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FPHSA: add capability to specify message explaining reason of failure

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Fixes: #19660
This commit is contained in:
Marc Chevrier 2019-09-27 12:20:15 +02:00
parent 8c568722d7
commit 60473cc660
15 changed files with 96 additions and 6 deletions
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5
Help/release/dev/FPHSA-reason-failure-message.rst Normal file
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@ -0,0 +1,5 @@
FPHSA-reason-failure-message
----------------------------
* Modules :module:`FindPackageHandleStandardArgs` gains the capability to
specify a message giving the reason for the failure.

27
Modules/FindPackageHandleStandardArgs.cmake
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@ -27,6 +27,7 @@ valid filepaths.
[VERSION_VAR <version-var>]
[HANDLE_COMPONENTS]
[CONFIG_MODE]
[REASON_FAILURE_MESSAGE <reason-failure-message>]
[FAIL_MESSAGE <custom-failure-message>]
)
@ -81,6 +82,10 @@ valid filepaths.
will automatically check whether the package configuration file
was found.
``REASON_FAILURE_MESSAGE <reason-failure-message>``
Specify a custom message of the reason for the failure which will be
appended to the default generated message.
``FAIL_MESSAGE <custom-failure-message>``
Specify a custom failure message instead of using the default
generated message. Not recommended.
@ -133,11 +138,15 @@ include(${CMAKE_CURRENT_LIST_DIR}/FindPackageMessage.cmake)
# internal helper macro
macro(_FPHSA_FAILURE_MESSAGE _msg)
set (__msg "${_msg}")
if (FPHSA_REASON_FAILURE_MESSAGE)
string(APPEND __msg "\n Reason given by package: ${FPHSA_REASON_FAILURE_MESSAGE}\n")
endif()
if (${_NAME}_FIND_REQUIRED)
message(FATAL_ERROR "${_msg}")
message(FATAL_ERROR "${__msg}")
else ()
if (NOT ${_NAME}_FIND_QUIETLY)
message(STATUS "${_msg}")
message(STATUS "${__msg}")
endif ()
endif ()
endmacro()
@ -158,12 +167,18 @@ macro(_FPHSA_HANDLE_FAILURE_CONFIG_MODE)
foreach(currentConfigIndex RANGE ${configsCount})
list(GET ${_NAME}_CONSIDERED_CONFIGS ${currentConfigIndex} filename)
list(GET ${_NAME}_CONSIDERED_VERSIONS ${currentConfigIndex} version)
string(APPEND configsText " ${filename} (version ${version})\n")
string(APPEND configsText "\n ${filename} (version ${version})")
endforeach()
if (${_NAME}_NOT_FOUND_MESSAGE)
string(APPEND configsText " Reason given by package: ${${_NAME}_NOT_FOUND_MESSAGE}\n")
if (FPHSA_REASON_FAILURE_MESSAGE)
string(PREPEND FPHSA_REASON_FAILURE_MESSAGE "${${_NAME}_NOT_FOUND_MESSAGE}\n ")
else()
set(FPHSA_REASON_FAILURE_MESSAGE "${${_NAME}_NOT_FOUND_MESSAGE}")
endif()
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE} ${VERSION_MSG}, checked the following files:\n${configsText}")
else()
string(APPEND configsText "\n")
endif()
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE} ${VERSION_MSG}, checked the following files:${configsText}")
else()
# Simple case: No Config-file was found at all:
@ -177,7 +192,7 @@ function(FIND_PACKAGE_HANDLE_STANDARD_ARGS _NAME _FIRST_ARG)
# Set up the arguments for `cmake_parse_arguments`.
set(options CONFIG_MODE HANDLE_COMPONENTS)
set(oneValueArgs FAIL_MESSAGE VERSION_VAR FOUND_VAR)
set(oneValueArgs FAIL_MESSAGE REASON_FAILURE_MESSAGE VERSION_VAR FOUND_VAR)
set(multiValueArgs REQUIRED_VARS)
# Check whether we are in 'simple' or 'extended' mode:

1
Tests/RunCMake/FPHSA/CustomMessageConfig.cmake Normal file
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@ -0,0 +1 @@
# pseudo config module

4
Tests/RunCMake/FPHSA/CustomMessageConfigVersion.cmake Normal file
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@ -0,0 +1,4 @@
# pseudo find_module
set (PACKAGE_VERSION 2)
set (PACKAGE_VERSION_UNSUITABLE TRUE)

