[vcpkg baseline][qt5-base] Fix glib link issues on linux

docs/maintainers/portfile-functions.md

@@ -73,3 +73,7 @@
 ### [vcpkg-cmake-config](ports/vcpkg-cmake-config.md)
 
 - [vcpkg\_cmake\_config\_fixup](ports/vcpkg-cmake-config/vcpkg_cmake_config_fixup.md)
+
+### [vcpkg-pkgconfig-get-modules](ports/vcpkg-pkgconfig-get-modules.md)
+
+- [x\_vcpkg\_pkgconfig\_get\_modules](ports/vcpkg-pkgconfig-get-modules/x_vcpkg_pkgconfig_get_modules.md)

docs/maintainers/ports/vcpkg-pkgconfig-get-modules.md

@@ -0,0 +1,6 @@
+# vcpkg-pkgconfig-get-modules
+
+**Experimental: will change or be removed at any time**
+
+`vcpkg-pkgconfig-get-modules` provides `x_vcpkg_pkgconfig_get_modules()`, a function which simplifies calling
+`pkg-config` in portfiles in order to gather dependencies for exotic buildsystems.

docs/maintainers/ports/vcpkg-pkgconfig-get-modules/x_vcpkg_pkgconfig_get_modules.md

@@ -0,0 +1,44 @@
+# x_vcpkg_pkgconfig_get_modules
+
+The latest version of this document lives in the [vcpkg repo](https://github.com/Microsoft/vcpkg/blob/master/docs/maintainers/ports/vcpkg-pkgconfig-get-modules/x_vcpkg_pkgconfig_get_modules.md).
+
+Experimental
+Retrieve required module information from pkgconfig modules
+
+## Usage
+```cmake
+x_vcpkg_pkgconfig_get_modules(
+    PREFIX <prefix>
+    MODULES <pkgconfig_modules>...
+    [LIBS]
+    [LIBRARIES]
+    [LIBRARIES_DIRS]
+    [INCLUDE_DIRS]
+)
+```
+## Parameters
+
+### PREFIX
+Used variable prefix to use
+
+### MODULES
+List of pkgconfig modules to retrieve information for.
+
+### LIBS
+Returns `"${PKGCONFIG}" --libs` in <prefix>_LIBS_(DEBUG|RELEASE)
+
+### LIBRARIES
+Returns `"${PKGCONFIG}" --libs-only-l` in <prefix>_LIBRARIES_(DEBUG|RELEASE)
+
+### LIBRARIES_DIRS
+Returns `"${PKGCONFIG}" --libs-only-L` in <prefix>_LIBRARIES_DIRS_(DEBUG|RELEASE)
+
+### INCLUDE_DIRS
+Returns `"${PKGCONFIG}"  --cflags-only-I` in <prefix>_INCLUDE_DIRS_(DEBUG|RELEASE)
+
+## Examples
+
+* [qt5-base](https://github.com/microsoft/vcpkg/blob/master/ports/qt5-base/portfile.cmake)
+
+## Source
+[ports/vcpkg-pkgconfig-get-modules/x\_vcpkg\_pkgconfig\_get\_modules.cmake](https://github.com/Microsoft/vcpkg/blob/master/ports/vcpkg-pkgconfig-get-modules/x_vcpkg_pkgconfig_get_modules.cmake)

docs/regenerate.ps1

@@ -26,6 +26,7 @@ class CMakeDocumentation {
 [String[]]$cmakeScriptsPorts = @(
     'vcpkg-cmake'
     'vcpkg-cmake-config'
+    'vcpkg-pkgconfig-get-modules'
 )
 
 [CMakeDocumentation[]]$tableOfContents = @()

ports/qt5-base/cmake/qt_build_submodule.cmake

@@ -6,33 +6,34 @@ function(qt_build_submodule SOURCE_PATH)
     vcpkg_find_acquire_program(PYTHON2)
     get_filename_component(PYTHON2_EXE_PATH ${PYTHON2} DIRECTORY)
     vcpkg_add_to_path("${PYTHON2_EXE_PATH}")
-    
+
     vcpkg_configure_qmake(SOURCE_PATH ${SOURCE_PATH} ${ARGV})
 
     vcpkg_build_qmake(SKIP_MAKEFILES)
-    
+
     #Fix the installation location within the makefiles
     qt_fix_makefile_install("${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg/")
     qt_fix_makefile_install("${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel/")
 
     #Install the module files
     vcpkg_build_qmake(TARGETS install SKIP_MAKEFILES BUILD_LOGNAME install)
-    
+
     qt_fix_cmake(${CURRENT_PACKAGES_DIR} ${PORT})
+    vcpkg_fixup_pkgconfig() # Needs further investigation if this is enough!
 
