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FindPkgConfig: Fix parsing of backslash-escaped spaces in pkg-config output

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Treat backslash-escaped spaces as "space within argument" rather than
"space delimiting arguments".

Update our `FindPkgConfig_LIBRARY_PATH` test case to escape spaces in
the path, and run it unconditionally.
This commit is contained in:
Alex Birch
2021-12-31 16:48:56 +00:00
committed by Brad King
parent 364fde65ee
commit 5cfbc76371
4 changed files with 18 additions and 14 deletions
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4
Modules/FindPkgConfig.cmake
View File

@@ -143,7 +143,9 @@ macro(_pkgconfig_invoke _pkglist _prefix _varname _regexp)
string(REGEX REPLACE "${_regexp}" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}")
endif()
separate_arguments(_pkgconfig_invoke_result)
# pkg-config can represent "spaces within an argument" by backslash-escaping the space.
# UNIX_COMMAND mode treats backslash-escaped spaces as "not a space that delimits arguments".
separate_arguments(_pkgconfig_invoke_result UNIX_COMMAND "${_pkgconfig_invoke_result}")
#message(STATUS " ${_varname} ... ${_pkgconfig_invoke_result}")
set(_pkgconfig_${_varname} ${_pkgconfig_invoke_result})

4
Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-stdout.txt
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@@ -1,3 +1,3 @@
-- ZOT_LIBRARIES='zot'
-- ZOT_LINK_LIBRARIES='[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-build/zot/lib/prefix-zot-suffix'
-- ZOT_LDFLAGS='-L[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-build/zot/lib;-lzot'
-- ZOT_LINK_LIBRARIES='[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-build/root/lib/prefix-zot-suffix'
-- ZOT_LDFLAGS='-L[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-build/root/lib;-lzot'

19
Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH.cmake
View File

@@ -1,11 +1,16 @@
find_package(PkgConfig REQUIRED)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/zot/lib/pkgconfig/zot.pc" "
prefix=${CMAKE_CURRENT_BINARY_DIR}/zot
set(ROOT "${CMAKE_CURRENT_BINARY_DIR}/root")
string(REPLACE " " "\\ " ESCAPED_ROOT "${ROOT}")
set(LIB_DIR "${ROOT}/lib")
set(PKGCONFIG_DIR "${LIB_DIR}/pkgconfig")
file(WRITE "${PKGCONFIG_DIR}/zot.pc" "
prefix=${ESCAPED_ROOT}
libdir=\${prefix}/lib
Name: Zot
Description: Dummy packaget to test LIBRARY_DIR support
Description: Dummy package to test LIBRARY_DIR support
Version: 1.0
Libs: -L\${libdir} -lzot
")
@@ -13,15 +18,15 @@ Libs: -L\${libdir} -lzot
# Create a "library" file to find in libdir.
set(CMAKE_FIND_LIBRARY_PREFIXES "prefix-")
set(CMAKE_FIND_LIBRARY_SUFFIXES "-suffix")
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/zot/lib/prefix-zot-suffix")
file(WRITE "${LIB_DIR}/prefix-zot-suffix")
# 'pkg-config --libs' drops -L flags in PKG_CONFIG_SYSTEM_LIBRARY_PATH by default.
set(ENV{PKG_CONFIG_SYSTEM_LIBRARY_PATH} "${CMAKE_CURRENT_BINARY_DIR}/zot/lib")
set(ENV{PKG_CONFIG_SYSTEM_LIBRARY_PATH} "${LIB_DIR}")
# 'pkgconf --libs' also drops -L flags in LIBRARY_PATH by default.
set(ENV{LIBRARY_PATH} "${CMAKE_CURRENT_BINARY_DIR}/zot/lib")
set(ENV{LIBRARY_PATH} "${LIB_DIR}")
set(ENV{PKG_CONFIG_PATH} "${CMAKE_CURRENT_BINARY_DIR}/zot/lib/pkgconfig")
set(ENV{PKG_CONFIG_PATH} "${PKGCONFIG_DIR}")
pkg_check_modules(ZOT REQUIRED zot)
message(STATUS "ZOT_LIBRARIES='${ZOT_LIBRARIES}'")

5
Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake
View File

@@ -32,8 +32,5 @@ if (PKG_CONFIG_FOUND)
run_cmake(FindPkgConfig_VERSION_OPERATORS)
run_cmake(FindPkgConfig_GET_MATCHING_MODULE_NAME)
run_cmake(FindPkgConfig_empty_target)
if(NOT RunCMake_BINARY_DIR MATCHES " ")
run_cmake(FindPkgConfig_LIBRARY_PATH)
endif()
run_cmake(FindPkgConfig_LIBRARY_PATH)
endif ()