From: Emil Velikov <emil.veli...@collabora.com>

Bail early, as opposed to later on during the build.

Signed-off-by: Emil Velikov <emil.veli...@collabora.com>
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5f75c60..0932871 100644
--- a/configure.ac
+++ b/configure.ac
@@ -142,6 +142,12 @@ else
     fi
 fi
 
+if test -z "$PYTHON3"; then
+    if test ! -f "$srcdir/src/intel/genxml/gen9_pack.h"; then
+        AC_MSG_ERROR([Python3 not found - unable to generate sources])
+    fi
+fi
+
 AC_PROG_INSTALL
 
 dnl We need a POSIX shell for parts of the build. Assume we have one
-- 
2.6.2

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