Trac #22100: Openblas testsuite fails on OSX

Fails with
{{{
gfortran -m128bit-long-double -Wall -m64  -L/Users/buildslave-
sage/slave/sage_git/build/local/lib -Wl,-rpath,/Users/buildslave-
sage/slave/sage_git/build/local/lib  -o dblat2 dblat2.o
../libopenblas_sandybridgep-r0.2.19.a -lpthread -lgfortran -lpthread
-lgfortran
ld: file too small (length=0) file
'../libopenblas_sandybridgep-r0.2.19.a' for architecture x86_64
collect2: error: ld returned 1 exit status
gfortran -m128bit-long-double -Wall -m64  -L/Users/buildslave-
sage/slave/sage_git/build/local/lib -Wl,-rpath,/Users/buildslave-
sage/slave/sage_git/build/local/lib  -o cblat2 cblat2.o
../libopenblas_sandybridgep-r0.2.19.a -lpthread -lgfortran -lpthread
-lgfortran
make[4]: *** [sblat1] Error 1
}}}

URL: https://trac.sagemath.org/22100
Reported by: vbraun
Ticket author(s): François Bissey
Reviewer(s): Volker Braun

build/pkgs/openblas/spkg-check

@@ -15,6 +15,9 @@ cd src
 # We could also patch the Makefile to use a generic symlink pointing
 # to the archive with a specific name
 
+# See #22021 for issues with multithreading
+OPENBLAS_CONFIGURE="$OPENBLAS_CONFIGURE USE_THREAD=0"
+
 if [ `python -c "from __future__ import print_function; import platform; print(platform.architecture()[0])"` = "32bit" ]; then
     OPENBLAS_CONFIGURE="$OPENBLAS_CONFIGURE BINARY=32"
 fi

build/pkgs/openblas/spkg-install

@@ -30,7 +30,7 @@ fi
 
 echo "Building OpenBLAS: $MAKE $OPENBLAS_CONFIGURE"
 
-$MAKE $OPENBLAS_CONFIGURE
+$MAKE libs netlib shared $OPENBLAS_CONFIGURE
 if [ $? -ne 0 ]; then
     echo >&2 "Error building OpenBLAS"
     exit 1