纠正“无法打开共享对象文件”错误，但在Cygwin中报告了不正确的文件？

问题描述

在Cygwin中，出于问题cygA.dll和cygB.dll（还有更多，但此处不相关）的问题，我有一个链接到共享库的可执行文件。据我所知，应该将PATH用于cygA.dll在Cygwin中的共享库路径。然后，我尝试运行可执行文件，并期望找不到cygB.dll的错误。令我惊讶的是，我得到了error while loading shared libraries: cygA.dll: cannot open shared object file: No such file or directory

用ldd检查没有显示任何.dll条目，但是cygcheck正确报告了cygcheck: track_down: could not find cygB.dll

我还有一个具有指向cygA.dll的相同共享链接的不同可执行文件，该文件没有问题。 在将cygA.dll的路径放在PATH上后，我的新可执行文件也可以正常运行。因此Cygwin找不到cygB.dll，但错误地将cygA.dll报告为丢失的那个。这对于一个大型项目可能会很痛苦... 这是预期的行为还是错误 ？在后一种情况下，存在什么错误？我应该向Cygwin报告吗？

解决方法

如果cygwin缺少二级DLL，则只能看到加载一级DLL的失败。 Windows无法传递信息

您可以使用strace获得相关信息 EG：

<MenuItem x:Name="tesst" Header="nane" >
    <MenuItem.Template>
        <ControlTemplate TargetType="{x:Type MenuItem}">
            <Border x:Name="templateRoot" SnapsToDevicePixels="true"
                    BorderThickness="{TemplateBinding Control.BorderThickness}"
                    Background="{TemplateBinding Control.Background}"
                    BorderBrush="{TemplateBinding Control.BorderBrush}">
                <Grid VerticalAlignment="Center">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition Width="Auto"/>
                    </Grid.ColumnDefinitions>
                    <ContentPresenter x:Name="Icon" ContentSource="Icon"
                          SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" VerticalAlignment="Center"
                          HorizontalAlignment="Center" Width="16" Height="16" Margin="3"/>
                    <Path x:Name="GlyphPanel" Data="M 0,0 L 4,3.5 L 0,7 Z" FlowDirection="LeftToRight" Margin="3"
                          Visibility="Collapsed" VerticalAlignment="Center" Fill="{TemplateBinding Control.Foreground}"/>
                    <ContentPresenter Grid.Column="1" ContentSource="Header" RecognizesAccessKey="true"
                          Margin="{TemplateBinding Control.Padding}"
                          SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}"/>
                    <Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false"
                           PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}"
                           Placement="Bottom"
                           IsOpen="{Binding IsSubmenuOpen,RelativeSource={RelativeSource TemplatedParent}}"
                           PlacementTarget="{Binding ElementName=templateRoot}">
                        <Border x:Name="SubMenuBorder" Background="#FFF0F0F0" BorderBrush="#FF999999" BorderThickness="1" Padding="2">
                            <ScrollViewer x:Name="SubMenuScrollViewer" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer,TypeInTargetAssembly={x:Type FrameworkElement}}}">
                                <Grid RenderOptions.ClearTypeHint="Enabled">
                                    <Canvas Height="0" Width="0" HorizontalAlignment="Left" VerticalAlignment="Top">
                                        <Rectangle Name="OpaqueRect" Height="{Binding ElementName=SubMenuBorder,Path=ActualHeight}"
                                                   Width="{Binding ElementName=SubMenuBorder,Path=ActualWidth}"
                                                   Fill="{Binding ElementName=SubMenuBorder,Path=Background}"/>
                                    </Canvas>
                                    <Rectangle HorizontalAlignment="Left" Width="0" Margin="29,2,2" Fill="#FFD7D7D7"/>
                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Cycle"
                                                    KeyboardNavigation.TabNavigation="Cycle" Grid.IsSharedSizeScope="true"
                                                    SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}"/>
                                </Grid>
                            </ScrollViewer>
                        </Border>
                    </Popup>
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="MenuItem.IsSuspendingPopupAnimation" Value="true">
                    <Setter TargetName="PART_Popup" Property="Popup.PopupAnimation" Value="None"/>
                </Trigger>
                <Trigger Value="{x:Null}" Property="MenuItem.Icon">
                    <Setter TargetName="Icon" Property="UIElement.Visibility" Value="Collapsed"/>
                </Trigger>
                <Trigger Property="MenuItem.IsChecked" Value="true">
                    <Setter TargetName="GlyphPanel" Property="UIElement.Visibility" Value="Visible"/>
                    <Setter TargetName="Icon" Property="UIElement.Visibility" Value="Collapsed"/>
                </Trigger>
                <Trigger Property="MenuItem.IsHighlighted" Value="true">
                    <Setter TargetName="templateRoot" Value="#3D26A0DA" Property="Border.Background"/>
                    <Setter TargetName="templateRoot" Value="#FF26A0DA" Property="Border.BorderBrush"/>
                </Trigger>
                <Trigger Property="UIElement.IsEnabled" Value="false">
                    <Setter TargetName="templateRoot" Value="#FF707070" Property="TextElement.Foreground"/>
                    <Setter TargetName="GlyphPanel" Value="#FF707070" Property="Shape.Fill"/>
                </Trigger>
                <Trigger SourceName="SubMenuScrollViewer" Property="ScrollViewer.CanContentScroll" Value="false">
                    <Setter TargetName="OpaqueRect" Value="{Binding ElementName=SubMenuScrollViewer,Path=VerticalOffset}" Property="Canvas.Top"/>
                    <Setter TargetName="OpaqueRect" Value="{Binding ElementName=SubMenuScrollViewer,Path=HorizontalOffset}" Property="Canvas.Left"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </MenuItem.Template>
    <MenuItem.ItemsPanel>
     ...

但是Windows正确提供了弹出信息：