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find_package: Save/restore PACKAGE_PREFIX_DIR

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Package configuration files generated by `configure_package_config_file`
set this variable in `@PACKAGE_INIT@` and then use it later.  There may
be intervening calls to `find_package`, e.g., via `find_dependency`.
If the loaded package also used `configure_package_config_file`, it
may change the value of `PACKAGE_PREFIX_DIR`.  Explicitly save and
restore the value to avoid this.

Fixes: #25827
This commit is contained in:
Craig Scott
2024-04-14 18:07:41 +10:00
committed by Brad King
parent 8ac7958e3a
commit c5231ba29e
4 changed files with 81 additions and 0 deletions
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Tests/RunCMake/CMakePackage/NestedConfigFile-stdout.txt
+6
View File
@@ -0,0 +1,6 @@
(-- )?Before find_dependency: PACKAGE_PREFIX_DIR = .*/Tests/RunCMake/CMakePackage/NestedConfigFile-build/install_pkg_b
(-- )?Hello from pkg_a
(-- )?Leaving pkg_a-config\.cmake with PACKAGE_PREFIX_DIR = .*/Tests/RunCMake/CMakePackage/NestedConfigFile-build/install_pkg_a
(-- )?After find_dependency: PACKAGE_PREFIX_DIR = .*/Tests/RunCMake/CMakePackage/NestedConfigFile-build/install_pkg_b
(-- )?Hello from pkg_b
(-- )?Leaving pkg_b-config\.cmake with PACKAGE_PREFIX_DIR = .*/Tests/RunCMake/CMakePackage/NestedConfigFile-build/install_pkg_b
Tests/RunCMake/CMakePackage/NestedConfigFile.cmake
+43
View File
@@ -0,0 +1,43 @@
set(CMAKE_INSTALL_DATADIR share)
include(CMakePackageConfigHelpers)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/pkg_a-config.cmake.in [[
@PACKAGE_INIT@
include("@PACKAGE_CMAKE_INSTALL_DATADIR@/pkg_a_included.cmake")
message(STATUS "Leaving pkg_a-config.cmake with PACKAGE_PREFIX_DIR = ${PACKAGE_PREFIX_DIR}")
]])
configure_package_config_file(
${CMAKE_CURRENT_BINARY_DIR}/pkg_a-config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/install_pkg_a/pkg_a-config.cmake
INSTALL_DESTINATION .
PATH_VARS CMAKE_INSTALL_DATADIR
)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/install_pkg_a/share/pkg_a_included.cmake
[[message(STATUS "Hello from pkg_a")]]
)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/pkg_b-config.cmake.in [[
@PACKAGE_INIT@
include(CMakeFindDependencyMacro)
message(STATUS "Before find_dependency: PACKAGE_PREFIX_DIR = ${PACKAGE_PREFIX_DIR}")
find_dependency(pkg_a NO_DEFAULT_PATH
PATHS "@CMAKE_CURRENT_BINARY_DIR@/install_pkg_a"
)
message(STATUS "After find_dependency: PACKAGE_PREFIX_DIR = ${PACKAGE_PREFIX_DIR}")
include("@PACKAGE_CMAKE_INSTALL_DATADIR@/pkg_b_included.cmake")
message(STATUS "Leaving pkg_b-config.cmake with PACKAGE_PREFIX_DIR = ${PACKAGE_PREFIX_DIR}")
]])
configure_package_config_file(
${CMAKE_CURRENT_BINARY_DIR}/pkg_b-config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/install_pkg_b/pkg_b-config.cmake
INSTALL_DESTINATION .
PATH_VARS CMAKE_INSTALL_DATADIR
)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/install_pkg_b/share/pkg_b_included.cmake
[[message(STATUS "Hello from pkg_b")]]
)
find_package(pkg_b REQUIRED NO_DEFAULT_PATH
PATHS ${CMAKE_CURRENT_BINARY_DIR}/install_pkg_b
)
Tests/RunCMake/CMakePackage/RunCMakeTest.cmake
+2
View File
@@ -4,6 +4,8 @@ if(NOT RunCMake_GENERATOR_IS_MULTI_CONFIG)
set(maybe_CMAKE_BUILD_TYPE -DCMAKE_BUILD_TYPE=Release)
endif()
run_cmake_with_options(NestedConfigFile ${maybe_CMAKE_BUILD_TYPE})
function(apple_export platform system_name archs sysroot)
set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/apple-export-${platform}-build)
string(REPLACE ";" "\\;" archs "${archs}")