Commit 154caa67 authored by Mans Rullgard's avatar Mans Rullgard
Browse files

configure: add --enable/disable-random option



This allows creating random configurations which is useful for
testing purposes.
Signed-off-by: default avatarMans Rullgard <mans@mansr.com>
parent 578344f7
......@@ -266,6 +266,14 @@ Developer options (useful when working on Libav itself):
\$LIBAV_SAMPLES at make invocation time.
--enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
should be used only for debugging purposes)
--enable-random randomly enable/disable components
--disable-random
--enable-random=LIST randomly enable/disable specific components or
--disable-random=LIST component groups. LIST is a comma-separated list
of NAME[:PROB] entries where NAME is a component
(group) and PROB the probability associated with
NAME (default 0.5).
--random-seed=VALUE seed value for --enable/disable-random
NOTE: Object files are built at the place where configure is launched.
EOF
......@@ -1270,6 +1278,7 @@ CMDLINE_SET="
nm
optflags
pkg_config
random_seed
samples
sysinclude
sysroot
......@@ -1846,6 +1855,27 @@ show_list() {
exit 0
}
rand_list(){
IFS=', '
set -- $*
unset IFS
for thing; do
comp=${thing%:*}
prob=${thing#$comp}
prob=${prob#:}
is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
echo "prob ${prob:-0.5}"
printf '%s\n' $comp
done
}
do_random(){
action=$1
shift
random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
$action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
}
for opt do
optval="${opt#*=}"
case "$opt" in
......@@ -1860,6 +1890,14 @@ for opt do
--disable-everything)
map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
;;
--enable-random|--disable-random)
action=${opt%%-random}
do_random ${action#--} $COMPONENT_LIST
;;
--enable-random=*|--disable-random=*)
action=${opt%%-random=*}
do_random ${action#--} $optval
;;
--enable-*=*|--disable-*=*)
eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
......@@ -3390,6 +3428,8 @@ echo "libxvid enabled ${libxvid-no}"
echo "openssl enabled ${openssl-no}"
echo "zlib enabled ${zlib-no}"
echo "bzlib enabled ${bzlib-no}"
test -n "$random_seed" &&
echo "random seed ${random_seed}"
echo
for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
......
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