build: Add ./configure --disable-python option.

This disables the Python language bindings.
(cherry picked from commit 3a7eb8ebdb47878ab9bd6b8aff88744365179f87)

diff --git a/configure.ac b/configure.ac
index 8b6c78e..a6ccafa 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -543,56 +543,63 @@ AM_CONDITIONAL([HAVE_PERL],
     [test "x$PERL" != "xno" && test "x$missing_perl_modules" != "xyes"])
 
 dnl Check for Python (optional, for Python bindings).
-AC_CHECK_PROG([PYTHON],[python],[python],[no])
-
 PYTHON_PREFIX=
 PYTHON_VERSION=
 PYTHON_INCLUDEDIR=
 PYTHON_SITE_PACKAGES=
 
-if test "x$PYTHON" != "xno"; then
-    PYTHON_PREFIX=`$PYTHON -c "import sys; print sys.prefix"`
-    PYTHON_VERSION=`$PYTHON -c "import sys; print sys.version[[0:3]]"`
-    for d in \
-        $PYTHON_PREFIX/include/python$PYTHON_VERSION \
-        /usr/include/python$PYTHON_VERSION \
-        /usr/local/include/python$PYTHON_VERSION
-    do
-        AC_MSG_CHECKING([Python.h in $d])
-        if test -r "$d/Python.h"; then
-            AC_MSG_RESULT([found])
-            PYTHON_INCLUDEDIR=$d
-            break
-        fi
-        AC_MSG_RESULT([not found])
-    done
-    for d in \
-        $PYTHON_PREFIX/lib64/python$PYTHON_VERSION/site-packages \
-        $PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages \
-        /usr/lib64/python$PYTHON_VERSION/site-packages \
-        /usr/lib/python$PYTHON_VERSION/site-packages \
-        /usr/local/lib/python$PYTHON_VERSION/site-packages
-    do
-        AC_MSG_CHECKING([for $d])
-        if test -d "$d"; then
-            AC_MSG_RESULT([found])
-            PYTHON_SITE_PACKAGES=$d
-            break
+AC_ARG_ENABLE([python],
+        AS_HELP_STRING([--disable-python], [Disable Python language bindings]),
+        [],
+        [enable_python=yes])
+AS_IF([test "x$enable_python" != "xno"],
+        [
+        AC_CHECK_PROG([PYTHON],[python],[python],[no])
+
+        if test "x$PYTHON" != "xno"; then
+            PYTHON_PREFIX=`$PYTHON -c "import sys; print sys.prefix"`
+            PYTHON_VERSION=`$PYTHON -c "import sys; print sys.version[[0:3]]"`
+            for d in \
+                $PYTHON_PREFIX/include/python$PYTHON_VERSION \
+                /usr/include/python$PYTHON_VERSION \
+                /usr/local/include/python$PYTHON_VERSION
+            do
+                AC_MSG_CHECKING([Python.h in $d])
+                if test -r "$d/Python.h"; then
+                    AC_MSG_RESULT([found])
+                    PYTHON_INCLUDEDIR=$d
+                    break
+                fi
+                AC_MSG_RESULT([not found])
+            done
+
+            for d in \
+                $PYTHON_PREFIX/lib64/python$PYTHON_VERSION/site-packages \
+                $PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages \
+                /usr/lib64/python$PYTHON_VERSION/site-packages \
+                /usr/lib/python$PYTHON_VERSION/site-packages \
+                /usr/local/lib/python$PYTHON_VERSION/site-packages
+            do
+                AC_MSG_CHECKING([for $d])
+                if test -d "$d"; then
+                    AC_MSG_RESULT([found])
+                    PYTHON_SITE_PACKAGES=$d
+                    break
+                fi
+                AC_MSG_RESULT([not found])
+            done
+
+            old_LIBS="$LIBS"
+            LIBS="$LIBS -lpython$PYTHON_VERSION"
+            AC_CHECK_FUNCS([PyCapsule_New])
+            LIBS="$old_LIBS"
         fi
-        AC_MSG_RESULT([not found])
-    done
-
-    old_LIBS="$LIBS"
-    LIBS="$LIBS -lpython$PYTHON_VERSION"
-    AC_CHECK_FUNCS([PyCapsule_New])
-    LIBS="$old_LIBS"
-fi
-
-AC_SUBST(PYTHON_PREFIX)
-AC_SUBST(PYTHON_VERSION)
-AC_SUBST(PYTHON_INCLUDEDIR)
-AC_SUBST(PYTHON_SITE_PACKAGES)
 
+        AC_SUBST(PYTHON_PREFIX)
+        AC_SUBST(PYTHON_VERSION)
+        AC_SUBST(PYTHON_INCLUDEDIR)
+        AC_SUBST(PYTHON_SITE_PACKAGES)
+        ])
 AM_CONDITIONAL([HAVE_PYTHON],
     [test "x$PYTHON_INCLUDEDIR" != "x" && test "x$PYTHON_SITE_PACKAGES" != "x"])