(windows) make check fails on spmatrix

[SorenJ89]

In windows with MSYS2+minGW64 and running make -i check results in the following failure:

make[1]: Entering directory '/home/Soren/gsl/spmatrix'
make  test.exe
make[2]: Entering directory '/home/Soren/gsl/spmatrix'
gcc -DHAVE_CONFIG_H -I. -I..  -I..   -g -O2 -MT test.o -MD -MP -MF .deps/test.Tpo -c -o test.o test.c
mv -f .deps/test.Tpo .deps/test.Po
/bin/sh ../libtool  --tag=CC   --mode=link gcc  -g -O2   -o test.exe test.o libgslspmatrix.la ../bst/libgslbst.la ../test/libgsltest.la ../matrix/libgslmatrix.la ../vector/libgslvector.la ../blas/libgslblas.la ../cblas/libgslcblas.la ../block/libgslblock.la  ../sys/libgslsys.la ../err/libgslerr.la ../utils/libutils.la ../rng/libgslrng.la -lm
libtool: link: gcc -g -O2 -o .libs/test.exe test.o  ./.libs/libgslspmatrix.a ../bst/.libs/libgslbst.a ../test/.libs/libgsltest.a ../matrix/.libs/libgslmatrix.a ../vector/.libs/libgslvector.a ../blas/.libs/libgslblas.a ../cblas/.libs/libgslcblas.dll.a ../block/.libs/libgslblock.a ../sys/.libs/libgslsys.a ../err/.libs/libgslerr.a ../utils/.libs/libutils.a ../rng/.libs/libgslrng.a -L/mingw64/lib
make[2]: Leaving directory '/home/Soren/gsl/spmatrix'
make  check-TESTS
make[2]: Entering directory '/home/Soren/gsl/spmatrix'
make[3]: Entering directory '/home/Soren/gsl/spmatrix'
FAIL: test.exe
make[4]: Entering directory '/home/Soren/gsl/spmatrix'
make[4]: Nothing to be done for 'all'.
make[4]: Leaving directory '/home/Soren/gsl/spmatrix'
============================================================================
Testsuite summary for gsl 2.6
============================================================================
# TOTAL: 1
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0
============================================================================
See spmatrix/test-suite.log
============================================================================
make[3]: [Makefile:728: test-suite.log] Error 1 (ignored)
make[3]: Leaving directory '/home/Soren/gsl/spmatrix'
make[2]: Leaving directory '/home/Soren/gsl/spmatrix'
make[1]: Leaving directory '/home/Soren/gsl/spmatrix'
Making check in splinalg
make[1]: Entering directory '/home/Soren/gsl/splinalg'
make  test.exe
make[2]: Entering directory '/home/Soren/gsl/splinalg'

The contents of test-suite.log is:

======================================
   gsl 2.6: spmatrix/test-suite.log
======================================

# TOTAL: 1
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: test
==========

FAIL: gsl_spmatrix_long_double_fscanf[53,107](COO) [289]
FAIL: gsl_spmatrix_long_double_fscanf[53,107](CSC) [290]
FAIL: gsl_spmatrix_long_double_fscanf[53,107](CSR) [291]
FAIL: gsl_spmatrix_complex_long_double_fscanf[53,107](COO) [1313]
FAIL: gsl_spmatrix_complex_long_double_fscanf[53,107](CSC) [1314]
FAIL: gsl_spmatrix_complex_long_double_fscanf[53,107](CSR) [1315]
FAIL: gsl_spmatrix_long_double_fscanf[40,20](COO) [1607]
FAIL: gsl_spmatrix_long_double_fscanf[40,20](CSC) [1608]
FAIL: gsl_spmatrix_long_double_fscanf[40,20](CSR) [1609]
FAIL: gsl_spmatrix_complex_long_double_fscanf[40,20](COO) [2631]
FAIL: gsl_spmatrix_complex_long_double_fscanf[40,20](CSC) [2632]
FAIL: gsl_spmatrix_complex_long_double_fscanf[40,20](CSR) [2633]
FAIL: gsl_spmatrix_long_double_fscanf[30,30](COO) [2925]
FAIL: gsl_spmatrix_long_double_fscanf[30,30](CSC) [2926]
FAIL: gsl_spmatrix_long_double_fscanf[30,30](CSR) [2927]
FAIL: gsl_spmatrix_complex_long_double_fscanf[30,30](COO) [3949]
FAIL: gsl_spmatrix_complex_long_double_fscanf[30,30](CSC) [3950]
FAIL: gsl_spmatrix_complex_long_double_fscanf[30,30](CSR) [3951]

The rest of the make runs fine, spmatrix is the only point of failure.