     #Replace with VCPKG variables if PR #7733 is merged
     unset(BUILDTYPES)
     if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "debug")
         set(_buildname "DEBUG")
         list(APPEND BUILDTYPES ${_buildname})
         set(_short_name_${_buildname} "dbg")
-        set(_path_suffix_${_buildname} "/debug")        
+        set(_path_suffix_${_buildname} "/debug")
     endif()
     if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "release")
         set(_buildname "RELEASE")
         list(APPEND BUILDTYPES ${_buildname})
         set(_short_name_${_buildname} "rel")
-        set(_path_suffix_${_buildname} "")        
+        set(_path_suffix_${_buildname} "")
     endif()
     unset(_buildname)
 
@@ -42,14 +43,14 @@ function(qt_build_submodule SOURCE_PATH)
         file(GLOB_RECURSE PRL_FILES "${CURRENT_BUILD_PACKAGE_DIR}/lib/*.prl" "${CURRENT_PACKAGES_DIR}/tools/qt5${_path_suffix_${_buildname}}/lib/*.prl" 
                                     "${CURRENT_PACKAGES_DIR}/tools/qt5${_path_suffix_${_buildname}}/mkspecs/*.pri")
         qt_fix_prl("${CURRENT_BUILD_PACKAGE_DIR}" "${PRL_FILES}")
-        
+
         # This makes it impossible to use the build tools in any meaningful way. qt5 assumes they are all in one folder!
         # So does the Qt VS Plugin which even assumes all of the in a bin folder  
         #Move tools to the correct directory
         #if(EXISTS ${CURRENT_BUILD_PACKAGE_DIR}/tools/qt5)
         #    file(RENAME ${CURRENT_BUILD_PACKAGE_DIR}/tools/qt5 ${CURRENT_PACKAGES_DIR}/tools/${PORT})
         #endif()
-        
+
         # Move executables in bin to tools
         # This is ok since those are not build tools.
         file(GLOB PACKAGE_EXE ${CURRENT_BUILD_PACKAGE_DIR}/bin/*.exe)
@@ -64,26 +65,26 @@ function(qt_build_submodule SOURCE_PATH)
                 endif()
             endforeach()
         endif()
-        
+
         #cleanup empty folders
         file(GLOB PACKAGE_LIBS "${CURRENT_BUILD_PACKAGE_DIR}/lib/*")
         if(NOT PACKAGE_LIBS)
             file(REMOVE_RECURSE "${CURRENT_BUILD_PACKAGE_DIR}/lib")
         endif()
-        
+
         file(GLOB PACKAGE_BINS "${CURRENT_BUILD_PACKAGE_DIR}/bin/*")
         if(NOT PACKAGE_BINS)
             file(REMOVE_RECURSE "${CURRENT_BUILD_PACKAGE_DIR}/bin")
         endif()
     endforeach()
     if(EXISTS "${CURRENT_PACKAGES_DIR}/tools/qt5/bin")
         file(COPY "${CURRENT_PACKAGES_DIR}/tools/qt5/bin" DESTINATION "${CURRENT_PACKAGES_DIR}/tools/${PORT}")
-        
+
         set(CURRENT_INSTALLED_DIR_BACKUP "${CURRENT_INSTALLED_DIR}")
         set(CURRENT_INSTALLED_DIR "./../../.." ) # Making the qt.conf relative and not absolute
         configure_file(${CURRENT_INSTALLED_DIR_BACKUP}/tools/qt5/qt_release.conf ${CURRENT_PACKAGES_DIR}/tools/${PORT}/bin/qt.conf) # This makes the tools at least useable for release
         set(CURRENT_INSTALLED_DIR "${CURRENT_INSTALLED_DIR_BACKUP}")
-        
+
         vcpkg_copy_tool_dependencies("${CURRENT_PACKAGES_DIR}/tools/${PORT}/bin")
         if(VCPKG_TARGET_IS_WINDOWS AND VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
             file(GLOB_RECURSE DLL_DEPS_AVAIL "${CURRENT_INSTALLED_DIR}/tools/qt5/bin/*.dll")
@@ -99,14 +100,14 @@ function(qt_build_submodule SOURCE_PATH)
             endforeach()
         endif()
     endif()
-    
+
     #This should be removed if somehow possible
     if(EXISTS "${CURRENT_PACKAGES_DIR}/tools/qt5/debug/bin")
         set(CURRENT_INSTALLED_DIR_BACKUP "${CURRENT_INSTALLED_DIR}")
         set(CURRENT_INSTALLED_DIR "./../../../.." ) # Making the qt.conf relative and not absolute
         configure_file(${CURRENT_INSTALLED_DIR_BACKUP}/tools/qt5/qt_debug.conf ${CURRENT_PACKAGES_DIR}/tools/${PORT}/debug/bin/qt.conf) # This makes the tools at least useable for release
         set(CURRENT_INSTALLED_DIR "${CURRENT_INSTALLED_DIR_BACKUP}")
-        
+
         vcpkg_copy_tool_dependencies("${CURRENT_PACKAGES_DIR}/tools/${PORT}/debug/bin")
         if(VCPKG_TARGET_IS_WINDOWS AND VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
             file(GLOB_RECURSE DLL_DEPS_AVAIL "${CURRENT_INSTALLED_DIR}/tools/qt5/debug/bin/*.dll")
@@ -122,5 +123,5 @@ function(qt_build_submodule SOURCE_PATH)
             endforeach()
         endif()
     endif()
-    
+
 endfunction()

