note Anonymous Monk <p> "build" refers to Inline creating a module in _Inline (like h2xs) and making it at use/BEGIN time (perl Makefile.PL/make install), before your program runs, ex <spoiler><c> $ perl def.pl validate Stage Starting Build Preprocess Stage get_maps Stage Finished Build Preprocess Stage Starting Build Parse Stage Finished Build Parse Stage Starting Build Glue 1 Stage Finished Build Glue 1 Stage Starting Build Glue 2 Stage Finished Build Glue 2 Stage Starting Build Glue 3 Stage Finished Build Glue 3 Stage Starting Build Compile Stage Starting "perl Makefile.PL" Stage Writing Makefile for def_pl_38b1 Writing MYMETA.yml and MYMETA.json Finished "perl Makefile.PL" Stage Starting "make" Stage C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe C:\perl\site\5.14.1\lib\ExtUtils\xsubpp -typemap "C:\perl\5.14.1\l ib\ExtUtils\typemap" def_pl_38b1.xs > def_pl_38b1.xsc && C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtil s::Command -e mv -- def_pl_38b1.xsc def_pl_38b1.c gcc -c -I"D:/soInline" -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_S YS -fno-strict-aliasing -mms-bitfields -s -O2 -DVERSION=\"0.00\" -DXS_VERSION=\"0.00\" "-IC:\perl\5.14.1\lib\MSW in32-x86-multi-thread\CORE" def_pl_38b1.c Running Mkbootstrap for def_pl_38b1 () C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 def_pl_38b1.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Mksymlists \ -e "Mksymlists('NAME'=>\"def_pl_38b1\", 'DLBASE' => 'def_pl_38b1', 'DL_FUNCS' => { }, 'FUNCLIST' => [], 'IMPORTS' => { }, 'DL_VARS' => []);" dlltool --def def_pl_38b1.def --output-exp dll.exp g++ -o blib\arch\auto\def_pl_38b1\def_pl_38b1.dll -Wl,--base-file -Wl,dll.base -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x8 6-multi-thread\CORE" -L"C:\MinGW\lib" def_pl_38b1.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmo ldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2 _32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp dlltool --def def_pl_38b1.def --base-file dll.base --output-exp dll.exp g++ -o blib\arch\auto\def_pl_38b1\def_pl_38b1.dll -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE" -L"C:\Mi nGW\lib" def_pl_38b1.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmoldname -lkernel32 -luser32 -l gdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion - lodbc32 -lodbccp32 -lcomctl32 dll.exp C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 755 blib\arch\auto\def_pl_38b1\def_ pl_38b1.dll C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e cp -- def_pl_38b1.bs blib\arch\auto\def_pl_3 8b1\def_pl_38b1.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 blib\arch\auto\def_pl_38b1\def_ pl_38b1.bs Finished "make" Stage Starting "make install" Stage Files found in blib\arch: installing files in blib\lib into architecture dependent library tree Installing D:\soInline\_Inline\lib\auto\def_pl_38b1\def_pl_38b1.bs Installing D:\soInline\_Inline\lib\auto\def_pl_38b1\def_pl_38b1.dll Finished "make install" Stage Starting Cleaning Up Stage Finished Cleaning Up Stage Finished Build Compile Stage SV = IV(0x99aa48) at 0x99aa4c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 123 SV = IV(0x99aa48) at 0x99aa4c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 1 $ perl notdef.pl validate Stage Starting Build Preprocess Stage get_maps Stage Finished Build Preprocess Stage Starting Build Parse Stage Finished Build Parse Stage Starting Build Glue 1 Stage Finished Build Glue 1 Stage Starting Build Glue 2 Stage Finished Build Glue 2 Stage Starting Build Glue 3 Stage Finished Build Glue 3 Stage Starting Build Compile Stage Starting "perl Makefile.PL" Stage Writing Makefile for modSV Writing MYMETA.yml and MYMETA.json Finished "perl Makefile.PL" Stage Starting "make" Stage C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe C:\perl\site\5.14.1\lib\ExtUtils\xsubpp -typemap "C:\perl\5.14.1\l ib\ExtUtils\typemap" modSV.xs > modSV.xsc && C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command - e mv -- modSV.xsc modSV.c gcc -c -I"D:/soInline" -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_S YS -fno-strict-aliasing -mms-bitfields -s -O2 -DVERSION=\"0.00\" -DXS_VERSION=\"0.00\" "-IC:\perl\5.14.1\lib\MSW in32-x86-multi-thread\CORE" modSV.c Running Mkbootstrap for modSV () C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 modSV.