17
Tests/RunCMake/FPHSA/FindCustomMessage.cmake Normal file
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@ -0,0 +1,17 @@
# pseudo find_module
if (REASON_FAILURE_MESSAGE)
list (PREPEND REASON_FAILURE_MESSAGE "REASON_FAILURE_MESSAGE")
endif()
include(FindPackageHandleStandardArgs)
if (CONFIG_MODE)
find_package (CustomMessage QUIET CONFIG HINTS "${CMAKE_MODULE_PATH}")
find_package_handle_standard_args(CustomMessage CONFIG_MODE
${REASON_FAILURE_MESSAGE})
else()
find_package_handle_standard_args(CustomMessage REQUIRED_VARS FOOBAR
VERSION_VAR CustomMessage_VERSION
${REASON_FAILURE_MESSAGE})
endif()

7
Tests/RunCMake/FPHSA/RunCMakeTest.cmake
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@ -39,3 +39,10 @@ unset(RunCMake_DEFAULT_stderr)
# check if searching for a version 0 works
list(APPEND RunCMake_TEST_OPTIONS "-DCMAKE_MODULE_PATH=${CMAKE_CURRENT_LIST_DIR}" "-DPseudo_VERSION=0")
run_cmake(exact_0_matching)
# check custom error message
set(RunCMake_TEST_OPTIONS "-DCMAKE_MODULE_PATH=${CMAKE_CURRENT_LIST_DIR}" "-DCustomMessage_VERSION=1.2.3.4")
run_cmake(custom_message_1)
set(RunCMake_TEST_OPTIONS "-DCMAKE_MODULE_PATH=${CMAKE_CURRENT_LIST_DIR}" "-DCONFIG_MODE=TRUE")
run_cmake(custom_message_2)
run_cmake(custom_message_3)

1
Tests/RunCMake/FPHSA/custom_message_1-result.txt Normal file
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@ -0,0 +1 @@
1

7
Tests/RunCMake/FPHSA/custom_message_1-stderr.txt Normal file
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@ -0,0 +1,7 @@
^CMake Error at .+/Modules/FindPackageHandleStandardArgs.cmake:[0-9]+ \(message\):
Could NOT find CustomMessage \(missing: FOOBAR\) \(found suitable version
"1\.2\.3\.4", minimum required is "1\.2"\)
Reason given by package: Reason Failure
Call Stack \(most recent call first\):

4
Tests/RunCMake/FPHSA/custom_message_1.cmake Normal file
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@ -0,0 +1,4 @@
set (REASON_FAILURE_MESSAGE "Reason Failure")
find_package(CustomMessage 1.2 REQUIRED)

1
Tests/RunCMake/FPHSA/custom_message_2-result.txt Normal file
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@ -0,0 +1 @@
1

8
Tests/RunCMake/FPHSA/custom_message_2-stderr.txt Normal file
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@ -0,0 +1,8 @@
^CMake Error at .+/Modules/FindPackageHandleStandardArgs.cmake:[0-9]+ \(message\):
Could NOT find CustomMessage \(Required is at least version "1\.2"\), checked
the following files:
.+/Tests/RunCMake/FPHSA/CustomMessageConfig.cmake \(version 2\)
Reason given by package: Not Found Message
Call Stack \(most recent call first\):

5
Tests/RunCMake/FPHSA/custom_message_2.cmake Normal file
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@ -0,0 +1,5 @@
unset (REASON_FAILURE_MESSAGE)
set (CustomMessage_NOT_FOUND_MESSAGE "Not Found Message")
find_package(CustomMessage 1.2 REQUIRED)

1
Tests/RunCMake/FPHSA/custom_message_3-result.txt Normal file
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@ -0,0 +1 @@
1

9
Tests/RunCMake/FPHSA/custom_message_3-stderr.txt Normal file
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@ -0,0 +1,9 @@
^CMake Error at .+/Modules/FindPackageHandleStandardArgs.cmake:[0-9]+ \(message\):
Could NOT find CustomMessage \(Required is at least version "1\.2"\), checked
the following files:
.+/Tests/RunCMake/FPHSA/CustomMessageConfig.cmake \(version 2\)
Reason given by package: Not Found Message
Reason Failure
Call Stack \(most recent call first\):

5
Tests/RunCMake/FPHSA/custom_message_3.cmake Normal file
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@ -0,0 +1,5 @@
set (REASON_FAILURE_MESSAGE "Reason Failure")
set (CustomMessage_NOT_FOUND_MESSAGE "Not Found Message")
find_package(CustomMessage 1.2 REQUIRED)