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# this test creates a static library and an executable
# the source to the library is then changed
# and the build is done on the executable and if things
# are working the executable should relink with the new
# value. The subdir Project contains the CMakelists.txt
# and source files for the test project.
cmake_minimum_required (VERSION 2.6)
project(BuildDepends)
# This entire test takes place during the initial
# configure step. It should not run again when the
# project is built.
set(CMAKE_SUPPRESS_REGENERATION 1)
# Xcode needs some help with the fancy dependencies in this test.
if("${CMAKE_GENERATOR}" MATCHES "Xcode")
set(HELP_XCODE 1)
endif()
function(help_xcode_depends)
if(HELP_XCODE)
file(GLOB_RECURSE MACRO_OBJS
${BuildDepends_BINARY_DIR}/Project/zot_macro_*.o*
)
if(MACRO_OBJS)
message("Helping Xcode by removing objects [${MACRO_OBJS}]")
file(REMOVE ${MACRO_OBJS})
endif()
endif()
endfunction()
if("${CMAKE_GENERATOR}" MATCHES "Ninja")
set(HELP_NINJA 1) # TODO Why is this needed?
endif()
# The Intel compiler causes the MSVC linker to crash during
# incremental linking, so avoid the /INCREMENTAL:YES flag.
if(WIN32 AND "${CMAKE_CXX_COMPILER_ID}" MATCHES "Intel")
set(_cmake_options "-DCMAKE_EXE_LINKER_FLAGS=")
endif()
if("${CMAKE_GENERATOR}" MATCHES "Make")
set(TEST_LINK_DEPENDS ${BuildDepends_BINARY_DIR}/Project/linkdep.txt)
file(WRITE ${TEST_LINK_DEPENDS} "1")
endif()
list(APPEND _cmake_options "-DTEST_LINK_DEPENDS=${TEST_LINK_DEPENDS}")
list(APPEND _cmake_options "-DCMAKE_FORCE_DEPFILES=1")
file(MAKE_DIRECTORY ${BuildDepends_BINARY_DIR}/Project)
message("Creating Project/foo.cxx")
write_file(${BuildDepends_BINARY_DIR}/Project/foo.cxx
"const char* foo() { return \"foo\";}" )
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot.hxx.in
"static const char* zot = \"zot\";\n")
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_custom.hxx.in
"static const char* zot_custom = \"zot_custom\";\n")
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_macro_dir.hxx
"static const char* zot_macro_dir = \"zot_macro_dir\";\n")
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_macro_tgt.hxx
"static const char* zot_macro_tgt = \"zot_macro_tgt\";\n")
help_xcode_depends()
message("Building project first time")
try_compile(RESULT
${BuildDepends_BINARY_DIR}/Project
${BuildDepends_SOURCE_DIR}/Project
testRebuild
CMAKE_FLAGS ${_cmake_options}
OUTPUT_VARIABLE OUTPUT)
if(HELP_XCODE)
try_compile(RESULT
${BuildDepends_BINARY_DIR}/Project
${BuildDepends_SOURCE_DIR}/Project
testRebuild
OUTPUT_VARIABLE OUTPUT)
try_compile(RESULT
${BuildDepends_BINARY_DIR}/Project
${BuildDepends_SOURCE_DIR}/Project
testRebuild
OUTPUT_VARIABLE OUTPUT)
endif()
message("Output from first build:\n${OUTPUT}")
if(NOT RESULT)
message(SEND_ERROR "Could not build test project (1)!")
endif()
set(bar ${BuildDepends_BINARY_DIR}/Project/bar${CMAKE_EXECUTABLE_SUFFIX})
if(EXISTS
"${BuildDepends_BINARY_DIR}/Project/Debug/bar${CMAKE_EXECUTABLE_SUFFIX}" )
message("found debug")
set(bar
"${BuildDepends_BINARY_DIR}/Project/Debug/bar${CMAKE_EXECUTABLE_SUFFIX}")
endif()
set(zot ${BuildDepends_BINARY_DIR}/Project/zot${CMAKE_EXECUTABLE_SUFFIX})
if(EXISTS
"${BuildDepends_BINARY_DIR}/Project/Debug/zot${CMAKE_EXECUTABLE_SUFFIX}" )
message("found debug")
set(zot
"${BuildDepends_BINARY_DIR}/Project/Debug/zot${CMAKE_EXECUTABLE_SUFFIX}")
endif()
message("Running ${bar} ")
execute_process(COMMAND ${bar} OUTPUT_VARIABLE out RESULT_VARIABLE runResult)
string(REGEX REPLACE "[\r\n]" " " out "${out}")
message("Run result: ${runResult} Output: \"${out}\"")
if("${out}" STREQUAL "foo ")
message("Worked!")
