[gnumeric] Python: get "-lpython3.x" directly from python.

[Morten Welinder <mortenw src gnome org>]

commit 7378c1da907384b1d18ffe6f74f693e483f96df0
Author: Morten Welinder <terra gnome org>
Date:   Sat May 8 11:57:47 2021 -0400

    Python: get "-lpython3.x" directly from python.
    
    The downside is that cross compilation will need work if it is ever
    needed again.

 configure.ac | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0d44bf847..1abc5d00b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -900,17 +900,13 @@ AM_CONDITIONAL(HAVE_PYTHON_GI, test "x$have_python_gi" = "xyes")
 
 
 if test "x$python_msg" = xyes; then
-    BIG_CHECKING([for python = 3.x])
-    [PY_VERSION=`$PYTHON -c 'import sys; sys.stdout.write("{:d}.{:d}".format(*sys.version_info))'`
-     major_ver=`$PYTHON -c 'import sys ; sys.stdout.write(str(sys.version_info[0]))'`]
-    if test "x$major_ver" = "x3"; then
+    BIG_CHECKING([for python >= 3.x])
+    [major_ver=`$PYTHON -c 'import sys ; sys.stdout.write(str(sys.version_info[0]))'`]
+    if test "$major_ver" -ge 3; then
        AC_MSG_RESULT(yes)
-       if test "x$with_native_win32" = xyes ; then
-           # 3.x on linux, 3x on win32
-           PY_VERSION=`echo $PY_VERSION | sed -e 's/\\.//'`
-       fi
     else
-       AC_MSG_RESULT([no. $PYTHON is version $PY_VERSION])
+        pyversion=`$PYTHON --version`
+       AC_MSG_RESULT([no. $PYTHON is $pyversion])
     fi
 fi
 
@@ -953,13 +949,15 @@ if test "x$python_msg" = xyes; then
     if test "x$PY_LIB_DIR" = x; then
        if test "x$with_native_win32" = xyes ; then
            PY_LIB_DIR="$PY_PREFIX/libs"
+           PY_DASHLPYTHON=FIXME
        else
            PY_LIB_DIR=`$PYTHON -c 'import sys ; import distutils.sysconfig ; 
sys.stdout.write(distutils.sysconfig.get_config_var("LIBPL"))'`
+           PY_DASHLPYTHON=`$PYTHON -c 'import sys ; import distutils.sysconfig ; 
sys.stdout.write(distutils.sysconfig.get_config_var("BLDLIBRARY"))'`
        fi
     fi
 
     GNM_PY_CFLAGS="$PY_INCLUDES $PYGOBJECT_CFLAGS"
-    GNM_PY_LDFLAGS="-L$PY_LIB_DIR -lpython$PY_VERSION $PYGOBJECT_LIBS"
+    GNM_PY_LDFLAGS="-L$PY_LIB_DIR $PY_DASHLPYTHON $PYGOBJECT_LIBS"
     python_msg="yes (using $PYTHON)"
 elif test "x$with_python" = "xyes"; then
                AC_MSG_ERROR([$python_msg])