improve comment

[debhelper.git] / Debian / Debhelper / Buildsystem / python_distutils.pm

diff --git a/Debian/Debhelper/Buildsystem/python_distutils.pm b/Debian/Debhelper/Buildsystem/python_distutils.pm
index cca000d6f5f616881a4d390ffe7e151f1154f6f6..2ee2cc12b637a061b24df25ab34f81383c7365a9 100644 (file)
--- a/Debian/Debhelper/Buildsystem/python_distutils.pm
+++ b/Debian/Debhelper/Buildsystem/python_distutils.pm
@@ -61,12 +61,12 @@ sub pre_building_step {
 
        return unless grep /$step/, qw(build install clean);
 
-       # --build-base can only be passed to the build command. However,
-       # it is always read from the config file (really weird design).
-       # Therefore create such a cfg config file.
-       # See http://bugs.python.org/issue818201
-       #     http://bugs.python.org/issue1011113
        if ($this->get_buildpath() ne $this->DEFAULT_BUILD_DIRECTORY()) {
+               # --build-base can only be passed to the build command. However,
+               # it is always read from the config file (really weird design).
+               # Therefore create such a cfg config file.
+               # See http://bugs.python.org/issue818201
+               #     http://bugs.python.org/issue1011113
                not $this->not_our_cfg() or
                    error("cannot set custom build directory: .pydistutils.cfg is in use");
                $this->mkdir_builddir();
@@ -82,7 +82,21 @@ sub pre_building_step {
 sub setup_py {
        my $this=shift;
        my $act=shift;
-       $this->doit_in_sourcedir("python", "setup.py", $act, @_);
+
+       # We need to to run setup.py with the default python first
+       # as distutils/setuptools modifies the shebang lines of scripts.
+       # This ensures that #!/usr/bin/python is used and not pythonX.Y
+       # Then, run setup.py with each available python, to build
+       # extensions for each.
+       my $python_default = `pyversions -d`;
+       $python_default =~ s/^\s+//;
+       $python_default =~ s/\s+$//;
+       foreach my $python ("python", grep(!/^$python_default/,
+                               (split ' ', `pyversions -r 2>/dev/null`))) {
+               if (-x "/usr/bin/".$python) {
+                       $this->doit_in_sourcedir($python, "setup.py", $act, @_);
+               }
+       }
 }
 
 sub build {