'libecasoundc-config' is not recognized as an internal or external command, operable program or batch file. Note (probably harmless): No library found for '-lecasoundc' oundc (hanging on loading). It has worked fine for some. You are welcome to try... Proceed anyway? (yn) Version 2.2.0+ of ecasound is required, you have . Proceed anyway (bad idea)? (yn) ECI now uses the "ECASOUND" env var to find the ecasound executable. Set it correctly to suppress the library warning. (The PATH is searched so ECASOUND=ecasound usually works) Writing Makefile for Audio::Ecasound cp Ecasound.pm blib\lib\Audio\Ecasound.pm D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. D:\cpanrun\build\5-6-1\lib\ExtUtils\typemap -typemap typemap Ecasound.xs > Ecasound.xsc && D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib -MExtUtils::Command -e mv Ecasound.xsc Ecasound.c cl -c -nologo -O1 -MD -Zi -DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DPERL_MSVCRT_READFIX -O1 -MD -Zi -DNDEBUG -DVERSION=\"0.91\" -DXS_VERSION=\"0.91\" -ID:\cpanrun\build\5-6-1\lib\CORE Ecasound.c Ecasound.c Ecasound.xs(5) : fatal error C1083: Cannot open include file: 'libecasoundc/ecasoundc.h': No such file or directory