ports/qt5-base/portfile.cmake

@@ -1,19 +1,11 @@
 vcpkg_buildpath_length_warning(37)
 
 if(VCPKG_LIBRARY_LINKAGE STREQUAL "static")
-    option(QT_OPENSSL_LINK "Link against OpenSSL at compile-time." ON)
+    set(QT_OPENSSL_LINK_DEFAULT ON)
 else()
-    option(QT_OPENSSL_LINK "Link against OpenSSL at compile-time." OFF)
+    set(QT_OPENSSL_LINK_DEFAULT OFF)
 endif()
-
-if(VCPKG_LIBRARY_LINKAGE STREQUAL "static")
-    option(QT_MYSQL_PLUGIN "Create MySQL plugin" OFF)
-else()
-    if ("mysqlplugin" IN_LIST FEATURES)
-        option(QT_MYSQL_PLUGIN "Create MySQL plugin" ON)
-    endif()
-endif()
-
+option(QT_OPENSSL_LINK "Link against OpenSSL at compile-time." ${QT_OPENSSL_LINK_DEFAULT})
 
 if (VCPKG_TARGET_IS_LINUX)
     message(WARNING "qt5-base currently requires some packages from the system package manager, see https://doc.qt.io/qt-5/linux-requirements.html")
@@ -45,9 +37,17 @@ else()
     )
 endif()
 
-set(WITH_PGSQL OFF)
+set(WITH_PGSQL_PLUGIN OFF)
 if("postgresqlplugin" IN_LIST FEATURES)
-    set(WITH_PGSQL ON)
+    set(WITH_PGSQL_PLUGIN ON)
+endif()
+
+set(WITH_MYSQL_PLUGIN OFF)
+if ("mysqlplugin" IN_LIST FEATURES)
+    set(WITH_MYSQL_PLUGIN  ON)
+endif()
+if(WITH_MYSQL_PLUGIN AND NOT VCPKG_TARGET_IS_WINDOWS)
+    message(WARNING "${PORT} is currently not setup to support feature 'mysqlplugin' on platforms other than windows. Feel free to open up a PR to fix it!")
 endif()
 
 include(qt_port_functions)
@@ -121,31 +121,33 @@ list(APPEND CORE_OPTIONS
     -system-zlib
     -system-libjpeg
     -system-libpng
-    -system-freetype # static builds require to also link its dependent bzip!
+    -system-freetype
     -system-pcre
     -system-doubleconversion
     -system-sqlite
     -system-harfbuzz
     -icu
     -no-vulkan
-    -no-angle)      # Qt does not need to build angle. VCPKG will build angle!
+    -no-angle # Qt does not need to build angle. VCPKG will build angle!
+    -no-glib
+    )
 
 if(QT_OPENSSL_LINK)
     list(APPEND CORE_OPTIONS -openssl-linked)
 endif()
 
