9 files changed, 28 insertions, 0 deletions

diff --git a/Source/cmDocumentGeneratorExpressions.h b/Source/cmDocumentGeneratorExpressions.h
index 5d6553d..74c673a 100644
--- a/Source/cmDocumentGeneratorExpressions.h
+++ b/Source/cmDocumentGeneratorExpressions.h
@@ -18,6 +18,7 @@
   "Valid expressions are:\n"                                            \
   "  $<0:...>                  = empty string (ignores \"...\")\n"      \
   "  $<1:...>                  = content of \"...\"\n"                  \
+  "  $<CONFIG:cfg>             = '1' if config is \"cfg\", else '0'\n"  \
   "  $<CONFIGURATION>          = configuration name\n"                  \
   "  $<TARGET_FILE:tgt>        = main file (.exe, .so.1.2, .a)\n"       \
   "  $<TARGET_LINKER_FILE:tgt> = file used to link (.a, .lib, .so)\n"   \
diff --git a/Source/cmGeneratorExpression.cxx b/Source/cmGeneratorExpression.cxx
index ed33c7e..92bbf1d 100644
--- a/Source/cmGeneratorExpression.cxx
+++ b/Source/cmGeneratorExpression.cxx
@@ -14,6 +14,8 @@
 #include "cmMakefile.h"
 #include "cmTarget.h"
 
+#include <cmsys/String.h>
+
 //----------------------------------------------------------------------------
 cmGeneratorExpression::cmGeneratorExpression(
   cmMakefile* mf, const char* config,
@@ -25,6 +27,7 @@ cmGeneratorExpression::cmGeneratorExpression(
                            "_FILE(|_NAME|_DIR):" // Filename component.
                            "([A-Za-z0-9_.-]+)"   // Target name.
                            ">$");
+  this->TestConfig.compile("^\\$<CONFIG:([A-Za-z0-9_]*)>$");
 }
 
 //----------------------------------------------------------------------------
@@ -162,6 +165,12 @@ bool cmGeneratorExpression::Evaluate(const char* expr, std::string& result)
     {
     return cmGeneratorExpressionBool(expr+5, result, "OR", "0", "1");
     }
+  else if(this->TestConfig.find(expr))
+    {
+    result = cmsysString_strcasecmp(this->TestConfig.match(1).c_str(),
+                                    this->Config? this->Config:"") == 0
+      ? "1":"0";
+    }
   else
     {
     result = "Expression syntax not recognized.";
diff --git a/Source/cmGeneratorExpression.h b/Source/cmGeneratorExpression.h
index 1a9d4c6..a023eb0 100644
--- a/Source/cmGeneratorExpression.h
+++ b/Source/cmGeneratorExpression.h
@@ -51,6 +51,7 @@ private:
   std::vector<char> Data;
   std::stack<size_t> Barriers;
   cmsys::RegularExpression TargetInfo;
+  cmsys::RegularExpression TestConfig;
   std::set<cmTarget*> Targets;
   bool Evaluate();
   bool Evaluate(const char* expr, std::string& result);
diff --git a/Tests/GeneratorExpression/CMakeLists.txt b/Tests/GeneratorExpression/CMakeLists.txt
index 8d7d87d..2b135dc 100644
--- a/Tests/GeneratorExpression/CMakeLists.txt
+++ b/Tests/GeneratorExpression/CMakeLists.txt
@@ -12,6 +12,8 @@ add_custom_target(check ALL
     -Dtest_and_1=$<AND:1>
     -Dtest_and_1_0=$<AND:1,0>
     -Dtest_and_1_1=$<AND:1,1>
+    -Dtest_config_0=$<CONFIG:$<CONFIGURATION>x>
+    -Dtest_config_1=$<CONFIG:$<CONFIGURATION>>
     -Dtest_not_0=$<NOT:0>
     -Dtest_not_1=$<NOT:1>
     -Dtest_or_0=$<OR:0>
diff --git a/Tests/GeneratorExpression/check.cmake b/Tests/GeneratorExpression/check.cmake
index c40b847..e243d85 100644
--- a/Tests/GeneratorExpression/check.cmake
+++ b/Tests/GeneratorExpression/check.cmake
@@ -13,6 +13,8 @@ check(test_and_0_1 "0")
 check(test_and_1 "1")
 check(test_and_1_0 "0")
 check(test_and_1_1 "1")
+check(test_config_0 "0")
+check(test_config_1 "1")
 check(test_not_0 "1")
 check(test_not_1 "0")
 check(test_or_0 "0")
diff --git a/Tests/RunCMake/GeneratorExpression/BadCONFIG-result.txt b/Tests/RunCMake/GeneratorExpression/BadCONFIG-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/GeneratorExpression/BadCONFIG-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/GeneratorExpression/BadCONFIG-stderr.txt b/Tests/RunCMake/GeneratorExpression/BadCONFIG-stderr.txt
new file mode 100644
index 0000000..7c86b25
--- /dev/null
+++ b/Tests/RunCMake/GeneratorExpression/BadCONFIG-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error at BadCONFIG.cmake:1 \(add_custom_target\):
+  Error evaluating generator expression:
+
+    \$<CONFIG:.>
+
+  Expression syntax not recognized.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/GeneratorExpression/BadCONFIG.cmake b/Tests/RunCMake/GeneratorExpression/BadCONFIG.cmake
new file mode 100644
index 0000000..0c13f89
--- /dev/null
+++ b/Tests/RunCMake/GeneratorExpression/BadCONFIG.cmake
@@ -0,0 +1,3 @@
+add_custom_target(check ALL COMMAND check
+  $<CONFIG:.>
+  VERBATIM)
diff --git a/Tests/RunCMake/GeneratorExpression/RunCMakeTest.cmake b/Tests/RunCMake/GeneratorExpression/RunCMakeTest.cmake
index 95b16b3..ed18f25 100644
--- a/Tests/RunCMake/GeneratorExpression/RunCMakeTest.cmake
+++ b/Tests/RunCMake/GeneratorExpression/RunCMakeTest.cmake
@@ -1,5 +1,6 @@
 include(RunCMake)
 
+run_cmake(BadCONFIG)
 run_cmake(BadOR)
 run_cmake(BadAND)
 run_cmake(BadNOT)