[pygobject] testhelper: only link against libpython on Windows

[Christoph Reiter <creiter src gnome org>]

commit b0476e2db4577e12b52caa3163ccb69575221d6c
Author: Christoph Reiter <creiter src gnome org>
Date:   Thu Mar 23 22:32:23 2017 +0100

    testhelper: only link against libpython on Windows
    
    https://bugzilla.gnome.org/show_bug.cgi?id=773803

 configure.ac      |    6 +++---
 tests/Makefile.am |   11 ++++++++++-
 2 files changed, 13 insertions(+), 4 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index a28f75e..b8a811e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,7 +48,7 @@ AM_INIT_AUTOMAKE([1.13 foreign no-dist-gzip dist-xz])
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
-AC_MSG_CHECKING([for build time linking with Python (Darwin and Win32)])
+AC_MSG_CHECKING([for build time linking with Python (Win32)])
 case "$host" in
   *-*-mingw*|*-*-cygwin*)
     os_win32=yes
@@ -57,7 +57,7 @@ case "$host" in
     ;;
   *-*-darwin*)
     os_win32=no
-    link_python_libs=yes
+    link_python_libs=no
     OS_EXT=dylib
     ;;
   *)
@@ -116,7 +116,7 @@ AC_SUBST(PYTHON_SO)
 
 PYG_CHECK_PYTHON_HEADERS(, AC_MSG_ERROR([Python headers not found]))
 if test "x$link_python_libs" = "xyes"; then
-  PYG_CHECK_PYTHON_LIBS(, AC_MSG_ERROR([Python libs not found. Windows and Darwin require Python modules to 
be explicitly linked to libpython.]))
+  PYG_CHECK_PYTHON_LIBS(, AC_MSG_ERROR([Python libs not found. Windows requires Python modules to be 
explicitly linked to libpython.]))
 fi
 
 AC_MSG_CHECKING([for PySignal_SetWakeupFd in Python.h])
diff --git a/tests/Makefile.am b/tests/Makefile.am
index e7bcfb6..937650e 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -2,12 +2,21 @@ CLEANFILES =
 test_ltlibraries = libgimarshallingtests.la
 test_typelibs = GIMarshallingTests-1.0.typelib
 extension_ltlibraries =
+extension_libadd =
 
 common_ldflags = \
        -avoid-version \
        -rpath $(abs_builddir) \
        -shared
 
+if OS_WIN32
+extension_libadd += \
+       $(PYTHON_LIBS)
+
+common_ldflags += \
+       -no-undefined
+endif
+
 # Note for Python extensions we need to use .so on Mac OSX, not .dylib
 extension_ldflags = \
        $(common_ldflags) \
@@ -76,7 +85,7 @@ extension_ltlibraries += testhelper.la
 testhelper_la_CFLAGS = $(CODE_COVERAGE_CFLAGS) $(WARN_CFLAGS) -I$(top_srcdir)/gi $(PYTHON_INCLUDES) 
$(GLIB_CFLAGS)
 testhelper_la_CPPFLAGS = $(CODE_COVERAGE_CPPFLAGS)
 testhelper_la_LDFLAGS = $(WARN_LDFLAGS) $(extension_ldflags)
-testhelper_la_LIBADD = $(CODE_COVERAGE_LIBS) $(GLIB_LIBS) $(PYTHON_LIBS)
+testhelper_la_LIBADD = $(CODE_COVERAGE_LIBS) $(GLIB_LIBS) $(extension_libadd)
 
 testhelper_la_SOURCES = \
        testhelpermodule.c \