[Python-checkins] cpython: disable ASDLGEN if hg won't work, or if python is not installed.

benjamin.peterson python-checkins at python.org
Wed Jun 1 00:11:25 CEST 2011


http://hg.python.org/cpython/rev/435eec7b41f0
changeset:   70552:435eec7b41f0
user:        Ralf Schmitt <ralf at systemexit.de>
date:        Tue May 31 17:10:03 2011 -0500
summary:
  disable ASDLGEN if hg won't work, or if python is not installed.
This change makes configure check for
- the existence of a hg repository
- the hg executable itself
- the python executable

Running $(srcdir)/Parser/asdl_c.py (i.e. ASDLGEN) will fail if any of
the above prerequisites is missing, so we now disable it instead.

closes #12225

files:
  Makefile.pre.in |   2 +-
  configure.in    |  15 +++++++++++++++
  2 files changed, 16 insertions(+), 1 deletions(-)


diff --git a/Makefile.pre.in b/Makefile.pre.in
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -274,7 +274,7 @@
 
 ASDLGEN_FILES=	$(srcdir)/Parser/asdl.py $(srcdir)/Parser/asdl_c.py
 # XXX Note that a build now requires Python exist before the build starts
-ASDLGEN=	$(srcdir)/Parser/asdl_c.py
+ASDLGEN=	@DISABLE_ASDLGEN@ $(srcdir)/Parser/asdl_c.py
 
 ##########################################################################
 # Python
diff --git a/configure.in b/configure.in
--- a/configure.in
+++ b/configure.in
@@ -811,7 +811,13 @@
 AC_SUBST(HGVERSION)
 AC_SUBST(HGTAG)
 AC_SUBST(HGBRANCH)
+
+if test -e $srcdir/.hg/00changelog.i
+then
 AC_CHECK_PROG(HAS_HG, hg, found, not-found)
+else
+HAS_HG=no-repository
+fi
 if test $HAS_HG = found
 then
     HGVERSION="hg id -i \$(srcdir)"
@@ -823,6 +829,15 @@
     HGBRANCH=""
 fi
 
+AC_SUBST(DISABLE_ASDLGEN)
+DISABLE_ASDLGEN=""
+AC_CHECK_PROG(HAS_PYTHON, python, found, not-found)
+if test $HAS_HG != found -o $HAS_PYTHON != found
+then
+    DISABLE_ASDLGEN="@echo hg: $HAS_HG, python: $HAS_PYTHON! cannot run \$(srcdir)/Parser/asdl_c.py #"
+fi
+
+
 case $MACHDEP in
 bsdos*|hp*|HP*)
 	# install -d does not work on BSDI or HP-UX

-- 
Repository URL: http://hg.python.org/cpython


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