=back
The Microsoft Visual C++ compilers are also now being given away free. They are
-available as "Visual C++ Toolkit 2003" or "Visual C++ 2005-2017 Express [or
+available as "Visual C++ Toolkit 2003" or "Visual C++ 2005-2019 Express [or
Community, from 2017] Edition" (and also as part of the ".NET Framework SDK")
and are the same compilers that ship with "Visual C++ .NET 2003 Professional"
-or "Visual C++ 2005-2017 Professional" respectively.
+or "Visual C++ 2005-2019 Professional" respectively.
This port can also be built on IA64/AMD64 using:
With the newer compilers, you may also use the older batch files if you choose
so.
-=item Microsoft Visual C++ 2008-2017 Express/Community Edition
+=item Microsoft Visual C++ 2008-2019 Express/Community Edition
-These free versions of Visual C++ 2008-2017 Professional contain the same
+These free versions of Visual C++ 2008-2019 Professional contain the same
compilers and linkers that ship with the full versions, and also contain
everything necessary to build Perl, rather than requiring a separate download
of the Windows SDK like previous versions did.
links to these packages has proven a pointless task because the links keep on
changing so often.)
-Install Visual C++ 2008-2017 Express/Community, then setup your environment
+Install Visual C++ 2008-2019 Express/Community, then setup your environment
using, e.g.
C:\Program Files\Microsoft Visual Studio 12.0\Common7\Tools\vsvars32.bat
(assuming the default installation location was chosen).
Perl should now build using the win32/Makefile. You will need to edit that
-file to set CCTYPE to one of MSVC90-MSVC141 first.
+file to set CCTYPE to one of MSVC90-MSVC142 first.
=item Microsoft Visual C++ 2005 Express Edition
L<http://www.mingw.org/>
L<http://www.mingw-w64.org/>
-You also need dmake. See L</"Make"> above on how to get it.
+You also need dmake or gmake. See L</"Make"> above on how to get it.
Note that the MinGW build currently requires a MinGW runtime version earlier
than 3.21 (check __MINGW32_MAJOR_VERSION and __MINGW32_MINOR_VERSION).
Experimental support for using Intel C++ Compiler has been added. Edit
win32/Makefile and pick the correct CCTYPE for the Visual C that Intel C was
installed into. Also uncomment __ICC to enable Intel C on Visual C support.
-To set up the build enviroment, from the Start Menu run
+To set up the build environment, from the Start Menu run
IA-32 Visual Studio 20__ mode or Intel 64 Visual Studio 20__ mode as
appropriate. Then run nmake as usually in that prompt box.
Make sure you are in the "win32" subdirectory under the perl toplevel.
This directory contains a "Makefile" that will work with
versions of nmake that come with Visual C++ or the Windows SDK, and
-a dmake "makefile.mk" that will work for all supported compilers. The
-defaults in the dmake makefile are setup to build using MinGW/gcc.
+a GNU make "GNUmakefile" or dmake "makefile.mk" that will work for all
+supported compilers. The defaults in the gmake and dmake makefile are
+setup to build using MinGW/gcc.
=item *
-Edit the makefile.mk (or Makefile, if you're using nmake) and change
-the values of INST_DRV and INST_TOP. You can also enable various
-build flags. These are explained in the makefiles.
+Edit the GNUmakefile, makefile.mk (or Makefile, if you're using nmake)
+and change the values of INST_DRV and INST_TOP. You can also enable
+various build flags. These are explained in the makefiles.
Note that it is generally not a good idea to try to build a perl with
INST_DRV and INST_TOP set to a path that already exists from a previous
=item *
-Type "dmake" (or "nmake" if you are using that make).
+Type "dmake" ("gmake" for GNU make, or "nmake" if you are using that make).
This should build everything. Specifically, it will create perl.exe,
-perl529.dll at the perl toplevel, and various other extension dll's
+perl531.dll at the perl toplevel, and various other extension dll's
under the lib\auto directory. If the build fails for any reason, make
sure you have done the previous steps correctly.
run in parallel, but there are serialization points where you will see just 1
CPU maxed out. This is normal.
+Similarly you can build in parallel with GNU make, type "gmake -j2" to
+build with two parallel jobs, or higher for more.
+
If you are advanced enough with building C code, here is a suggestion to speed
-up building perl, and the later C<make test>. Try to keep your PATH enviromental
+up building perl, and the later C<make test>. Try to keep your PATH environmental
variable with the least number of folders possible (remember to keep your C
compiler's folders there). C<C:\WINDOWS\system32> or C<C:\WINNT\system32>
depending on your OS version should be first folder in PATH, since "cmd.exe"
=head2 Testing Perl on Windows
-Type "dmake test" (or "nmake test"). This will run most of the tests from
-the testsuite (many tests will be skipped).
+Type "dmake test" (or "gmake test", "nmake test"). This will run most
+of the tests from the testsuite (many tests will be skipped).
There should be no test failures.
if you need fixed C<stat> and C<utime> functions then have a look at the
CPAN distribution Win32::UTCFileTime.
+If you build with Visual C++ 2015 or later then F<ext/XS-APItest/t/locale.t>
+may crash (after all its tests have passed). This is due to a regression in the
+Universal CRT introduced in the Windows 10 April 2018 Update, and will be fixed
+in the May 2019 Update, as explained here: L<https://developercommunity.visualstudio.com/content/problem/519486/setlocalelc-numeric-iso-latin-16-fails-then-succee.html>.
+
If you build with certain versions (e.g. 4.8.1) of gcc from www.mingw.org then
F<ext/POSIX/t/time.t> may fail test 17 due to a known bug in those gcc builds:
see L<http://sourceforge.net/p/mingw/bugs/2152/>.
ones and makes tests fail. Remove them from your path while testing to
avoid these errors.
+To see the output of specific failing tests run the harness from the t
+directory:
+
+ # assuming you're starting from the win32 directory
+ cd ..\win32
+ .\perl harness <list of tests>
+
Please report any other failures as described under L</BUGS AND CAVEATS>.
=head2 Installation of Perl on Windows
-Type "dmake install" (or "nmake install"). This will put the newly
-built perl and the libraries under whatever C<INST_TOP> points to in the
-Makefile. It will also install the pod documentation under
-C<$INST_TOP\$INST_VER\lib\pod> and HTML versions of the same under
-C<$INST_TOP\$INST_VER\lib\pod\html>.
+Type "dmake install" (or "gmake install", "nmake install"). This will
+put the newly built perl and the libraries under whatever C<INST_TOP>
+points to in the Makefile. It will also install the pod documentation
+under C<$INST_TOP\$INST_VER\lib\pod> and HTML versions of the same
+under C<$INST_TOP\$INST_VER\lib\pod\html>.
To use the Perl you just installed you will need to add a new entry to
your PATH environment variable: C<$INST_TOP\bin>, e.g.
L<http://www.cpan.org/modules/by-module/Make/>
-You may also use dmake. See L</"Make"> above on how to get it.
+You may also use dmake or gmake. See L</"Make"> above on how to get it.
Note that MakeMaker actually emits makefiles with different syntax
depending on what 'make' it thinks you are using. Therefore, it is
Support for 64-bit Windows added in 5.8 (ActiveState Corp).
-Last updated: 23 May 2018
+Last updated: 30 April 2019
=cut