CI: Introduce and use LIBPCAP_TAINTED. [skip appveyor]

Same as in tcpslice and tcpdump earlier.  This should cover both
Autoconf and CMake.

1 files changed, 7 insertions, 0 deletions

diff --git a/build_matrix.sh b/build_matrix.sh
index 8ac70225..7343a6b8 100755
--- a/build_matrix.sh
+++ b/build_matrix.sh
@@ -6,6 +6,12 @@
 : "${MATRIX_CC:=gcc clang}"
 : "${MATRIX_CMAKE:=no yes}"
 : "${MATRIX_REMOTE:=no yes}"
+# Set this variable to "yes" before calling this script to disregard all
+# warnings in a particular environment (CI or a local working copy).  Set it
+# to "yes" in this script or in build.sh when a matrix subset is known to be
+# not warning-free because of the OS, the compiler or whatever other factor
+# that the scripts can detect both in and out of CI.
+: "${LIBPCAP_TAINTED:=no}"
 # It calls the build.sh script which runs one build with setup environment
 # variables: CC, CMAKE and REMOTE.
 
@@ -19,6 +25,7 @@ if [ -z "$PREFIX" ]; then
     export PREFIX
 fi
 COUNT=0
+export LIBPCAP_TAINTED
 
 touch .devel configure
 for CC in $MATRIX_CC; do