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-rw-r--r--Modules/ExternalProject.cmake114
-rw-r--r--Modules/ExternalProject/RepositoryInfo.txt.in12
-rw-r--r--Tests/RunCMake/ExternalProject/MultiCommand.cmake12
-rw-r--r--Tests/RunCMake/ExternalProject/RunCMakeTest.cmake17
-rw-r--r--Tests/RunCMake/ExternalProject/SourceDirChange-build2-stdout.txt1
-rw-r--r--Tests/RunCMake/ExternalProject/SourceDirChange.cmake20
6 files changed, 108 insertions, 68 deletions
diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index 411a1a9..05af822 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -2473,10 +2473,13 @@ function(_ep_add_download_command name)
set(depends)
set(comment)
set(work_dir)
+ set(extra_repo_info)
if(cmd_set)
set(work_dir ${download_dir})
+ set(method custom)
elseif(cvs_repository)
+ set(method cvs)
find_package(CVS QUIET)
if(NOT CVS_EXECUTABLE)
message(FATAL_ERROR "error: could not find cvs for checkout of ${name}")
@@ -2488,22 +2491,13 @@ function(_ep_add_download_command name)
endif()
get_property(cvs_tag TARGET ${name} PROPERTY _EP_CVS_TAG)
-
- set(repository ${cvs_repository})
- set(module ${cvs_module})
- set(tag ${cvs_tag})
- configure_file(
- "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/ExternalProject/RepositoryInfo.txt.in"
- "${stamp_dir}/${name}-cvsinfo.txt"
- @ONLY
- )
-
get_filename_component(src_name "${source_dir}" NAME)
get_filename_component(work_dir "${source_dir}" PATH)
set(comment "Performing download step (CVS checkout) for '${name}'")
set(cmd ${CVS_EXECUTABLE} -d ${cvs_repository} -q co ${cvs_tag} -d ${src_name} ${cvs_module})
- list(APPEND depends ${stamp_dir}/${name}-cvsinfo.txt)
+
elseif(svn_repository)
+ set(method svn)
find_package(Subversion QUIET)
if(NOT Subversion_SVN_EXECUTABLE)
message(FATAL_ERROR "error: could not find svn for checkout of ${name}")
@@ -2514,15 +2508,6 @@ function(_ep_add_download_command name)
get_property(svn_password TARGET ${name} PROPERTY _EP_SVN_PASSWORD)
get_property(svn_trust_cert TARGET ${name} PROPERTY _EP_SVN_TRUST_CERT)
- set(repository "${svn_repository} user=${svn_username} password=${svn_password}")
- set(module)
- set(tag ${svn_revision})
- configure_file(
- "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/ExternalProject/RepositoryInfo.txt.in"
- "${stamp_dir}/${name}-svninfo.txt"
- @ONLY
- )
-
get_filename_component(src_name "${source_dir}" NAME)
get_filename_component(work_dir "${source_dir}" PATH)
set(comment "Performing download step (SVN checkout) for '${name}'")
@@ -2538,8 +2523,9 @@ function(_ep_add_download_command name)
endif()
set(cmd ${Subversion_SVN_EXECUTABLE} co ${svn_repository} ${svn_revision}
--non-interactive ${svn_trust_cert_args} ${svn_user_pw_args} ${src_name})
- list(APPEND depends ${stamp_dir}/${name}-svninfo.txt)
+
elseif(git_repository)
+ set(method git)
# FetchContent gives us these directly, so don't try to recompute them
if(NOT GIT_EXECUTABLE OR NOT GIT_VERSION_STRING)
unset(CMAKE_MODULE_PATH) # Use CMake builtin find module
@@ -2584,21 +2570,21 @@ function(_ep_add_download_command name)
list(PREPEND git_config advice.detachedHead=false)
endif()
- # For the download step, and the git clone operation, only the repository
- # should be recorded in a configured RepositoryInfo file. If the repo
- # changes, the clone script should be run again. But if only the tag
- # changes, avoid running the clone script again. Let the 'always' running
- # update step checkout the new tag.
+ # The command doesn't expose any details, so we need to record additional
+ # information in the RepositoryInfo.txt file. For the download step, only
+ # the things specifically affecting the clone operation should be recorded.
+ # If the repo changes, the clone script should be run again.
+ # But if only the tag changes, avoid running the clone script again.
+ # Let the 'always' running update step checkout the new tag.
