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Re: [libvirt] [PATCH] build: force configure failed when perl is missing

On 14.08.2014 05:37, Jincheng Miao wrote:
Perl is necessary to our build processing, it will invoke a lot of
generating script, like: gendispatch.pl. If perl is missing, it's
ok for build from git checkout, because autogen.sh will tell you.
But for compiling from a release tarball, configure will just record
a missing message, and continue, then build failed, like:

So need to enhance configure script to handle this negative case.

Reported-by: Hongbin Lu <hongbin savinetwork ca>
Signed-off-by: Jincheng Miao <jmiao redhat com>
  configure.ac |    3 +++
  1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index 081f298..af3fe28 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2173,6 +2173,9 @@ AM_CONDITIONAL([WITH_HYPERV], [test "$with_hyperv" = "yes"])
  dnl Allow perl/python overrides
  AC_PATH_PROGS([PYTHON], [python2 python])
  AC_PATH_PROG([PERL], [perl])
+if test -z "$PERL"; then
+         AC_MSG_ERROR([Failed to find perl.])


I'm inclined to ACK this. We currently have some files that can be built from git and are contained in the release so we cut off the set of required tools to build the libvirt. However, with so widely accessible tool as perl (which is almost everywhere) we don't need to do that. Moreover, there are some Makefile targets which have runtime dependency on perl, e.g. bracket-spacing-check syntax-check rule.

And with this change I think we need this one too:

diff --git a/libvirt.spec.in b/libvirt.spec.in
index 29da071..f491de7 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -446,6 +446,7 @@ BuildRequires: gettext-devel
 BuildRequires: libtool
 BuildRequires: /usr/bin/pod2man
+BuildRequires: perl
 BuildRequires: python
 %if %{with_systemd}
 BuildRequires: systemd-units

Again, I'm not expecting to see any RPM based distribution without perl (esp. if rpm-build package requires perl itself). But we should have it for completeness.

So I'm squashing it in and pushing.



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