From bdf8e186e5084020a4cbbbe9aa2f63af0febf4ff Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 5 Oct 2006 16:59:46 -0400
Subject: BUG: Need to match shared library names before static because some
 platforms have static name patterns that match their shared patterns but not
 vice versa.  This is needed for implementing bug#1644 on cygwin.

---
 Source/cmLocalGenerator.cxx       |  8 ++++++--
 Source/cmOrderLinkDirectories.cxx | 35 ++++++++++++++++++++++-------------
 2 files changed, 28 insertions(+), 15 deletions(-)

diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 84b4902..545b4ca 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -1716,6 +1716,12 @@ void cmLocalGenerator
     this->Makefile->GetDefinition("CMAKE_STATIC_LIBRARY_PREFIX"));
   orderLibs.AddLinkPrefix(
     this->Makefile->GetDefinition("CMAKE_SHARED_LIBRARY_PREFIX"));
+
+  // Import library names should be matched and treated as shared
+  // libraries for the purposes of linking.
+  orderLibs.AddLinkExtension(
+    this->Makefile->GetDefinition("CMAKE_IMPORT_LIBRARY_SUFFIX"),
+    cmOrderLinkDirectories::LinkShared);
   orderLibs.AddLinkExtension(
     this->Makefile->GetDefinition("CMAKE_STATIC_LIBRARY_SUFFIX"),
     cmOrderLinkDirectories::LinkStatic);
@@ -1723,8 +1729,6 @@ void cmLocalGenerator
     this->Makefile->GetDefinition("CMAKE_SHARED_LIBRARY_SUFFIX"),
     cmOrderLinkDirectories::LinkShared);
   orderLibs.AddLinkExtension(
-    this->Makefile->GetDefinition("CMAKE_IMPORT_LIBRARY_SUFFIX"));
-  orderLibs.AddLinkExtension(
     this->Makefile->GetDefinition("CMAKE_LINK_LIBRARY_SUFFIX"));
   if(const char* linkSuffixes =
      this->Makefile->GetDefinition("CMAKE_EXTRA_LINK_EXTENSIONS"))
diff --git a/Source/cmOrderLinkDirectories.cxx b/Source/cmOrderLinkDirectories.cxx
index fe00ec2..fb25711 100644
--- a/Source/cmOrderLinkDirectories.cxx
+++ b/Source/cmOrderLinkDirectories.cxx
@@ -267,19 +267,17 @@ void cmOrderLinkDirectories::PrepareLinkTargets()
   for(std::vector<cmStdString>::iterator i = originalLinkItems.begin();
       i != originalLinkItems.end(); ++i)
     {
-    // separate the library name from libfoo.a or foo.a
-    if(this->ExtractStaticLibraryName.find(*i))
-      {
-#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
-      fprintf(stderr, "static regex matched [%s] [%s] [%s]\n",
-              this->ExtractStaticLibraryName.match(1).c_str(),
-              this->ExtractStaticLibraryName.match(2).c_str(),
-              this->ExtractStaticLibraryName.match(3).c_str());
-#endif
-      this->SetCurrentLinkType(LinkStatic);
-      this->LinkItems.push_back(this->ExtractStaticLibraryName.match(2));
-      }
-    else if(this->ExtractSharedLibraryName.find(*i))
+    // Parse out the prefix, base, and suffix components of the
+    // library name.  If the name matches that of a shared or static
+    // library then set the link type accordingly.
+    //
+    // Search for shared library names first because some platforms
+    // have shared libraries with names that match the static library
+    // pattern.  For example cygwin and msys use the convention
+    // libfoo.dll.a for import libraries and libfoo.a for static
+    // libraries.  On AIX a library with the name libfoo.a can be
+    // shared!
+    if(this->ExtractSharedLibraryName.find(*i))
       {
 #ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
       fprintf(stderr, "shared regex matched [%s] [%s] [%s]\n",
@@ -290,6 +288,17 @@ void cmOrderLinkDirectories::PrepareLinkTargets()
       this->SetCurrentLinkType(LinkShared);
       this->LinkItems.push_back(this->ExtractSharedLibraryName.match(2));
       }
+    else if(this->ExtractStaticLibraryName.find(*i))
+      {
+#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
+      fprintf(stderr, "static regex matched [%s] [%s] [%s]\n",
+              this->ExtractStaticLibraryName.match(1).c_str(),
+              this->ExtractStaticLibraryName.match(2).c_str(),
+              this->ExtractStaticLibraryName.match(3).c_str());
+#endif
+      this->SetCurrentLinkType(LinkStatic);
+      this->LinkItems.push_back(this->ExtractStaticLibraryName.match(2));
+      }
     else if(this->ExtractAnyLibraryName.find(*i))
       {
 #ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
-- 
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