-if(WITH_PGSQL)
+if(WITH_PGSQL_PLUGIN)
     list(APPEND CORE_OPTIONS -sql-psql)
 else()
     list(APPEND CORE_OPTIONS -no-sql-psql)
 endif()
-
-if(VCPKG_TARGET_IS_WINDOWS)
-    if(QT_MYSQL_PLUGIN)
-        list(APPEND CORE_OPTIONS -sql-mysql)
-    endif()
+if(WITH_MYSQL_PLUGIN)
+    list(APPEND CORE_OPTIONS -sql-mysql)
+else()
+    list(APPEND CORE_OPTIONS -no-sql-mysql)
 endif()
 
+
 find_library(ZLIB_RELEASE NAMES z zlib PATHS "${CURRENT_INSTALLED_DIR}/lib" NO_DEFAULT_PATH)
 find_library(ZLIB_DEBUG NAMES z zlib zd zlibd PATHS "${CURRENT_INSTALLED_DIR}/debug/lib" NO_DEFAULT_PATH)
 find_library(JPEG_RELEASE NAMES jpeg jpeg-static PATHS "${CURRENT_INSTALLED_DIR}/lib" NO_DEFAULT_PATH)
@@ -202,7 +204,6 @@ if(VCPKG_TARGET_IS_WINDOWS)
     set(ICU_DEBUG "${ICU_DEBUG} Advapi32.lib" )
 endif()
 
-
 find_library(FONTCONFIG_RELEASE NAMES fontconfig PATHS "${CURRENT_INSTALLED_DIR}/lib" NO_DEFAULT_PATH)
 find_library(FONTCONFIG_DEBUG NAMES fontconfig PATHS "${CURRENT_INSTALLED_DIR}/debug/lib" NO_DEFAULT_PATH)
 find_library(EXPAT_RELEASE NAMES expat PATHS "${CURRENT_INSTALLED_DIR}/lib" NO_DEFAULT_PATH)
@@ -222,13 +223,7 @@ set(FREETYPE_RELEASE_ALL "${FREETYPE_RELEASE} ${BZ2_RELEASE} ${LIBPNG_RELEASE} $
 set(FREETYPE_DEBUG_ALL "${FREETYPE_DEBUG} ${BZ2_DEBUG} ${LIBPNG_DEBUG} ${ZLIB_DEBUG} ${BROTLI_DEC_DEBUG} ${BROTLI_COMMON_DEBUG}")
 
 # If HarfBuzz is built with GLib enabled, it must be statically link
-set(GLIB_LIB_VERSION 2.0)
-find_library(GLIB_RELEASE NAMES glib-${GLIB_LIB_VERSION} PATHS "${CURRENT_INSTALLED_DIR}/lib" NO_DEFAULT_PATH)
-find_library(GLIB_DEBUG NAMES glib-${GLIB_LIB_VERSION} PATHS "${CURRENT_INSTALLED_DIR}/debug/lib" NO_DEFAULT_PATH)
-if(GLIB_RELEASE MATCHES "-NOTFOUND" OR GLIB_DEBUG MATCHES "-NOTFOUND")
-    set(GLIB_RELEASE "")
-    set(GLIB_DEBUG "")
-endif()
+x_vcpkg_pkgconfig_get_modules(PREFIX harfbuzz MODULES harfbuzz LIBRARIES)
 
