diff options
| -rwxr-xr-x | kerl | 28 |
1 files changed, 25 insertions, 3 deletions
@@ -390,13 +390,35 @@ get_otp_version() get_perl_version() { - perl -v | grep version | sed $SED_OPT -e 's/.*v5\.([0-9]+)\.[0-9].*/\1/' + if assert_perl; then + perl -v | grep version | sed $SED_OPT -e 's/.*v5\.([0-9]+)\.[0-9].*/\1/' + else + echo "FATAL: I couldn't find perl which is required to compile Erlang." + exit 1 + fi +} + +assert_perl() +{ + perl_loc=$(which perl) + if [ -z "$perl_loc" ]; then + return 1 + else + # 0 to bash is "true" because of Unix exit code conventions + return 0 + fi } get_javac_version() { - javaout=$(javac -version 2>&1) - echo "$javaout" | cut -d' ' -f2 | cut -d'.' -f2 + java_loc=$(which javac) + if [ -z "$java_loc" ]; then + # Java's not installed, so just return 0 + 0 + else + javaout=$(javac -version 2>&1) + echo "$javaout" | cut -d' ' -f2 | cut -d'.' -f2 + fi } show_configuration_warnings() |