Add proposed patch for Python 3.8 (RHBZ#1705482).

0001-python-PYTHON_LIBS-is-not-set-in-Python-3.8-RHBZ-170.patch

@@ -0,0 +1,54 @@
+From c4638739d684609471cfa94c08e7b90c70ea3e83 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Fri, 31 May 2019 13:07:25 +0100
+Subject: [PATCH] python: PYTHON_LIBS is not set in Python 3.8 (RHBZ#1705482).
+
+Python 3.8 no longer links C extensions to -lpython, instead relying
+on the fact that the python binary itself already contains those
+symbols.  This means $PYTHON_LIBS is empty and so the Python bindings
+are not built.
+
+Use a different test to see if the python module is available.
+---
+ m4/guestfs-python.m4 | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/m4/guestfs-python.m4 b/m4/guestfs-python.m4
+index 7d4c991bb..befa9b102 100644
+--- a/m4/guestfs-python.m4
++++ b/m4/guestfs-python.m4
+@@ -33,14 +33,17 @@ AS_IF([test "x$enable_python" != "xno"],[
+         PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info@<:@1@:>@)"`
+         PYTHON_VERSION="$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR"
+ 	AC_MSG_RESULT([$PYTHON_VERSION])
++
+         # Debian: python-2.7.pc, python-3.2.pc
+         PKG_CHECK_MODULES([PYTHON], [python-"$PYTHON_VERSION"],[
++            have_python_module=1
+             AC_SUBST([PYTHON_CFLAGS])
+             AC_SUBST([PYTHON_LIBS])
+             AC_SUBST([PYTHON_VERSION])
+             AC_DEFINE([HAVE_PYTHON],[1],[Python library found at compile time])
+         ],[
+             PKG_CHECK_MODULES([PYTHON], [python],[
++                have_python_module=1
+                 AC_SUBST([PYTHON_CFLAGS])
+                 AC_SUBST([PYTHON_LIBS])
+                 AC_SUBST([PYTHON_VERSION])
+@@ -49,6 +52,7 @@ AS_IF([test "x$enable_python" != "xno"],[
+                 AC_MSG_WARN([python $PYTHON_VERSION not found])
+             ])
+         ])
++
+         AC_MSG_CHECKING([Python prefix])
+         PYTHON_PREFIX=`$PYTHON -c "import sys; print (sys.prefix)"`
+         AC_MSG_RESULT([$PYTHON_PREFIX])
+@@ -101,4 +105,4 @@ AS_IF([test "x$enable_python" != "xno"],[
+     AC_SUBST(PYTHON_EXT_SUFFIX)
+ ])
+ AM_CONDITIONAL([HAVE_PYTHON],
+-    [test "x$PYTHON" != "xno" && test "x$PYTHON_LIBS" != "x" ])
++    [test "x$PYTHON" != "xno" && test "x$have_python_module" = "x1" ])
+-- 
+2.21.0
+

libguestfs.spec

@@ -43,7 +43,7 @@ Summary:       Access and modify virtual machine disk images
 Name:          libguestfs
 Epoch:         1
 Version:       1.40.2
-Release:       4%{?dist}
+Release:       5%{?dist}
 License:       LGPLv2+
 
 # Source and patches.
@@ -67,6 +67,9 @@ Source6:       yum.conf.in
 Source7:       libguestfs.keyring
 %endif
 
+# See https://bugzilla.redhat.com/show_bug.cgi?id=1705482
+Patch0001:     0001-python-PYTHON_LIBS-is-not-set-in-Python-3.8-RHBZ-170.patch
+
 %if 0%{patches_touch_autotools}
 BuildRequires: autoconf, automake, libtool, gettext-devel
 %endif
@@ -1310,6 +1313,9 @@ install -m 0644 utils/boot-benchmark/boot-benchmark.1 $RPM_BUILD_ROOT%{_mandir}/
 
 
 %changelog
+* Fri May 31 2019 Richard W.M. Jones <rjones@redhat.com> - 1:1.40.2-5
+- Add proposed patch for Python 3.8 (RHBZ#1705482).
+
 * Mon Mar 18 2019 Richard W.M. Jones <rjones@redhat.com> - 1:1.40.2-4
 - Remove Java bindings.
   https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/CW4XMOIKMNRRPAZ4H2ER7VPBY6YV2ODL/#YHTZ7IGVTKPWCBOY5C6UW7BMX7F35R5Q