 set(RELEASE_OPTIONS
             "LIBJPEG_LIBS=${JPEG_RELEASE}"
@@ -266,23 +261,23 @@ if(VCPKG_TARGET_IS_WINDOWS)
     endif()
     list(APPEND RELEASE_OPTIONS
             "SQLITE_LIBS=${SQLITE_RELEASE}"
-            "HARFBUZZ_LIBS=${HARFBUZZ_RELEASE} ${FREETYPE_RELEASE_ALL}"
+            "HARFBUZZ_LIBS=${harfbuzz_LIBRARIES_RELEASE}"
             "OPENSSL_LIBS=${SSL_RELEASE} ${EAY_RELEASE} ws2_32.lib secur32.lib advapi32.lib shell32.lib crypt32.lib user32.lib gdi32.lib"
         )
 
     list(APPEND DEBUG_OPTIONS
             "SQLITE_LIBS=${SQLITE_DEBUG}"
-            "HARFBUZZ_LIBS=${HARFBUZZ_DEBUG} ${FREETYPE_DEBUG_ALL}"
+            "HARFBUZZ_LIBS=${harfbuzz_LIBRARIES_DEBUG}"
             "OPENSSL_LIBS=${SSL_DEBUG} ${EAY_DEBUG} ws2_32.lib secur32.lib advapi32.lib shell32.lib crypt32.lib user32.lib gdi32.lib"
         )
-    if(WITH_PGSQL)
+    if(WITH_PGSQL_PLUGIN)
         list(APPEND RELEASE_OPTIONS "PSQL_LIBS=${PSQL_RELEASE} ${PSQL_PORT_RELEASE} ${PSQL_COMMON_RELEASE} ${SSL_RELEASE} ${EAY_RELEASE} ws2_32.lib secur32.lib advapi32.lib shell32.lib crypt32.lib user32.lib gdi32.lib")
         list(APPEND DEBUG_OPTIONS "PSQL_LIBS=${PSQL_DEBUG} ${PSQL_PORT_DEBUG} ${PSQL_COMMON_DEBUG} ${SSL_DEBUG} ${EAY_DEBUG} ws2_32.lib secur32.lib advapi32.lib shell32.lib crypt32.lib user32.lib gdi32.lib")
     endif()
-    if (QT_MYSQL_PLUGIN)
+    if (WITH_MYSQL_PLUGIN)
         list(APPEND RELEASE_OPTIONS "MYSQL_LIBS=${MYSQL_RELEASE}")
         list(APPEND DEBUG_OPTIONS "MYSQL_LIBS=${MYSQL_DEBUG}")
-    endif(QT_MYSQL_PLUGIN)
+    endif(WITH_MYSQL_PLUGIN)
 