#
- set(repository ${git_repository})
- set(module)
- set(tag ${git_remote_name})
- configure_file(
- "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/ExternalProject/RepositoryInfo.txt.in"
- "${stamp_dir}/${name}-gitinfo.txt"
- @ONLY
- )
-
+ set(extra_repo_info
+"repository=${git_repository}
+remote=${git_remote_name}
+init_submodules=${git_init_submodules}
+recurse_submodules=${git_submodules_recurse}
+submodules=${git_submodules}
+CMP0097=${_EP_CMP0097}
+")
get_filename_component(src_name "${source_dir}" NAME)
get_filename_component(work_dir "${source_dir}" PATH)
@@ -2612,8 +2598,9 @@ function(_ep_add_download_command name)
)
set(comment "Performing download step (git clone) for '${name}'")
set(cmd ${CMAKE_COMMAND} -P ${tmp_dir}/${name}-gitclone.cmake)
- list(APPEND depends ${stamp_dir}/${name}-gitinfo.txt)
+
elseif(hg_repository)
+ set(method hg)
find_package(Hg QUIET)
if(NOT HG_EXECUTABLE)
message(FATAL_ERROR "error: could not find hg for clone of ${name}")
@@ -2624,21 +2611,14 @@ function(_ep_add_download_command name)
set(hg_tag "tip")
endif()
- # For the download step, and the hg clone operation, only the repository
- # should be recorded in a configured RepositoryInfo file. If the repo
- # changes, the clone script should be run again. But if only the tag
- # changes, avoid running the clone script again. Let the 'always' running
- # update step checkout the new tag.
+ # The command doesn't expose any details, so we need to record additional
+ # information in the RepositoryInfo.txt file. For the download step, only
+ # the things specifically affecting the clone operation should be recorded.
+ # If the repo changes, the clone script should be run again.
+ # But if only the tag changes, avoid running the clone script again.
+ # Let the 'always' running update step checkout the new tag.
#
- set(repository ${hg_repository})
- set(module)
- set(tag)
- configure_file(
- "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/ExternalProject/RepositoryInfo.txt.in"
- "${stamp_dir}/${name}-hginfo.txt"
- @ONLY
- )
-
+ set(extra_repo_info "repository=${hg_repository}")
get_filename_component(src_name "${source_dir}" NAME)
get_filename_component(work_dir "${source_dir}" PATH)
@@ -2652,8 +2632,9 @@ function(_ep_add_download_command name)
)
set(comment "Performing download step (hg clone) for '${name}'")
set(cmd ${CMAKE_COMMAND} -P ${tmp_dir}/${name}-hgclone.cmake)
- list(APPEND depends ${stamp_dir}/${name}-hginfo.txt)
+
elseif(url)
+ set(method url)
get_filename_component(work_dir "${source_dir}" PATH)
get_property(hash TARGET ${name} PROPERTY _EP_URL_HASH)
_ep_get_hash_regex(_ep_hash_regex)
@@ -2671,15 +2652,10 @@ function(_ep_add_download_command name)
if(md5 AND NOT hash)
set(hash "MD5=${md5}")
endif()
- set(repository "external project URL")
- set(module "${url}")
- set(tag "${hash}")
- configure_file(
- "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/ExternalProject/RepositoryInfo.txt.in"
- "${stamp_dir}/${name}-urlinfo.txt"
- @ONLY
- )
- list(APPEND depends ${stamp_dir}/${name}-urlinfo.txt)
+ set(extra_repo_info
+"url(s)=${url}
+hash=${hash}
+")
list(LENGTH url url_list_length)
if(NOT "${url_list_length}" STREQUAL "1")
@@ -2700,6 +2676,7 @@ function(_ep_add_download_command name)
COMMAND ${CMAKE_COMMAND} -E copy_directory ${abs_dir} ${source_dir})
else()
get_property(no_extract TARGET "${name}" PROPERTY _EP_DOWNLOAD_NO_EXTRACT)
+ string(APPEND extra_repo_info "no_extract=${no_extract}\n")
if("${url}" MATCHES "^[a-z]+://")
# TODO: Should download and extraction be different steps?
if("x${fname}" STREQUAL "x")
@@ -2754,6 +2731,11 @@ function(_ep_add_download_command name)
endif ()
set(comment "Performing download step (${steps}) for '${name}'")
file(WRITE "${stamp_dir}/verify-${name}.cmake" "") # already verified by 'download_script'
+
+ # Rather than adding everything to the RepositoryInfo.txt file, it is
+ # more robust to just depend on the download script. That way, we will
+ # re-download if any aspect of the download changes.
+ list(APPEND depends "${download_script}")
else()
set(file "${url}")
if (no_extract)
@@ -2782,6 +2764,7 @@ function(_ep_add_download_command name)
endif ()
endif()
else()
+ set(method source_dir)
_ep_is_dir_empty("${source_dir}" empty)
if(${empty})
message(SEND_ERROR
@@ -2799,6 +2782,17 @@ function(_ep_add_download_command name)
endif()
endif()
+ # We use configure_file() to write the repo_info_file so that the file's
+ # timestamp is not updated if we don't change the contents
+
+ set(repo_info_file ${stamp_dir}/${name}-${method}info.txt)
+ list(APPEND depends ${repo_info_file})
+ configure_file(
+ "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/ExternalProject/RepositoryInfo.txt.in"
+ "${repo_info_file}"
+ @ONLY
+ )
+
get_property(log TARGET ${name} PROPERTY _EP_LOG_DOWNLOAD)
if(log)
set(log LOG 1)
diff --git a/Modules/ExternalProject/RepositoryInfo.txt.in b/Modules/ExternalProject/RepositoryInfo.txt.in
index df8e322..b81850f 100644
--- a/Modules/ExternalProject/RepositoryInfo.txt.in
+++ b/Modules/ExternalProject/RepositoryInfo.txt.in
@@ -1,3 +1,9 @@
-repository='@repository@'
-module='@module@'
-tag='@tag@'
+# This is a generated file and its contents are an internal implementation detail.
