=cpp
fi
if [ -x "$SAGE_LOCAL/bin/g++" ]; then
CXX=g++
fi
if [ -x "$SAGE_LOCAL/bin/gfortran" ]; then
FC=gfortran
fi
export CC CPP CXX FC
So working on OS X I dirty patched sage-env:
@@ -511,15 +515,15 @@ if [ "$UNAME" = "Darwin" ]; then
fi
# Override CC, CPP, CXX, FC if the GCC spkg was installed.
-if [ -x "$SAGE_LOCAL/bin/gcc" ]; then
- CC=gcc
-fi
-if [ -x "$SAGE_LOCAL/bin/cpp" ]; then
- CPP=cpp
-fi
-if [ -x "$SAGE_LOCAL/bin/g++" ]; then
- CXX=g++
-fi
+#if [ -x "$SAGE_LOCAL/bin/gcc" ]; then
+# CC=gcc
+#fi
+#if [ -x "$SAGE_LOCAL/bin/cpp" ]; then
+# CPP=cpp
+#fi
+#if [ -x "$SAGE_LOCAL/bin/g++" ]; then
+# CXX=g++
+#fi
if [ -x "$SAGE_LOCAL/bin/gfortran" ]; then
FC=gfortran
fi
So with that patch on OS X and starting with
CC=clang CXX=clang++ make
gcc will be built but clang/clang++/gfortran will be used.
Something a little bit less dirty should be done once
we are more advanced.
But at the moment compiling sagelib seems to point to a variety
of problems from numpy to cython and probably other…
François
> On 3/10/2016, at 21:43, Dima Pasechnik <dimp...@gmail.com> wrote:
>
> What exactly should be set to start the Sage build using clang rather than
> gcc?
>
>
> On Monday, October 3, 2016 at 6:32:45 AM UTC, François wrote:
>
> > On 3/10/2016, at 09:33, François Bissey <francoi...@canterbury.ac.nz>
> > wrote:
> >
> >> linbox
> >
> > No news from upstream at
> > https://github.com/linbox-team/linbox/issues/39
> > contributions welome.
>
> Well as it turns out the problem is only in the interface with
> fplll which we are going to disable in the next fplll upgrade.
> Word from upstream is that this particular interface is not
> currently used by sage so it is all right to disable it.
>
> With fplll disabled in linbox all the standard packages are
> now successfully building and installing with clang.
>
> The next challenge is sagelib itself:
> [sagelib-7.4.beta6] [ 1/387] clang -fno-strict-aliasing
> -I/Users/fbissey/build/sage/local/var/tmp/sage/build/python2-2.7.10.p2/include
> -DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused
> -I/Users/fbissey/build/sage/local/lib/python2.7/site-packages/cysignals
> -I/Users/fbissey/build/sage/local/include
> -I/Users/fbissey/build/sage/local/include/python2.7
> -I/Users/fbissey/build/sage/local/lib/python2.7/site-packages/numpy/core/include
> -I/Users/fbissey/build/sage/src -I/Users/fbissey/build/sage/src/sage/ext
> -I/Users/fbissey/build/sage/src/build/cythonized
> -I/Users/fbissey/build/sage/src/build/cythonized/sage/ext
> -I/Users/fbissey/build/sage/local/include/python2.7 -c
> /Users/fbissey/build/sage/src/build/cythonized/sage/finance/time_series.c -o
> build/temp.macosx-10.9-x86_64-2.7/Users/fbissey/build/sage/src/build/cythonized/sage/finance/time_series.o
> -fno-strict-aliasing
> [sagelib-7.4.beta6] In file included from
> /Users/fbissey/build/sage/src/build/cythonized/sage/finance/time_series.c:317:
>
> [sagelib-7.4.beta6] In file included from
> /Users/fbissey/build/sage/local/lib/python2.7/site-packages/numpy/core/include/numpy/arrayobject.h:4:
>
> [sagelib-7.4.beta6] In file included from
> /Users/fbissey/build/sage/local/lib/python2.7/site-packages/numpy/core/include/numpy/ndarrayobject.h:18:
>
> [sagelib-7.4.beta6] In file included from
> /Users/fbissey/build/sage/local/lib/python2.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1777:
>
> [sagelib-7.4.beta6]
> /Users/fbissey/build/sage/local/lib/python2.7/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2:
> warning: "Using deprecated NumPy API, disable it by " "#defining
> NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-W#warnings]
> [sagelib-7.4.beta6] #warning "Using deprecated NumPy API, disable it by " \
> [sagelib-7.4.beta6] ^
> [sagelib-7.4.beta6]
> /Users/fbissey/build/sage/src/build/cythonized/sage/finance/time_series.c:15275:3:
> error: non-void function
> '__pyx_pf_4sage_7finance_11time_series_10TimeSeries_106numpy' should return a
> value [-Wreturn-type]
> [sagelib-7.4.beta6] import_array();
> [sagelib-7.4.beta6] ^
> [sagelib-7.4.beta6]
> /Users/fbissey/build/sage/local/lib/python2.7/site-packages/numpy/core/include/numpy/__multiarray_api.h:1532:144:
> note: expanded from macro 'import_array'
> [sagelib-7.4.beta6] #define import_array() {if (_import_array() < 0)
> {PyErr_Print(); PyErr_SetString(PyExc_ImportError, "numpy.core.multiarray
> failed to import"); return NUMPY_IMPORT_ARRAY_RETVAL; } }
> [sagelib-7.4.beta6]
>
> ^
> [sagelib-7.4.beta6] 1 warning and 1 error generated.
>
> François
>
>
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