Add -lm to C and CPP compilation commands

diff --git a/gruntmaster-compile b/gruntmaster-compile
index be900b9ac565fc4b2f2ac2b757b8f1710ae126c2..5af89b96dfc0dbecc086bc55daa6c118e0c61fa2 100755 (executable)
--- a/gruntmaster-compile
+++ b/gruntmaster-compile
@@ -9,8 +9,8 @@ my ($format, $name) = @ARGV;
 my $basename = fileparse $name, qr/\..*/;
 
 given ($format){
-       exec 'gcc', qw/-DONLINE_JUDGE -std=gnu11 -Wall -Wextra -O2 -o/, $basename, $name when 'C';
-       exec 'g++', qw/-DONLINE_JUDGE -std=gnu++11 -Wall -Wextra -O2 -o/, $basename, $name when 'CPP';
+       exec 'gcc', qw/-DONLINE_JUDGE -std=gnu11 -Wall -Wextra -lm -O2 -o/, $basename, $name when 'C';
+       exec 'g++', qw/-DONLINE_JUDGE -std=gnu++11 -Wall -Wextra -lm -O2 -o/, $basename, $name when 'CPP';
        when ('MONO') {
                system 'gmcs', '-d:ONLINE_JUDGE', $name and die "gmcs failed: errno=$! return=$?";
                rename "$basename.exe", $basename;