configure,pyuno: require at least Python 2.7

Nobody needs to use 2.6 any more, so reduce the maintenance burden.

https://lists.freedesktop.org/archives/libreoffice/2018-March/079670.html

Change-Id: I101e26fbceffbe6119f4a6484530f27760b03eb4
Reviewed-on: https://gerrit.libreoffice.org/50816Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>
Tested-by: Jenkins <ci@libreoffice.org>

configure.ac

@@ -8040,14 +8040,14 @@ AC_SUBST(LIBXML_LIBS)
 AC_SUBST(XMLLINT)
 
 # =====================================================================
-# Checking for a Python interpreter with version >= 2.6.
-# Build and runtime requires Python 3 compatible version (>= 2.6).
+# Checking for a Python interpreter with version >= 2.7.
+# Build and runtime requires Python 3 compatible version (>= 2.7).
 # Optionally user can pass an option to configure, i. e.
 # ./configure PYTHON=/usr/bin/python
 # =====================================================================
 if test "$build_os" != "cygwin" -a "$enable_python" != fully-internal; then
     # This allows a lack of system python with no error, we use internal one in that case.
-    AM_PATH_PYTHON([2.6],, [:])
+    AM_PATH_PYTHON([2.7],, [:])
     # Clean PYTHON_VERSION checked below if cross-compiling
     PYTHON_VERSION=""
     if test "$PYTHON" != ":"; then
@@ -8228,11 +8228,11 @@ system)
 #include <Python.h>
 
 int main(int argc, char **argv) {
-   if ((PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION >= 6) ||
+   if ((PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION >= 7) ||
        (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION >= 3)) return 0;
    else return 1;
 }
-       ]])],[AC_MSG_RESULT([ok])],[AC_MSG_ERROR([Python >= 3.3 is needed when building with Python 3, or Python >= 2.6 when building with Python 2])],[AC_MSG_RESULT([skipped; cross-compiling])])
+       ]])],[AC_MSG_RESULT([ok])],[AC_MSG_ERROR([Python >= 3.3 is needed when building with Python 3, or Python >= 2.7 when building with Python 2])],[AC_MSG_RESULT([skipped; cross-compiling])])
     CFLAGS=$save_CFLAGS
     AC_LANG_POP(C)
 

pyuno/source/module/pyuno.cxx

@@ -1678,9 +1678,7 @@ static PyTypeObject PyUNOType =
     nullptr,
     nullptr,
     nullptr
-#if PY_VERSION_HEX >= 0x02060000
     , 0
-#endif
 #if PY_VERSION_HEX >= 0x03040000
     , nullptr
 #endif

pyuno/source/module/pyuno_callable.cxx

@@ -221,9 +221,7 @@ static PyTypeObject PyUNO_callable_Type =
     nullptr,
     nullptr,
     nullptr
-#if PY_VERSION_HEX >= 0x02060000
     , 0
-#endif
 #if PY_VERSION_HEX >= 0x03040000
     , nullptr
 #endif

pyuno/source/module/pyuno_runtime.cxx

@@ -115,9 +115,7 @@ static PyTypeObject RuntimeImpl_Type =
     nullptr,
     nullptr,
     nullptr
-#if PY_VERSION_HEX >= 0x02060000
     , 0
-#endif
 #if PY_VERSION_HEX >= 0x03040000
     , nullptr
 #endif

pyuno/source/module/pyuno_struct.cxx

@@ -340,9 +340,7 @@ static PyTypeObject PyUNOStructType =
     nullptr,
     nullptr,
     nullptr
-#if PY_VERSION_HEX >= 0x02060000
     , 0
-#endif
 #if PY_VERSION_HEX >= 0x03040000
     , nullptr
 #endif