tork applet error

if /bin/sh ../../libtool --silent --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I. -I../.. -I/opt/kde/include -I/opt/qt/include -I.   -DQT_THREAD_SUPPORT  -D_REENTRANT  -Wno-long-long -Wundef -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -O2 -Wformat-security -Wmissing-format-attribute -Wno-non-virtual-dtor -fno-exceptions -fno-check-new -fno-common  -MT functions.lo -MD -MP -MF ".deps/functions.Tpo" -c -o functions.lo `test -f '../functions.cpp' || echo './'`../functions.cpp; \
        then mv -f ".deps/functions.Tpo" ".deps/functions.Plo"; else rm -f ".deps/functions.Tpo"; exit 1; fi
../functions.cpp: In function 'QString getFullLocation(const char*, const QString&)':
../functions.cpp:130: error: 'getenv' was not declared in this scope
../functions.cpp: In function 'QStringList findPrograms(const QStringList&)':
../functions.cpp:155: error: 'getenv' was not declared in this scope
make[3]: *** [functions.lo] Error 1
make[3]: Leaving directory `/home/siva/downloads/tork-0.27/src/torkapplet'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/siva/downloads/tork-0.27/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/siva/downloads/tork-0.27'
make: *** [all] Error 2