diff options
author | dcommander <dcommander@3789f03b-4d11-0410-bbf8-ca57d06f2519> | 2010-02-25 06:21:12 +0000 |
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committer | dcommander <dcommander@3789f03b-4d11-0410-bbf8-ca57d06f2519> | 2010-02-25 06:21:12 +0000 |
commit | 554995a68eae51ea5f64c331c731d0684dba2488 (patch) | |
tree | 8ba0d23d50ad1132ebf778d79e237afeff2546ca /trunk/README-turbo.txt | |
parent | 0d09ca4e928672d387a80a3d1b70dc91c24f6f10 (diff) |
Clarify the DLL hell problem
git-svn-id: https://libjpeg-turbo.svn.sourceforge.net/svnroot/libjpeg-turbo@154 3789f03b-4d11-0410-bbf8-ca57d06f2519
Diffstat (limited to 'trunk/README-turbo.txt')
-rwxr-xr-x | trunk/README-turbo.txt | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/trunk/README-turbo.txt b/trunk/README-turbo.txt index 4704114..f60454c 100755 --- a/trunk/README-turbo.txt +++ b/trunk/README-turbo.txt @@ -65,7 +65,7 @@ links to the libjpeg dynamic library located in /opt/libjpeg-turbo/{lib}. This will effectively accelerate every dynamically linked libjpeg application on the system. -The Windows version of libjpeg-turbo installs jpeg62.dll into +The Windows distribution of the libjpeg-turbo SDK installs jpeg62.dll into c:\libjpeg-turbo\bin, and the PATH environment variable can be modified such that this directory is searched before any others that might contain jpeg62.dll. However, if jpeg62.dll also exists in an application's install @@ -74,11 +74,17 @@ if an application ships with jpeg62.dll, then back up the application's version of jpeg62.dll and copy c:\libjpeg-turbo\bin\jpeg62.dll into the application's install directory to accelerate it. -libjpeg-turbo's version of jpeg62.dll requires the Visual C++ 2008 C run time -DLL (msvcr90.dll). This library ships with more recent versions of Windows, -but users of older versions can obtain it from the Visual C++ 2008 -Redistributable Package, which is available as a free download from Microsoft's -web site. +The version of jpeg62.dll distributed in the libjpeg-turbo SDK requires the +Visual C++ 2008 C run time DLL (msvcr90.dll). This library ships with more +recent versions of Windows, but users of older versions can obtain it from the +Visual C++ 2008 Redistributable Package, which is available as a free download +from Microsoft's web site. + +NOTE: Features of libjpeg which require passing a C run time structure, such +as a file handle, from an application to libjpeg will probably not work with +the distributed version of jpeg62.dll unless the application is also built to +use the Visual C++ 2008 C run time DLL. In particular, this affects +jpeg_stdio_dest() and jpeg_stdio_src(). Mac applications typically embed their own copies of libjpeg.62.dylib inside the (hidden) application bundle, so it is not possible to globally replace |