make: Nothing to be done for 'all'.

testing c_version with CC='x86_64-w64-mingw32-gcc':
x86_64-w64-mingw32-gcc --version
x86_64-w64-mingw32-gcc (GCC) 7.3-win32 20180312
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


testing c_compile:
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -c -o conftest.o conftest.c \
     

testing c_link:
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -o conftest.exe conftest.c \
          -lm

testing c_link with CFLAGS='-O2 -fno-strict-aliasing':
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -o conftest.exe conftest.c \
     -O2 -fno-strict-aliasing      -lm

testing c_link with CFLAGS_FLOAT='-ffloat-store':
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -o conftest.exe conftest.c \
     -O2 -fno-strict-aliasing -ffloat-store     -lm

testing xc_version with XCC='gcc':
gcc --version
gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


testing xc_compile:
echo "$conftest_c" >conftest.c
gcc -c -o conftest.o conftest.c

testing xc_link:
echo "$conftest_c" >conftest.c
gcc -o conftest.exe conftest.c

testing xc_run:
echo "$conftest_c" >conftest.c
gcc -o conftest.exe conftest.c
./conftest.exe

testing f_compile:
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -c -o conftest.o conftest.f \
     

testing f_link:
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -o conftest.exe conftest.f \
          -lm

testing f_link with FFLAGS='-O2':
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -o conftest.exe conftest.f \
     -O2       -lm

testing f_link with FFLAGS_FLOAT='-ffloat-store':
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -o conftest.exe conftest.f \
     -O2 -ffloat-store      -lm

testing f_link with FFLAGS_THREAD='-frecursive':
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -o conftest.exe conftest.f \
     -O2 -ffloat-store -frecursive     -lm

testing xar_version with XAR='x86_64-w64-mingw32-ar':
x86_64-w64-mingw32-ar --version
GNU ar (GNU Binutils) 2.30
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.

testing c_and_f_link with FLAGS_BITS='-m64':
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -o conftest.exe conftest.c \
    -m64    -O2 -fno-strict-aliasing -ffloat-store     -lm
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -o conftest.exe conftest.f \
    -m64    -O2 -ffloat-store -frecursive     -lm

testing no_cygwin with FLAGS_WINDOWS='':
echo "$conftest_c" >conftest.c
echo "$conftest_def" >conftest.def
x86_64-w64-mingw32-dlltool -d conftest.def -l conftest.a
echo _f                          >conftest.symlist
echo "{ global: f; local: *; };" >conftest.mapfile
x86_64-w64-mingw32-gcc -Werror  -o conftest.dll conftest.c \
    -m64    -O2 -fno-strict-aliasing -ffloat-store     -lm  \
    conftest.a
ldd conftest.dll | \
    { ! grep -q '[[:space:]]cygwin[0-9]*[.]dll[[:space:]]'; }

testing c_and_f_link with FLAGS_PIPE='-pipe':
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -o conftest.exe conftest.c \
    -m64   -pipe -O2 -fno-strict-aliasing -ffloat-store     -lm
echo "$conftest_f" >conftest.f
gfortran-9 -Werror -o conftest.exe conftest.f \
    -m64   -pipe -O2 -ffloat-store -frecursive     -lm

testing dlltool:
echo "$conftest_def" >conftest.def
x86_64-w64-mingw32-dlltool -d conftest.def -l conftest.a

testing c_compile with FLAGS_PIC='-fPIC':
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Wimplicit -Werror -c -o conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store

testing shared_link with LD_SHARED='-shared':
echo "$conftest_c" >conftest.c
echo "$conftest_def" >conftest.def
x86_64-w64-mingw32-dlltool -d conftest.def -l conftest.a
echo _f                          >conftest.symlist
echo "{ global: f; local: *; };" >conftest.mapfile
x86_64-w64-mingw32-gcc -Werror -shared -o conftest.dll conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store     -lm  \
    conftest.a

testing shared_link with LDFLAGS_LIBGCC='-static-libgcc':
echo "$conftest_c" >conftest.c
echo "$conftest_def" >conftest.def
x86_64-w64-mingw32-dlltool -d conftest.def -l conftest.a
echo _f                          >conftest.symlist
echo "{ global: f; local: *; };" >conftest.mapfile
x86_64-w64-mingw32-gcc -Werror -shared -o conftest.dll conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -static-libgcc    -lm  \
    conftest.a

testing ld_export with LD_EXPORT='-Wl,--version-script':
echo "$conftest_c" >conftest.c
echo "$conftest_def" >conftest.def
x86_64-w64-mingw32-dlltool -d conftest.def -l conftest.a
echo _f                          >conftest.symlist
echo "{ global: f; local: *; };" >conftest.mapfile
x86_64-w64-mingw32-gcc -Werror -shared -o conftest.dll conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -static-libgcc    -lm -Wl,--version-script,conftest.mapfile \
    conftest.a

testing strip with STRIP_FLAGS='-s':
echo "$conftest_c" >conftest.c
echo "$conftest_def" >conftest.def
x86_64-w64-mingw32-dlltool -d conftest.def -l conftest.a
echo _f                          >conftest.symlist
echo "{ global: f; local: *; };" >conftest.mapfile
x86_64-w64-mingw32-gcc -Werror -shared -o conftest.dll conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -static-libgcc    -lm -Wl,--version-script,conftest.mapfile \
    conftest.a
x86_64-w64-mingw32-strip -s conftest.dll

testing ld_static with LD_STATIC='-Wl,-Bstatic':
echo "$conftest_c" >conftest.c
x86_64-w64-mingw32-gcc -Werror -shared -o conftest.dll conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc    -lm -Wl,-Bdynamic

testing f_compile_c_link with LIBS_FORTRAN='':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc    -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN='-lgfortran':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -lgfortran -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN='-lgfortanbegin -lgfortran':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -lgfortanbegin -lgfortran -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN='-lgfortran -lquadmath':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -lgfortran -lquadmath -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN='-lgfortanbegin -lgfortran -lquadmath':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -lgfortanbegin -lgfortran -lquadmath -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN=' -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortran':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortran -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN=' -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortanbegin -lgfortran':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortanbegin -lgfortran -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN=' -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortran -lquadmath':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortran -lquadmath -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed

testing f_compile_c_link with LIBS_FORTRAN=' -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortanbegin -lgfortran -lquadmath':
echo "$conftest_f" >conftest.f
echo "$conftest_c" >conftest.c
gfortran-9 -Werror -c -o conftest.o conftest.f \
    -m64  -fPIC -pipe -O2 -ffloat-store -frecursive
x86_64-w64-mingw32-gcc -Werror -o conftest.exe conftest.o conftest.c \
    -m64  -fPIC -pipe -O2 -fno-strict-aliasing -ffloat-store -Wl,-Bstatic -static-libgcc   -L/usr/lib/gcc/x86_64-linux-gnu/9 -lgfortanbegin -lgfortran -lquadmath -lm -Wl,-Bdynamic
mk/test.mk:124: recipe for target 'test/f_compile_c_link' failed