build/m4: fix python library detection on Ubuntu systems

16cc3362aed doesn't work on Ubuntu with gcc (but it does work with
clang). Work around it by manipulating LIBS.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>

diff --git a/m4/python_devel.m4 b/m4/python_devel.m4
index f9cb23aee100dd55fb638cbd280b1448df22e7e4..7f26381376777584bb37ad3066a9076f2bb6b7d6 100644 (file)
--- a/m4/python_devel.m4
+++ b/m4/python_devel.m4
@@ -1,6 +1,7 @@
 AC_DEFUN([AX_CHECK_PYTHON_DEVEL], [
 ac_previous_cppflags=$CPPFLAGS
 ac_previous_ldflags=$LDFLAGS
+ac_previous_libs=$LIBS
 AC_PATH_PROG([pyconfig], [$PYTHON-config], [no])
 AS_IF([test x"$pyconfig" = x"no"], [
     dnl For those that don't have python-config
@@ -15,10 +16,15 @@ AS_IF([test x"$pyconfig" = x"no"], [
         print(distutils.sysconfig.get_config_var("LINKFORSHARED"))'`"
     LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
         print(distutils.sysconfig.get_config_var("LDFLAGS"))'`"
+    LIBS="$LIBS `$PYTHON -c 'import distutils.sysconfig; \
+        print(distutils.sysconfig.get_config_var("LIBS"))'`"
+    LIBS="$LIBS `$PYTHON -c 'import distutils.sysconfig; \
+        print(distutils.sysconfig.get_config_var("SYSLIBS"))'`"
 ], [
     dnl If python-config is found use it
     CPPFLAGS="$CFLAGS `$PYTHON-config --cflags`"
     LDFLAGS="$LDFLAGS `$PYTHON-config --ldflags`"
+    LIBS="$LIBS `$PYTHON-config --libs`"
 ])
 
 AC_CHECK_HEADER([Python.h], [],
@@ -28,4 +34,5 @@ AC_CHECK_FUNC([PyArg_ParseTuple], [],
 
 CPPFLAGS=$ac_previous_cppflags
 LDFLAGS=$ac_previous_ldflags
+LIBS=$ac_previous_libs
 ])

diff --git a/tools/configure b/tools/configure
index 9ff879548aee7f2ad6dda4b9483c4734fde167fe..b66d3f6fbad12303746f9213ddc445bc81018c92 100755 (executable)
--- a/tools/configure
+++ b/tools/configure
@@ -7418,6 +7418,7 @@ if test "$cross_compiling" != yes; then :
 
 ac_previous_cppflags=$CPPFLAGS
 ac_previous_ldflags=$LDFLAGS
+ac_previous_libs=$LIBS
 # Extract the first word of "$PYTHON-config", so it can be a program name with args.
 set dummy $PYTHON-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -7472,11 +7473,16 @@ if test x"$pyconfig" = x"no"; then :
         print(distutils.sysconfig.get_config_var("LINKFORSHARED"))'`"
     LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
         print(distutils.sysconfig.get_config_var("LDFLAGS"))'`"
+    LIBS="$LIBS `$PYTHON -c 'import distutils.sysconfig; \
+        print(distutils.sysconfig.get_config_var("LIBS"))'`"
+    LIBS="$LIBS `$PYTHON -c 'import distutils.sysconfig; \
+        print(distutils.sysconfig.get_config_var("SYSLIBS"))'`"
 
 else
 
         CPPFLAGS="$CFLAGS `$PYTHON-config --cflags`"
     LDFLAGS="$LDFLAGS `$PYTHON-config --ldflags`"
+    LIBS="$LIBS `$PYTHON-config --libs`"
 
 fi
 
@@ -7498,6 +7504,7 @@ fi
 
 CPPFLAGS=$ac_previous_cppflags
 LDFLAGS=$ac_previous_ldflags
+LIBS=$ac_previous_libs
 
 
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether Python setup.py brokenly enables -D_FORTIFY_SOURCE" >&5