+# The download step will be re-executed if anything in this file changes.
+# No other meaning or use of this file is supported.
+
+method=@method@
+command=@cmd@
+source_dir=@source_dir@
+work_dir=@work_dir@
+@extra_repo_info@
diff --git a/Tests/RunCMake/ExternalProject/MultiCommand.cmake b/Tests/RunCMake/ExternalProject/MultiCommand.cmake
index 0849658..3e8bd94 100644
--- a/Tests/RunCMake/ExternalProject/MultiCommand.cmake
+++ b/Tests/RunCMake/ExternalProject/MultiCommand.cmake
@@ -1,5 +1,12 @@
include(ExternalProject)
+# Force all steps to be re-run by removing timestamps from any previous run.
+# This has to happen before we call ExternalProject_Add() because that command
+# writes some files to the stamp directory for recording repository details.
+set(STAMP_DIR ${CMAKE_BINARY_DIR}/multiCommand-prefix/src/multiCommand-stamp)
+file(REMOVE_RECURSE "${STAMP_DIR}")
+file(MAKE_DIRECTORY "${STAMP_DIR}")
+
# Verify COMMAND keyword is recognized after various *_COMMAND options
ExternalProject_Add(multiCommand
DOWNLOAD_COMMAND "${CMAKE_COMMAND}" -E echo "download 1"
@@ -17,8 +24,3 @@ ExternalProject_Add(multiCommand
INSTALL_COMMAND "${CMAKE_COMMAND}" -E echo "install 1"
COMMAND "${CMAKE_COMMAND}" -E echo "install 2"
)
-
-# Force all steps to be re-run by removing timestamps from any previous run
-ExternalProject_Get_Property(multiCommand STAMP_DIR)
-file(REMOVE_RECURSE "${STAMP_DIR}")
-file(MAKE_DIRECTORY "${STAMP_DIR}")
diff --git a/Tests/RunCMake/ExternalProject/RunCMakeTest.cmake b/Tests/RunCMake/ExternalProject/RunCMakeTest.cmake
index 48f8b23..fde384f 100644
--- a/Tests/RunCMake/ExternalProject/RunCMakeTest.cmake
+++ b/Tests/RunCMake/ExternalProject/RunCMakeTest.cmake
@@ -61,6 +61,23 @@ if(NOT XCODE_VERSION OR XCODE_VERSION VERSION_LESS 12)
endif()
run_steps_CMP0114(NEW)
+function(__ep_test_source_dir_change)
+ set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/SourceDirChange-build)
+ set(RunCMake_TEST_NO_CLEAN 1)
+ file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+ file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+ run_cmake(SourceDirChange)
+ run_cmake_command(SourceDirChange-build1 ${CMAKE_COMMAND} --build .)
+ # Because some file systems have timestamps with only one second resolution,
+ # we have to ensure we don't re-run the configure stage too quickly after the
+ # first build. Otherwise, the modified RepositoryInfo.txt files the next
+ # configure writes might still have the same timestamp as the previous one.
+ execute_process(COMMAND ${CMAKE_COMMAND} -E sleep 1.125)
+ run_cmake_command(SourceDirChange-change ${CMAKE_COMMAND} -DSOURCE_DIR_CHANGE=YES .)
+ run_cmake_command(SourceDirChange-build2 ${CMAKE_COMMAND} --build .)
+endfunction()
+__ep_test_source_dir_change()
+
# Run both cmake and build steps. We always do a clean before the
# build to ensure that the download step re-runs each time.
function(__ep_test_with_build testName)
diff --git a/Tests/RunCMake/ExternalProject/SourceDirChange-build2-stdout.txt b/Tests/RunCMake/ExternalProject/SourceDirChange-build2-stdout.txt
new file mode 100644
index 0000000..22dac9d
--- /dev/null
+++ b/Tests/RunCMake/ExternalProject/SourceDirChange-build2-stdout.txt
@@ -0,0 +1 @@
+Download command executed
diff --git a/Tests/RunCMake/ExternalProject/SourceDirChange.cmake b/Tests/RunCMake/ExternalProject/SourceDirChange.cmake
new file mode 100644
index 0000000..62213cd
--- /dev/null
+++ b/Tests/RunCMake/ExternalProject/SourceDirChange.cmake
@@ -0,0 +1,20 @@
+include(ExternalProject)
+
+file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/first")
+file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/second")
+
+if("${SOURCE_DIR_CHANGE}" STREQUAL "")
+ set(source_dir first)
+else()
+ set(source_dir second)
+endif()
+
+ExternalProject_Add(source_dir_change
+ SOURCE_DIR "${CMAKE_BINARY_DIR}/${source_dir}"
+ DOWNLOAD_COMMAND "${CMAKE_COMMAND}" -E echo "Download command executed"
+ UPDATE_COMMAND ""
+ CONFIGURE_COMMAND ""
+ BUILD_COMMAND ""
+ TEST_COMMAND ""
+ INSTALL_COMMAND ""
+)