Hi- gnu cobol 3.2 cygwin windows posix install tried file cygcob-4.dll it is valid tried running with ... please see last couple of lines for the way i ran ccob.exe with switches please advise don't know why it prefers cygcob-4.dll but told it was a substitute but that doesnt have dependency libcob.dll when i use ldd please see below.. thanks $> ./cobcrun.exe -v /usr/local/bin/blob.dll libcob: error: module 'blob.dll' not found $> ldd cygcob-4.dll ntdll.dll => /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll (0x7ffbf6730000) KERNEL32.DLL => /cygdrive/c/WINDOWS/System32/KERNEL32.DLL (0x7ffbf5de0000) KERNELBASE.dll => /cygdrive/c/WINDOWS/System32/KERNELBASE.dll (0x7ffbf3a50000) msvcrt.dll => /cygdrive/c/WINDOWS/System32/msvcrt.dll (0x7ffbf6100000) cygwin1.dll => /usr/bin/cygwin1.dll (0x7ffbdc5b0000) cygdb-18.1.dll => /usr/bin/cygdb-18.1.dll (0x3f8700000) cyggmp-10.dll => /usr/bin/cyggmp-10.dll (0x3f99d0000) cygintl-8.dll => /usr/bin/cygintl-8.dll (0x3f91f0000) cygjson-c-5.dll => /usr/bin/cygjson-c-5.dll (0x3f3210000) cygncursesw-10.dll => /usr/bin/cygncursesw-10.dll (0x3f8c00000) cygcrypto-3.dll => /usr/bin/cygcrypto-3.dll (0x3fa470000) cygxml2-2.dll => /usr/bin/cygxml2-2.dll (0x3f7bc0000) cygssl-3.dll => /usr/bin/cygssl-3.dll (0x3f81f0000) cygiconv-2.dll => /usr/bin/cygiconv-2.dll (0x3f9220000) cyggcc_s-seh-1.dll => /usr/bin/cyggcc_s-seh-1.dll (0x3f9ec0000) cygiconv-2.dll => /usr/bin/cygiconv-2.dll (0x1900000) cygz.dll => /usr/bin/cygz.dll (0x3f7ba0000) cyglzma-5.dll => /usr/bin/cyglzma-5.dll (0x3f8ef0000) cygz.dll => /usr/bin/cygz.dll (0x1470000) advapi32.dll => /cygdrive/c/WINDOWS/System32/advapi32.dll (0x7ffbf5c20000) sechost.dll => /cygdrive/c/WINDOWS/System32/sechost.dll (0x7ffbf5450000) bcrypt.dll => /cygdrive/c/WINDOWS/System32/bcrypt.dll (0x7ffbf43b0000) RPCRT4.dll => /cygdrive/c/WINDOWS/System32/RPCRT4.dll (0x7ffbf65d0000) CRYPTBASE.DLL => /cygdrive/c/WINDOWS/SYSTEM32/CRYPTBASE.DLL (0x7ffbf31f0000) bcryptPrimitives.dll => /cygdrive/c/WINDOWS/System32/bcryptPrimitives.dll (0x7ffbf43e0000) $> cobc.exe -o blob.exe blob.cob -L/usr/local/lib -lcob $> ls blob.cob blob.dll blob.exe cobc.exe cob-config cobcrun.exe cygcob-4.dll platinfo $> ./cobcrun.exe ./blob.dll libcob: error: module 'blob.dll' not found $> Sent with Proton Mail secure email.