| 18 | | unset foo |
| 19 | | (: ${foo%%bar}) 2>/dev/null |
| 20 | | E1="$?" |
| 21 | | |
| 22 | | (: ${foo?}) 2>/dev/null |
| 23 | | E2="$?" |
| 24 | | |
| 25 | | if test "$E1" != 0 || test "$E2" = 0; then |
| 26 | | echo "Broken shell detected. Trying alternatives." |
| 27 | | export FF_CONF_EXEC |
| 28 | | if test "0$FF_CONF_EXEC" -lt 1; then |
| 29 | | FF_CONF_EXEC=1 |
| 30 | | try_exec bash "$0" "$@" |
| 31 | | fi |
| 32 | | if test "0$FF_CONF_EXEC" -lt 2; then |
| 33 | | FF_CONF_EXEC=2 |
| 34 | | try_exec ksh "$0" "$@" |
| 35 | | fi |
| 36 | | if test "0$FF_CONF_EXEC" -lt 3; then |
| 37 | | FF_CONF_EXEC=3 |
| 38 | | try_exec /usr/xpg4/bin/sh "$0" "$@" |
| 39 | | fi |
| 40 | | echo "No compatible shell script interpreter found." |
| 41 | | echo "This configure script requires a POSIX-compatible shell" |
| 42 | | echo "such as bash or ksh." |
| 43 | | echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH." |
| 44 | | echo "Instead, install a working POSIX-compatible shell." |
| 45 | | echo "Disabling this configure test will create a broken FFmpeg." |
| 46 | | if test "$BASH_VERSION" = '2.04.0(1)-release'; then |
| 47 | | echo "This bash version ($BASH_VERSION) is broken on your platform." |
| 48 | | echo "Upgrade to a later version if available." |
| 49 | | fi |
| 50 | | exit 1 |
| 51 | | fi |
| 52 | | |
