Merge topic 'minor-cleanups'

84fac67 Don't allow include() of export(EXPORT) file at configure time.
faedd2b cmTarget: Fix system include annotation propagation.
9eb06d0 add_library: Disallow invalid signatures for INTERFACE_LIBRARY.
10d65d5 cmTarget: Move a variable initialization closer to where it is used.
0f3e8e9 Undefine local preprocessor loop variables.
9ba47ee Genex: Reform error-checking for nullary/unary expressions.
fa651c7 cmTarget: Remove some of the INTERFACE_LIBRARY whitelisted properties.
61d138a cmTarget: INTERFACE_LIBRARY is always EXCLUDE_FROM_ALL.
3429541 export: Rename some variables to reflect content type.
7461d67 cmTarget: Enable convenient include dir handling for INTERFACE_LIBRARY.
7fc6e3d cmTarget: Remove dead code.
2af966d Genex: Add EQUAL expression.
2d66380 cmTarget: Use strtol for numeric parsing.

5 files changed, 27 insertions, 2 deletions

diff --git a/Tests/InterfaceLibrary/CMakeLists.txt b/Tests/InterfaceLibrary/CMakeLists.txt
index 8154ced..b396eb6 100644
--- a/Tests/InterfaceLibrary/CMakeLists.txt
+++ b/Tests/InterfaceLibrary/CMakeLists.txt
@@ -6,13 +6,15 @@ project(InterfaceLibrary)
 add_library(iface_nodepends INTERFACE)
 target_compile_definitions(iface_nodepends INTERFACE IFACE_DEFINE)
 
+add_subdirectory(headerdir)
+
 add_executable(InterfaceLibrary definetestexe.cpp)
-target_link_libraries(InterfaceLibrary iface_nodepends)
+target_link_libraries(InterfaceLibrary iface_nodepends headeriface)
 
 add_subdirectory(libsdir)
 
 add_executable(sharedlibtestexe sharedlibtestexe.cpp)
-target_link_libraries(sharedlibtestexe shared_iface)
+target_link_libraries(sharedlibtestexe shared_iface imported::iface)
 
 add_library(broken EXCLUDE_FROM_ALL broken.cpp)
 
diff --git a/Tests/InterfaceLibrary/definetestexe.cpp b/Tests/InterfaceLibrary/definetestexe.cpp
index decd37c..e7a10c1 100644
--- a/Tests/InterfaceLibrary/definetestexe.cpp
+++ b/Tests/InterfaceLibrary/definetestexe.cpp
@@ -3,6 +3,18 @@
 #error Expected IFACE_DEFINE
 #endif
 
+#include "iface_header.h"
+
+#ifndef IFACE_HEADER_SRCDIR
+#error Expected IFACE_HEADER_SRCDIR
+#endif
+
+#include "iface_header_builddir.h"
+
+#ifndef IFACE_HEADER_BUILDDIR
+#error Expected IFACE_HEADER_BUILDDIR
+#endif
+
 int main(int,char**)
 {
   return 0;
diff --git a/Tests/InterfaceLibrary/headerdir/CMakeLists.txt b/Tests/InterfaceLibrary/headerdir/CMakeLists.txt
new file mode 100644
index 0000000..98f521e
--- /dev/null
+++ b/Tests/InterfaceLibrary/headerdir/CMakeLists.txt
@@ -0,0 +1,8 @@
+
+set(CMAKE_INCLUDE_CURRENT_DIR_IN_INTERFACE ON)
+
+add_library(headeriface INTERFACE)
+
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/iface_header_builddir.h"
+  "#define IFACE_HEADER_BUILDDIR\n"
+)
diff --git a/Tests/InterfaceLibrary/headerdir/iface_header.h b/Tests/InterfaceLibrary/headerdir/iface_header.h
new file mode 100644
index 0000000..82dd157
--- /dev/null
+++ b/Tests/InterfaceLibrary/headerdir/iface_header.h
@@ -0,0 +1 @@
+#define IFACE_HEADER_SRCDIR
diff --git a/Tests/InterfaceLibrary/libsdir/CMakeLists.txt b/Tests/InterfaceLibrary/libsdir/CMakeLists.txt
index 6999646..4e529df 100644
--- a/Tests/InterfaceLibrary/libsdir/CMakeLists.txt
+++ b/Tests/InterfaceLibrary/libsdir/CMakeLists.txt
@@ -24,3 +24,5 @@ target_compile_definitions(shareddependlib
 
 add_library(shared_iface INTERFACE)
 target_link_libraries(shared_iface INTERFACE sharedlib)
+
+add_library(imported::iface INTERFACE IMPORTED GLOBAL)