else()
message(SEND_ERROR "Project did not initially build properly: ${out}")
endif()
message("Running ${zot} ")
execute_process(COMMAND ${zot} OUTPUT_VARIABLE out RESULT_VARIABLE runResult)
string(REGEX REPLACE "[\r\n]" " " out "${out}")
message("Run result: ${runResult} Output: \"${out}\"")
set(VALUE_UNCHANGED "[zot] [zot_custom] [zot_macro_dir] [zot_macro_tgt] ")
if("${out}" STREQUAL "${VALUE_UNCHANGED}")
message("Worked!")
else()
message(SEND_ERROR "Project did not initially build properly: ${out}")
endif()
message("Waiting 3 seconds...")
# any additional argument will cause ${bar} to wait forever
execute_process(COMMAND ${bar} -infinite TIMEOUT 3 OUTPUT_VARIABLE out)
message("Modifying Project/foo.cxx")
write_file(${BuildDepends_BINARY_DIR}/Project/foo.cxx
"const char* foo() { return \"foo changed\";}" )
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot.hxx.in
"static const char* zot = \"zot changed\";\n")
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_custom.hxx.in
"static const char* zot_custom = \"zot_custom changed\";\n")
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_macro_dir.hxx
"static const char* zot_macro_dir = \"zot_macro_dir changed\";\n")
file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_macro_tgt.hxx
"static const char* zot_macro_tgt = \"zot_macro_tgt changed\";\n")
if(TEST_LINK_DEPENDS)
file(WRITE ${TEST_LINK_DEPENDS} "2")
endif()
help_xcode_depends()
message("Building project second time")
try_compile(RESULT
${BuildDepends_BINARY_DIR}/Project
${BuildDepends_SOURCE_DIR}/Project
testRebuild
CMAKE_FLAGS ${_cmake_options}
OUTPUT_VARIABLE OUTPUT)
# Xcode is in serious need of help here
if(HELP_XCODE OR HELP_NINJA)
try_compile(RESULT
${BuildDepends_BINARY_DIR}/Project
${BuildDepends_SOURCE_DIR}/Project
testRebuild
OUTPUT_VARIABLE OUTPUT)
try_compile(RESULT
${BuildDepends_BINARY_DIR}/Project
${BuildDepends_SOURCE_DIR}/Project
testRebuild
OUTPUT_VARIABLE OUTPUT)
endif()
message("Output from second build:\n${OUTPUT}")
if(NOT RESULT)
message(SEND_ERROR "Could not build test project (2)!")
endif()
if(EXISTS
"${BuildDepends_BINARY_DIR}/Project/Debug/bar${CMAKE_EXECUTABLE_SUFFIX}" )
message("found debug")
endif()
if(EXISTS
"${BuildDepends_BINARY_DIR}/Project/Debug/zot${CMAKE_EXECUTABLE_SUFFIX}" )
message("found debug")
endif()
message("Running ${bar} ")
execute_process(COMMAND ${bar} OUTPUT_VARIABLE out RESULT_VARIABLE runResult)
string(REGEX REPLACE "[\r\n]" " " out "${out}")
message("Run result: ${runResult} Output: \"${out}\"")
if("${out}" STREQUAL "foo changed ")
message("Worked!")
else()
message(SEND_ERROR "Project did not rebuild properly!")
endif()
message("Running ${zot} ")
execute_process(COMMAND ${zot} OUTPUT_VARIABLE out RESULT_VARIABLE runResult)
string(REGEX REPLACE "[\r\n]" " " out "${out}")
message("Run result: ${runResult} Output: \"${out}\"")
set(VALUE_CHANGED
"[zot changed] [zot_custom changed] [zot_macro_dir changed] [zot_macro_tgt changed] "
)
if("${out}" STREQUAL "${VALUE_CHANGED}")
message("Worked!")
else()
message(SEND_ERROR "Project did not rebuild properly!")
endif()
if(TEST_LINK_DEPENDS)
set(linkdep ${BuildDepends_BINARY_DIR}/Project/linkdep${CMAKE_EXECUTABLE_SUFFIX})
if(${linkdep} IS_NEWER_THAN ${TEST_LINK_DEPENDS})
message("LINK_DEPENDS worked")
else()
message(SEND_ERROR "LINK_DEPENDS failed. Executable
${linkdep}
is not newer than dependency
${TEST_LINK_DEPENDS}
")
endif()
endif()
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