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add Win32 USE_NO_REGISTRY build option
-the first arg of win32_get_privlib is not used if the registry is not
queried, create a macro to allow the arg to drop out on WIN32_NO_REGISTRY
builds for efficiency and not to have unused C litteral strings in the
binary
-This patch changes the ABI of
PerlEnv_lib_path/PerlEnvLibPath/win32_get_privlib between USE_NO_REGISTRY
and no USE_NO_REGISTRY. Since win32_get_privlib is not exported from
perl523.dll, assume it and PerlEnv_lib_path are not public API, note
technically PerlEnv_lib_path will be callable only on PERL_IMPLICIT_SYS
builds, on no PERL_IMPLICIT_SYS builds it will fail at link time since
win32_get_privlib isnt exported. Therefore place it in
non-[affecting]-binary compatibility even though it does affect binary
compatibility.
-delay load advapi32.dll to save startup time (loading the DLL and the DLL
calling its initializers in DllMain) and one 4 KB memory page for
advapi32's .data section (doing "perl -E"sleep 100" on WinXP shows
advapi32 has a 20KB long .data section, first 4 KB are unique to the
process, the remaining 16KB are COW shared between processes according
to vmmap tool), putting a DebugBreak() in pp_getlogin and doing a
"nmake all" shows miniperl never calls getlogin during the build process.
An nmake test shows only ext/POSIX/t/wrappers.t and lib/warnings.t execute
pp_getlogin. Keeping advapi32.dll out of the perl process requires
removing comctl32.dll, since comctrl32.dll loads advapi32.dll, from perl
which I always do as a custom patch.
filed as [perl #123658]
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