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Mksymlists \ -e "Mksymlists('NAME'=>\"modSV\", 'DLBASE' => 'modSV', 'DL_FUNCS' => { }, 'FUNCLIST' => [], 'IMPORTS' => { }, 'DL _VARS' => []);" dlltool --def modSV.def --output-exp dll.exp g++ -o blib\arch\auto\modSV\modSV.dll -Wl,--base-file -Wl,dll.base -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thre ad\CORE" -L"C:\MinGW\lib" modSV.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp dlltool --def modSV.def --base-file dll.base --output-exp dll.exp g++ -o blib\arch\auto\modSV\modSV.dll -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE" -L"C:\MinGW\lib" mod SV.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool - lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 755 blib\arch\auto\modSV\modSV.dll C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e cp -- modSV.bs blib\arch\auto\modSV\modSV.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 blib\arch\auto\modSV\modSV.bs Finished "make" Stage Starting "make install" Stage Files found in blib\arch: installing files in blib\lib into architecture dependent library tree Installing D:\soInline\_Inline\lib\auto\modSV\modSV.bs Installing D:\soInline\_Inline\lib\auto\modSV\modSV.dll Finished "make install" Stage Starting Cleaning Up Stage Finished Cleaning Up Stage Finished Build Compile Stage SV = IV(0xc39248) at 0xc3924c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 123 SV = IV(0xc39248) at 0xc3924c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 1 </c> </spoiler> <p> subsequent runs don't "build" <p> unless the c-source changes <spoiler><c> $ perl -le " print qq{\n/* blah */\n\n} " >> modsv.c $ perl def.pl validate Stage Starting Build Preprocess Stage get_maps Stage Finished Build Preprocess Stage Starting Build Parse Stage Finished Build Parse Stage Starting Build Glue 1 Stage Finished Build Glue 1 Stage Starting Build Glue 2 Stage Finished Build Glue 2 Stage Starting Build Glue 3 Stage Finished Build Glue 3 Stage Starting Build Compile Stage Starting "perl Makefile.PL" Stage Writing Makefile for def_pl_4ff5 Writing MYMETA.yml and MYMETA.json Finished "perl Makefile.PL" Stage Starting "make" Stage C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe C:\perl\site\5.14.1\lib\ExtUtils\xsubpp -typemap "C:\perl\5.14.1\l ib\ExtUtils\typemap" def_pl_4ff5.xs > def_pl_4ff5.xsc && C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtil s::Command -e mv -- def_pl_4ff5.xsc def_pl_4ff5.c gcc -c -I"D:/soInline" -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_S YS -fno-strict-aliasing -mms-bitfields -s -O2 -DVERSION=\"0.00\" -DXS_VERSION=\"0.00\" "-IC:\perl\5.14.1\lib\MSW in32-x86-multi-thread\CORE" def_pl_4ff5.c Running Mkbootstrap for def_pl_4ff5 () C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 def_pl_4ff5.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Mksymlists \ -e "Mksymlists('NAME'=>\"def_pl_4ff5\", 'DLBASE' => 'def_pl_4ff5', 'DL_FUNCS' => { }, 'FUNCLIST' => [], 'IMPORTS' => { }, 'DL_VARS' => []);" dlltool --def def_pl_4ff5.def --output-exp dll.exp g++ -o blib\arch\auto\def_pl_4ff5\def_pl_4ff5.dll -Wl,--base-file -Wl,dll.base -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x8 6-multi-thread\CORE" -L"C:\MinGW\lib" def_pl_4ff5.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmo ldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2 _32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp dlltool --def def_pl_4ff5.def --base-file dll.base --output-exp dll.exp g++ -o blib\arch\auto\def_pl_4ff5\def_pl_4ff5.dll -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE" -L"C:\Mi nGW\lib" def_pl_4ff5.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmoldname -lkernel32 -luser32 -l gdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion - lodbc32 -lodbccp32 -lcomctl32 dll.exp C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 755 blib\arch\auto\def_pl_4ff5\def_ pl_4ff5.dll C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e cp -- def_pl_4ff5.bs blib\arch\auto\def_pl_4 ff5\def_pl_4ff5.