Splendid!

I've attached a patch to RT #49433, which should fix that build issue when it's applied. At least, that patch works for me on Windows 10 with a sh.exe in a directory listed in $ENV{PATH}. Where, by "works" I mean that the Build.PL bails out with an error message instructing me to edit $ENV{PATH}.

From d64302f8b45901d2b91b9f813f8c4de76cad1714 Mon Sep 17 00:00:00 2001
From: Max Maischein <corion@corion.net>
Date: Tue, 27 Aug 2019 00:31:28 +0200
Subject: [PATCH] Bail out of building if sh.exe or cc1.exe are found o
+n the
 path

This addresses # RT #49433 , RT #62451

The workaround is to adjust $PATH / $ENV{PATH} to exclude directories
in which sh.exe or cc1.exe is found. Another workaround is to set
$ENV{WX_IGNOREPATH} to a true value to disable this check.
---
 Build.PL | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 mode change 100755 => 100644 Build.PL

diff --git a/Build.PL b/Build.PL
old mode 100755
new mode 100644
index b0728a2..38046e0
--- a/Build.PL
+++ b/Build.PL
@@ -226,6 +226,33 @@ $build->notes( 'userpatch' => $build->args('wxWid
+gets-userpatch') || '' );
 $build->notes( 'graphicscontext' => $build->args('wxWidgets-graphicsc
+ontext') );
 
 if( $build_wx ) {
+    # RT #49433 , RT #62451
+    if( $^O eq 'MSWin32' ) {
+        my @problematic = (qw(sh.exe cc1.exe));
+        my @problematic_path = map { My::Build::Base->awx_path_search
+( $_ ) } @problematic;
+                               My::Build::Base->awx_path_search( 'cc1
+.exe' ),
+                            ;
+        if( @problematic_path and not $ENV{WX_IGNOREPATH} ) {
+            local $" = "\n";
+            print <<EOT;
+The following programs were found in \$ENV{PATH}, and will break the 
+build:
+@problematic_path
+
+PATH is
+
+$ENV{PATH}
+
+Please edit \$ENV{PATH} so these programs are not in it anymore and r
+estart the
+installation. Alternatively, set \$ENV{WX_IGNOREPATH} to a true value
+ and
+restart the installation:
+
+    set WX_IGNOREPATH=1
+
+EOT
+            exit 1;
+        }
+    };
+
     $wx_version = _askmulti( $build, 'wxWidgets-version',
                              'Which wxWidgets version?',
                              [ sort keys %VERSIONS ], $DEFAULT_VERSIO
+N );
-- 
2.22.0.windows.1
[download]

That approach looks sound to me.

This talks about it https://wiki.wxwidgets.org/Compiling_wxWidgets_with_MinGW#Troubleshooting

I imagine making sure Build.bat sets SHELL=cmd.exe AND appropriate %PATH% is better than annoying users :)

That approach looks sound to me.

Its better than nothing, and better late than never,

But we can do better than a copout from so many years ago

I imagine this is relevant portion but I havent built a wxWidgets in years

If you could check your logs please

Alien-wxWidgets-0.64\inc\My\Build\Any_wx_config.pm
sub build_wxwidgets {
    my $self = shift;
    my $extra_flags = $self->wxwidgets_configure_extra_flags;
    my $prefix_dir = $self->_key;
    my $prefix = awx_install_arch_dir( $self, $prefix_dir );
    my $opengl = $self->notes( 'build_wx_opengl' );
    my $args = sprintf '--with-%s %s--disable-compat24',
                       $self->awx_build_toolkit,
                       $opengl ? '--with-opengl ' : '';
    my $unicode = $self->awx_is_unicode ? 'enable' : 'disable';
    my $debug = '';
    
    if( $self->awx_version_type == 2 ) {
        $debug = ( $self->awx_debug ) ? '--enable-debug' : '--disable-
+debug';
    } else {
        $debug = ( $self->awx_debug ) ? '--enable-debug=max' : '';
    }

    my $monolithic = $self->awx_is_monolithic ? 'enable' : 'disable';
    my $universal = $self->awx_is_universal ? 'enable' : 'disable';
    my $dir = $self->notes( 'build_data' )->{data}{directory};
    my $cmd = "echo exit | " . # for OS X 10.3...
              "sh ../configure --prefix=$prefix $args --$unicode-unico
+de"
            . " $debug --$monolithic-monolithic"
            . " --$universal-universal_binary $extra_flags";
[download]