Cygwin perl calls /bin/sh which can't resolve to .exe Also Cygwin perl has $Config{osname} different from MSWin32, and why even check that? --- postgresql/src/tools/msvc/build.pl.orig 2021-01-19 17:36:09.801463500 +0100 +++ postgresql/src/tools/msvc/build.pl 2021-01-19 17:36:20.426821300 +0100 @@ -55,13 +55,13 @@ if ($buildwhat) { system( - "msbuild $buildwhat.vcxproj /verbosity:normal $msbflags /p:Configuration=$bconf" + "msbuild.exe $buildwhat.vcxproj /verbosity:normal $msbflags /p:Configuration=$bconf" ); } else { system( - "msbuild pgsql.sln /verbosity:normal $msbflags /p:Configuration=$bconf" + "msbuild.exe pgsql.sln /verbosity:normal $msbflags /p:Configuration=$bconf" ); } --- postgresql/src/tools/msvc/Project.pm.orig 2021-01-19 17:59:18.799237700 +0100 +++ postgresql/src/tools/msvc/Project.pm 2021-01-19 17:59:48.487711700 +0100 @@ -22,7 +22,7 @@ my $self = { name => $name, type => $type, - guid => $^O eq "MSWin32" ? Win32::GuidGen() : 'FAKE', + guid => Win32::GuidGen(), files => {}, references => [], libraries => [], --- postgresql/src/tools/msvc/Solution.pm.orig 2021-01-19 18:03:04.594229100 +0100 +++ postgresql/src/tools/msvc/Solution.pm 2021-01-19 18:04:13.677610100 +0100 @@ -59,7 +59,7 @@ { my $self = shift; - if ($^O eq "MSWin32") + if (1) #($^O eq "MSWin32") { # Examine CL help output to determine if we are in 32 or 64-bit mode. my $output = `cl /? 2>&1`; @@ -1100,7 +1100,7 @@ } if ($fld ne "") { - $flduid{$fld} = $^O eq "MSWin32" ? Win32::GuidGen() : 'FAKE'; + $flduid{$fld} = Win32::GuidGen(); print $sln <{options}->{openssl}\\bin\\openssl.exe" version 2>&1); + qq("$self->{options}->{openssl}\\apps\\openssl.exe" version 2>&1); + print "$opensslcmd"; my $sslout = `$opensslcmd`; $? >> 8 == 0 @@ -967,8 +967,8 @@ # On both Win32 and Win64 the same library # names are used without a debugging context. $dbgsuffix = 0; - $libsslpath = '\lib\libssl.lib'; - $libcryptopath = '\lib\libcrypto.lib'; + $libsslpath = '\libssl.lib'; + $libcryptopath = '\libcrypto.lib'; } $proj->AddLibrary($self->{options}->{openssl} . $libsslpath, @@ -993,9 +993,9 @@ # to be here, so don't ask for it in last # parameter. $proj->AddLibrary( - $self->{options}->{openssl} . '\lib\ssleay32.lib', 0); + $self->{options}->{openssl} . '\ssleay32.lib', 0); $proj->AddLibrary( - $self->{options}->{openssl} . '\lib\libeay32.lib', 0); + $self->{options}->{openssl} . '\libeay32.lib', 0); } } }