aubio jack: workaround for default python being v3

src/aubio.mk

@@ -23,6 +23,7 @@ define $(PKG)_BUILD
         AR='$(TARGET)-ar'                         \
         CC='$(TARGET)-gcc'                        \
         PKGCONFIG='$(TARGET)-pkg-config'          \
+        $(PYTHON2)                                \
         '$(BUILD_DIR)/$(waf_SUBDIR)/waf'          \
             configure                             \
             -j '$(JOBS)'                          \
@@ -37,7 +38,7 @@ define $(PKG)_BUILD
     # disable txt2man and doxygen
     $(SED) -i '/\(TXT2MAN\|DOXYGEN\)/d' '$(1)/build/c4che/_cache.py'
 
-    cd '$(1)' && '$(BUILD_DIR)/$(waf_SUBDIR)/waf' build install
+    cd '$(1)' && $(PYTHON2) '$(BUILD_DIR)/$(waf_SUBDIR)/waf' build install
 
     '$(TARGET)-gcc'                               \
         -W -Wall -Werror -ansi -pedantic          \

src/jack.mk

@@ -24,7 +24,7 @@ define $(PKG)_BUILD
         CC='$(TARGET)-gcc'                        \
         CXX='$(TARGET)-g++'                       \
         PKGCONFIG='$(TARGET)-pkg-config'          \
-        ./waf configure build install             \
+        $(PYTHON2) waf configure build install    \
             -j '$(JOBS)'                          \
             --prefix='$(PREFIX)/$(TARGET)'        \
             --dist-target=mingw