Add a test for the new --find-package mode

Alex

Tests/CMakeLists.txt

@@ -46,6 +46,8 @@ IF(BUILD_TESTING)
 
   ADD_SUBDIRECTORY(CMakeLib)
 
+  ADD_SUBDIRECTORY(FindPackageModeMakefileTest)
+
   # Collect a list of all test build directories.
   SET(TEST_BUILD_DIRS)
 

Tests/FindPackageModeMakefileTest/CMakeLists.txt

@@ -0,0 +1,22 @@
+
+if("${CMAKE_CXX_COMPILER_ID}" MATCHES GNU
+  OR "${CMAKE_CXX_COMPILER_ID}" MATCHES Intel
+  OR "${CMAKE_CXX_COMPILER_ID}" MATCHES Clang
+  OR "${CMAKE_CXX_COMPILER_ID}" MATCHES XL
+  OR "${CMAKE_CXX_COMPILER_ID}" MATCHES SunPro)
+
+  find_package(PNG)
+
+  # the test program links against the png lib, so test first whether it exists
+  if(PNG_FOUND)
+
+    get_target_property(cmakeExecutable cmake LOCATION)
+
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Makefile.in ${CMAKE_CURRENT_BINARY_DIR}/ConfMakefile @ONLY)
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/main.cpp ${CMAKE_CURRENT_BINARY_DIR}/main.cpp COPYONLY)
+
+    add_test(FindPackageModeMakefileTest ${CMAKE_MAKE_PROGRAM} -f ${CMAKE_CURRENT_BINARY_DIR}/ConfMakefile -C ${CMAKE_CURRENT_BINARY_DIR} )
+
+  endif()
+
+endif()

Tests/FindPackageModeMakefileTest/Makefile.in

@@ -0,0 +1,8 @@
+all: clean pngtest
+
+pngtest: main.o
+	"@CMAKE_CXX_COMPILER@" -c `"@cmakeExecutable@" --find-package -DNAME=PNG -DLANGUAGE=CXX -DCOMPILER_ID=@CMAKE_CXX_COMPILER_ID@ -DMODE=COMPILE` main.cpp
+	"@CMAKE_CXX_COMPILER@" -o pngtest main.o `"@cmakeExecutable@" --find-package -DNAME=PNG -DLANGUAGE=CXX -DCOMPILER_ID=@CMAKE_CXX_COMPILER_ID@ -DMODE=LINK`
+
+clean:
+	rm -f *.o pngtest

Tests/FindPackageModeMakefileTest/main.cpp

@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include <png.h>
+
+int main()
+{
+ printf("PNG copyright: %s\n", png_get_copyright(NULL));
+ return 0;
+}