 elseif(VCPKG_TARGET_IS_LINUX)
     list(APPEND CORE_OPTIONS -fontconfig -xcb-xlib -xcb -linuxfb)
@@ -291,17 +286,17 @@ elseif(VCPKG_TARGET_IS_LINUX)
     endif()
     list(APPEND RELEASE_OPTIONS
             "SQLITE_LIBS=${SQLITE_RELEASE} -ldl -lpthread"
-            "HARFBUZZ_LIBS=${HARFBUZZ_RELEASE} ${FREETYPE_RELEASE_ALL} ${GLIB_RELEASE} -lpthread"
+            "HARFBUZZ_LIBS=${harfbuzz_LIBRARIES_RELEASE}"
             "OPENSSL_LIBS=${SSL_RELEASE} ${EAY_RELEASE} -ldl -lpthread"
             "FONTCONFIG_LIBS=${FONTCONFIG_RELEASE} ${FREETYPE_RELEASE} ${EXPAT_RELEASE} -luuid"
         )
     list(APPEND DEBUG_OPTIONS
             "SQLITE_LIBS=${SQLITE_DEBUG} -ldl -lpthread"
-            "HARFBUZZ_LIBS=${HARFBUZZ_DEBUG} ${FREETYPE_DEBUG_ALL} ${GLIB_DEBUG} -lpthread"
+            "HARFBUZZ_LIBS=${harfbuzz_LIBRARIES_DEBUG}"
             "OPENSSL_LIBS=${SSL_DEBUG} ${EAY_DEBUG} -ldl -lpthread"
             "FONTCONFIG_LIBS=${FONTCONFIG_DEBUG} ${FREETYPE_DEBUG} ${EXPAT_DEBUG} -luuid"
         )
-    if(WITH_PGSQL)
+    if(WITH_PGSQL_PLUGIN)
         list(APPEND RELEASE_OPTIONS "PSQL_LIBS=${PSQL_RELEASE} ${PSQL_PORT_RELEASE} ${PSQL_TYPES_RELEASE} ${PSQL_COMMON_RELEASE} ${SSL_RELEASE} ${EAY_RELEASE} -ldl -lpthread")
         list(APPEND DEBUG_OPTIONS "PSQL_LIBS=${PSQL_DEBUG} ${PSQL_PORT_DEBUG} ${PSQL_TYPES_DEBUG} ${PSQL_COMMON_DEBUG} ${SSL_DEBUG} ${EAY_DEBUG} -ldl -lpthread")
     endif()
@@ -331,18 +326,18 @@ elseif(VCPKG_TARGET_IS_OSX)
     #list(APPEND QT_PLATFORM_CONFIGURE_OPTIONS HOST_PLATFORM ${TARGET_MKSPEC})
     list(APPEND RELEASE_OPTIONS
             "SQLITE_LIBS=${SQLITE_RELEASE} -ldl -lpthread"
-            "HARFBUZZ_LIBS=${HARFBUZZ_RELEASE} ${FREETYPE_RELEASE_ALL} -framework ApplicationServices"
+            "HARFBUZZ_LIBS=${harfbuzz_LIBRARIES_RELEASE} -framework ApplicationServices"
             "OPENSSL_LIBS=${SSL_RELEASE} ${EAY_RELEASE} -ldl -lpthread"
             "FONTCONFIG_LIBS=${FONTCONFIG_RELEASE} ${FREETYPE_RELEASE} ${EXPAT_RELEASE} -liconv"
         )
     list(APPEND DEBUG_OPTIONS
             "SQLITE_LIBS=${SQLITE_DEBUG} -ldl -lpthread"
-            "HARFBUZZ_LIBS=${HARFBUZZ_DEBUG} ${FREETYPE_DEBUG_ALL} -framework ApplicationServices"
+            "HARFBUZZ_LIBS=${harfbuzz_LIBRARIES_DEBUG} -framework ApplicationServices"
             "OPENSSL_LIBS=${SSL_DEBUG} ${EAY_DEBUG} -ldl -lpthread"
             "FONTCONFIG_LIBS=${FONTCONFIG_DEBUG} ${FREETYPE_DEBUG} ${EXPAT_DEBUG} -liconv"
         )
 
-    if(WITH_PGSQL)
+    if(WITH_PGSQL_PLUGIN)
         list(APPEND RELEASE_OPTIONS "PSQL_LIBS=${PSQL_RELEASE} ${PSQL_PORT_RELEASE} ${PSQL_TYPES_RELEASE} ${PSQL_COMMON_RELEASE} ${SSL_RELEASE} ${EAY_RELEASE} -ldl -lpthread")
         list(APPEND DEBUG_OPTIONS "PSQL_LIBS=${PSQL_DEBUG} ${PSQL_PORT_DEBUG} ${PSQL_TYPES_DEBUG} ${PSQL_COMMON_DEBUG} ${SSL_DEBUG} ${EAY_DEBUG} -ldl -lpthread")
     endif()

ports/qt5-base/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "qt5-base",
   "version-string": "5.15.2",
-  "port-version": 3,
+  "port-version": 4,
   "description": "Qt5 Application Framework Base Module. Includes Core, GUI, Widgets, Networking, SQL, Concurrent and other essential qt components.",
   "homepage": "https://www.qt.io/",
   "dependencies": [
@@ -26,6 +26,10 @@
     "openssl",
     "pcre2",
     "sqlite3",
+    {
+      "name": "vcpkg-pkgconfig-get-modules",
+      "host": true
+    },
     "zlib",
     "zstd"
   ],

ports/vcpkg-pkgconfig-get-modules/README.md

@@ -0,0 +1,6 @@
+# vcpkg-pkgconfig-get-modules
+
+**Experimental: will change or be removed at any time**
+
+`vcpkg-pkgconfig-get-modules` provides `x_vcpkg_pkgconfig_get_modules()`, a function which simplifies calling
+`pkg-config` in portfiles in order to gather dependencies for exotic buildsystems.