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 blib\arch\auto\def_pl_4ff5\def_ pl_4ff5.bs Finished "make" Stage Starting "make install" Stage Files found in blib\arch: installing files in blib\lib into architecture dependent library tree Installing D:\soInline\_Inline\lib\auto\def_pl_4ff5\def_pl_4ff5.bs Installing D:\soInline\_Inline\lib\auto\def_pl_4ff5\def_pl_4ff5.dll Finished "make install" Stage Starting Cleaning Up Stage Finished Cleaning Up Stage Finished Build Compile Stage SV = IV(0x99aa48) at 0x99aa4c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 123 SV = IV(0x99aa48) at 0x99aa4c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 1 $ perl notdef.pl validate Stage Starting Build Preprocess Stage get_maps Stage Finished Build Preprocess Stage Starting Build Parse Stage Finished Build Parse Stage Starting Build Glue 1 Stage Finished Build Glue 1 Stage Starting Build Glue 2 Stage Finished Build Glue 2 Stage Starting Build Glue 3 Stage Finished Build Glue 3 Stage Starting Build Compile Stage Starting "perl Makefile.PL" Stage Writing Makefile for modSV Writing MYMETA.yml and MYMETA.json Finished "perl Makefile.PL" Stage Starting "make" Stage C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe C:\perl\site\5.14.1\lib\ExtUtils\xsubpp -typemap "C:\perl\5.14.1\l ib\ExtUtils\typemap" modSV.xs > modSV.xsc && C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command - e mv -- modSV.xsc modSV.c gcc -c -I"D:/soInline" -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_S YS -fno-strict-aliasing -mms-bitfields -s -O2 -DVERSION=\"0.00\" -DXS_VERSION=\"0.00\" "-IC:\perl\5.14.1\lib\MSW in32-x86-multi-thread\CORE" modSV.c Running Mkbootstrap for modSV () C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 modSV.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Mksymlists \ -e "Mksymlists('NAME'=>\"modSV\", 'DLBASE' => 'modSV', 'DL_FUNCS' => { }, 'FUNCLIST' => [], 'IMPORTS' => { }, 'DL _VARS' => []);" dlltool --def modSV.def --output-exp dll.exp g++ -o blib\arch\auto\modSV\modSV.dll -Wl,--base-file -Wl,dll.base -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thre ad\CORE" -L"C:\MinGW\lib" modSV.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp dlltool --def modSV.def --base-file dll.base --output-exp dll.exp g++ -o blib\arch\auto\modSV\modSV.dll -mdll -s -L"c:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE" -L"C:\MinGW\lib" mod SV.o C:\perl\5.14.1\lib\MSWin32-x86-multi-thread\CORE\libperl514.a -lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool - lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32 dll.exp C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 755 blib\arch\auto\modSV\modSV.dll C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e cp -- modSV.bs blib\arch\auto\modSV\modSV.bs C:\perl\5.14.1\bin\MSWin32-x86-multi-thread\perl.exe -MExtUtils::Command -e chmod -- 644 blib\arch\auto\modSV\modSV.bs Finished "make" Stage Starting "make install" Stage Files found in blib\arch: installing files in blib\lib into architecture dependent library tree Installing D:\soInline\_Inline\lib\auto\modSV\modSV.dll Finished "make install" Stage Starting Cleaning Up Stage Finished Cleaning Up Stage Finished Build Compile Stage SV = IV(0xc39248) at 0xc3924c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 123 SV = IV(0xc39248) at 0xc3924c REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 1 </c></spoiler> <p> The resulting directory structure <spoiler><c>$ tree -f -a _Inline _Inline |-- _Inline/build | `-- _Inline/build/modSV | |-- _Inline/build/modSV/INLINE.h | |-- _Inline/build/modSV/MYMETA.json | |-- _Inline/build/modSV/MYMETA.yml | |-- _Inline/build/modSV/Makefile | |-- _Inline/build/modSV/Makefile.PL | |-- _Inline/build/modSV/blib | | |-- _Inline/build/modSV/blib/arch | | | |-- _Inline/build/modSV/blib/arch/.exists | | | `-- _Inline/build/modSV/blib/arch/auto | | | `-- _Inline/build/modSV/blib/arch/auto/modSV | | | |-- _Inline/build/modSV/blib/arch/auto/modSV/.exists | | | |-- _Inline/build/modSV/blib/arch/auto/modSV/modSV.bs | | | `-- _Inline/build/modSV/blib/arch/auto/modSV/modSV.dll | | |-- _Inline/build/modSV/blib/bin | | | `-- _Inline/build/modSV/blib/bin/.exists | | |-- _Inline/build/modSV/blib/lib | | | |-- _Inline/build/modSV/blib/lib/.exists | | | `-- _Inline/build/modSV/blib/lib/auto | | | `-- _Inline/build/modSV/blib/lib/auto/modSV | | | `-- _Inline/build/modSV/blib/lib/auto/modSV/.exists | | |-- _Inline/build/modSV/blib/man1 | | | `-- _Inline/build/modSV/blib/man1/.exists | | |-- _Inline/build/modSV/blib/man3 | | | `-- _Inline/build/modSV/blib/man3/.exists | | `-- _Inline/build/modSV/blib/script | | `-- _Inline/build/modSV/blib/script/.exists | |-- _Inline/build/modSV/dll.base | |-- _Inline/build/modSV/dll.exp | |-- _Inline/build/modSV/modSV.bs | |-- _Inline/build/modSV/modSV.c | |-- _Inline/build/modSV/modSV.def | |-- _Inline/build/modSV/modSV.o | |-- _Inline/build/modSV/modSV.xs | |-- _Inline/build/modSV/modSV_def.old | `-- _Inline/build/modSV/pm_to_blib |-- _Inline/config-MSWin32-x86-multi-thread-5.014001 `-- _Inline/lib `-- _Inline/lib/auto |-- _Inline/lib/auto/def_pl_38b1 | |-- _Inline/lib/auto/def_pl_38b1/def_pl_38b1.bs | |-- _Inline/lib/auto/def_pl_38b1/def_pl_38b1.dll | `-- _Inline/lib/auto/def_pl_38b1/def_pl_38b1.inl |-- _Inline/lib/auto/def_pl_4ff5 | |-- _Inline/lib/auto/def_pl_4ff5/def_pl_4ff5.bs | |-- _Inline/lib/auto/def_pl_4ff5/def_pl_4ff5.dll | `-- _Inline/lib/auto/def_pl_4ff5/def_pl_4ff5.inl `-- _Inline/lib/auto/modSV |-- _Inline/lib/auto/modSV/.packlist |-- _Inline/lib/auto/modSV/modSV.bs |-- _Inline/lib/auto/modSV/modSV.dll `-- _Inline/lib/auto/modSV/modSV.inl 18 directories, 35 files </c></spoiler> <p> The _Inline/build directory usually gets cleaned up, but not for notdef.pl <p> notdef.pl also NAME's the module, so its name doesn't change, but def.pl doesn't NAME the module, so a name is derived from the filename (def.pl) and the md5 sum of the c-source code <spoiler> <c> $ cat _Inline\lib\auto\def_pl_4ff5\def_pl_4ff5.inl md5 : 4ff5a29496365b6167324b7d80efb321 name : def_pl_4ff5 version : "" language : C language_id : C installed : 0 date_compiled : Thu Nov 22 21:58:12 2012 inline_version : 0.5 ILSM : % module : Inline::C suffix : dll type : compiled Config : % apiversion : ? archname : MSWin32-x86-multi-thread cc : gcc ccflags : " -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -fno-strict-aliasing -mms-bitfields" ld : g++ osname : MSWin32 osvers : 5.1 so : dll version : 5.14.1 </c></spoiler> <p> Now, can two copies of notdef.pl run simultaneously? Lets see <p> First cleanup <c> $ rm -rfv _Inline </c> <p> And one copy will trip over the other and die , the other will continue normally <spoiler><c> $ perl -le " system 1, $^X, q,notdef.pl, for 1,2 " $ validate Stage Starting Build Preprocess Stage get_maps Stage Finished Build Preprocess Stage Starting Build Parse Stage validate Stage Starting Build Preprocess Stage get_maps Stage Finished Build Preprocess Stage Starting Build Parse Stage Finished Build Parse Stage Starting Build Glue 1 Stage Finished Build Parse Stage Starting Build Glue 1 Stage Finished Build Glue 1 Stage Starting Build Glue 2 Stage Finished Build Glue 2 Stage Starting Build Glue 3 Stage Finished Build Glue 1 Stage Starting Build Glue 2 Stage Finished Build Glue 2 Stage Starting Build Glue 3 Stage Finished Build Glue 3 Stage Starting Build Compile Stage Starting "perl Makefile.PL" Stage Finished Build Glue 3 Stage Starting Build Compile Stage Starting "perl Makefile.PL" Stage Writing Makefile for modSV Writing Makefile for modSV Writing MYMETA.yml and MYMETA.json Can't open Makefile for input: No such file or directory at notdef.pl line 8. BEGIN failed--compilation aborted at notdef.pl line 8. Writing MYMETA.yml and MYMETA.json Finished "perl Makefile.PL" Stage Starting "make" Stage ... </c></spoiler> <p> Now I'm not sure what scenario davido is talking about in the OP, but I hope this helps <P> FWIW, def.pl/notdef.pl are derived from [id://928011]/[id://989450] 1005169 1005212 5