export(): Process the export() command at generate time.

Make the API for adding targets string based so that it can easily
use cmGeneratorTarget.

Teach the cmIncludeCommand to generate the exported file at
configure-time instead if it is to be include()d.

The RunCMake.ExportWithoutLanguage test now needs a dummy header.h
file as expected error from export() is now reported after the
missing file error.

3 files changed, 4 insertions, 4 deletions

diff --git a/Tests/RunCMake/CMP0022/CMP0022-export-stderr.txt b/Tests/RunCMake/CMP0022/CMP0022-export-stderr.txt
index ae7627e..405dd8d 100644
--- a/Tests/RunCMake/CMP0022/CMP0022-export-stderr.txt
+++ b/Tests/RunCMake/CMP0022/CMP0022-export-stderr.txt
@@ -1,4 +1,4 @@
-CMake Error at CMP0022-export.cmake:11 \(export\):
+CMake Error in CMakeLists.txt:
   Target "cmp0022NEW" has policy CMP0022 enabled, but also has old-style
   LINK_INTERFACE_LIBRARIES properties populated, but it was exported without
   the EXPORT_LINK_INTERFACE_LIBRARIES to export the old-style properties
diff --git a/Tests/RunCMake/ExportWithoutLanguage/NoLanguage-stderr.txt b/Tests/RunCMake/ExportWithoutLanguage/NoLanguage-stderr.txt
index 67a0ae3..5658d85 100644
--- a/Tests/RunCMake/ExportWithoutLanguage/NoLanguage-stderr.txt
+++ b/Tests/RunCMake/ExportWithoutLanguage/NoLanguage-stderr.txt
@@ -1,6 +1,4 @@
 CMake Error: CMake can not determine linker language for target: NoLanguage
-CMake Error at NoLanguage.cmake:2 \(export\):
+CMake Error in CMakeLists.txt:
   Exporting the target "NoLanguage" is not allowed since its linker language
   cannot be determined
-Call Stack \(most recent call first\):
-  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/ExportWithoutLanguage/header.h b/Tests/RunCMake/ExportWithoutLanguage/header.h
new file mode 100644
index 0000000..0c803ed
--- /dev/null
+++ b/Tests/RunCMake/ExportWithoutLanguage/header.h
@@ -0,0 +1,2 @@
+
+enum some_compilers { need_more_than_nothing };