[Pixman] [PATCH] Print a warning when a development snapshot is being configured.

[Søren Sandmann]

From: Søren Sandmann Pedersen <ssp at redhat.com>

It seems to be relatively common for people to use development
snapshots of pixman thinking they are ordinary releases. This patch
makes it such that if the current minor version is odd, configure will
print a banner explaining the version number scheme plus information
about where to report bugs.
---
 configure.ac |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index e2f73dc..ab2ecde 100644
--- a/configure.ac
+++ b/configure.ac
@@ -795,3 +795,26 @@ AC_OUTPUT([pixman-1.pc
 	   pixman/Makefile
 	   pixman/pixman-version.h
 	   test/Makefile])
+
+m4_if(m4_eval(pixman_minor % 2), [1], [
+   echo
+   echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"
+   echo
+   echo "      Thanks for testing this development snapshot of pixman. Please"
+   echo "      report any problems you find, either by sending email to "
+   echo
+   echo "          pixman at lists.freedesktop.org"
+   echo
+   echo "      or by filing a bug at "
+   echo
+   echo "          https://bugs.freedesktop.org/enter_bug.cgi?product=pixman "
+   echo
+   echo "      If you are looking for a stable release of pixman, please note "
+   echo "      that stable releases have _even_ minor version numbers. Ie., "
+   echo "      pixman-0.]m4_eval(pixman_minor & ~1)[.x are stable releases, whereas pixman-$PIXMAN_VERSION_MAJOR.$PIXMAN_VERSION_MINOR.$PIXMAN_VERSION_MICRO is a "
+   echo "      development snapshot that may contain bugs and experimental "
+   echo "      features. "
+   echo 
+   echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"
+   echo
+])
-- 
1.7.3.1