pkg-config use disabled globally

Iyaps

Hi All,

Currently I am cross-compiling the Qt into aarch64 system.
OS: Ubuntu 20.04
Qt version: 5.15.2

I have followed the below steps.

petalinux-build --sdk
petalinux-package --sysroot
Download qt-everywhere-src-5.15.2.tar.xz and extracted into a folder called ZYNQ_QT_INSTALL.
Executed below export commands.
$ export CROSS_COMPILE=/home/<username>/ZYNQ_QT_INSTALL/Qtbuild/qt-everywhere-src-5.15.2/qtbase/mkspecs/linux-aarch64-gnu-g++
$ export ZYNQ_QT_BUILD=/home/<username>/ZYNQ_QT_INSTALL/Qtbuild
$ export ZYNQ_QT_INSTALL=/home/<username>/ZYNQ_QT_INSTALL/Qtinstall
$ export PATH=$ZYNQ_QT_INSTALL/bin:$PATH
$ cd ZYNQ_QT_INSTALL/Qtbuild/qt-everywhere-src-5.15.2/
./configure -xplatform linux-aarch64-gnu-g++ -opensource -release -opengl es2 -confirm-license -nomake examples -sysroot /home/quest/crashavoidance/zcu104/crashavoidance/images/linux/sdk/sysroots/cortexa72-cortexa53-xilinx-linux -skip qtwebchannel -skip qtactiveqt -skip qtandroidextras -skip qtdeclarative -skip qtimageformats -skip qtmacextras -skip qtserialport -skip qtx11extras -skip qtxmlpatterns -skip qtconnectivity -skip qtdoc -skip qtgraphicaleffects -skip qtlocation -skip qtmultimedia -skip qtsensors -skip qttools -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwinextras -verbose -no-gif -no-libjpeg -no-mtdev -no-sql-db2 -no-sql-ibase -no-sql-mysql -no-sql-sqlite -qt-freetype -no-fontconfig -no-harfbuzz -no-cups -no-iconv -no-icu -no-eglfs -no-openssl -strip -hostprefix $ZYNQ_QT_INSTALL -extprefix $ZYNQ_QT_INSTALL/Qt5

At this step I am getting following errors.
Error 1:

main.cpp:(.text.startup+0x10): undefined reference to dlopen' /usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: main.cpp:(.text.startup+0x14): undefined reference to dlclose'
/usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: main.cpp:(.text.startup+0x20): undefined reference to dlsym' /usr/lib/gcc-cross/aarch64-linux-gnu/9/../../../../aarch64-linux-gnu/bin/ld: main.cpp:(.text.startup+0x24): undefined reference to dlerror'
collect2: error: ld returned 1 exit status
make: *** [Makefile:67: libdl] Error 1
=> source failed verification.

Error 2:

main.cpp:7:8: error: #error Intel CET not available
7 | # error Intel CET not available
| ^~~~~
make: *** [Makefile:167: main.o] Error 1

Error 3:

main.cpp:3:4: error: #error Symbolic function binding on this architecture may be broken, disabling it (see QTBUG-36129).
3 | # error Symbolic function binding on this architecture may be broken, disabling it (see QTBUG-36129).
| ^~~~~
make: *** [Makefile:187: main.o] Error 1

Error 4:

main.cpp:2:10: fatal error: zstd.h: No such file or directory
2 | #include <zstd.h>
| ^~~~~~~~
compilation terminated.
make: *** [Makefile:167: main.o] Error 1

Error 5:

main.cpp:8:12: fatal error: gssapi/gssapi.h: No such file or directory
8 | # include <gssapi/gssapi.h>
| ^~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:169: main.o] Error 1

Error 6:

main.cpp:2:10: fatal error: sybfront.h: No such file or directory
2 | #include <sybfront.h>
| ^~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:169: main.o] Error 1

Error 7:

/home/quest/CrashAvoidance/Reference/Qt/Qtbuild/qt-everywhere-src-5.15.2/qtgamepad/config.tests/sdl/main.cpp:37:10: fatal error: SDL.h: No such file or directory
37 | #include <SDL.h>
| ^~~~~~~
compilation terminated.
make: *** [Makefile:169: main.o] Error 1

Error 8:

/home/quest/CrashAvoidance/Reference/Qt/Qtbuild/qt-everywhere-src-5.15.2/qt3d/config.tests/fbx/main.cpp:29:10: fatal error: fbxsdk.h: No such file or directory
29 | #include <fbxsdk.h>
| ^~~~~~~~~~
compilation terminated.
make: *** [Makefile:169: main.o] Error 1

Error 9:

main.cpp:2:10: fatal error: flite/flite.h: No such file or directory
2 | #include <flite/flite.h>
| ^~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:169: main.o] Error 1

Error 10:

main.cpp:2:10: fatal error: libspeechd.h: No such file or directory
2 | #include <libspeechd.h>
| ^~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:169: main.o] Error 1

Error 11:

Note: The following modules are not being compiled in this configuration:
3dcore
3drender

ERROR: Feature 'opengles2' was enabled, but the pre-condition '(config.win32 && !features.opengl-dynamic) || (!config.watchos && !features.opengl-desktop && libs.opengl_es2)' failed.

ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.

While analysing the log i got below informations:
1. pkg-config use disabled globally. (Having doubt whether this is causing the issues)
=> source produced no result.

This is the configuration listed after getting error:
Configuration: cross_compile compile_examples enable_new_dtags largefile neon precompile_header shared shared rpath release c++11 c++14 c++17 c++1z concurrent dbus no-pkg-config reduce_exports stl
Build options:
Mode ................................... release
Optimize release build for size ........ no
Building shared libraries .............. yes
Using C standard ....................... C11
Using C++ standard ..................... C++17
Using ccache ........................... no
Using new DTAGS ........................ yes
Relocatable ............................ yes
Using precompiled headers .............. yes
Using LTCG ............................. no
Target compiler supports:
NEON ................................. yes
Build parts ............................ libs
Qt modules and options:
Qt Concurrent .......................... yes
Qt D-Bus ............................... yes
Qt D-Bus directly linked to libdbus .... no
Qt Gui ................................. yes
Qt Network ............................. yes
Qt Sql ................................. yes
Qt Testlib ............................. yes
Qt Widgets ............................. yes
Qt Xml ................................. yes
Support enabled for:
Using pkg-config ....................... no
udev ................................... no
Using system zlib ...................... no
Zstandard support ...................... no
Qt Core:
DoubleConversion ....................... yes
Using system DoubleConversion ........ no
GLib ................................... no
iconv .................................. no
ICU .................................... no
Built-in copy of the MIME database ..... yes
Tracing backend ........................ <none>
Logging backends:
journald ............................. no
syslog ............................... no
slog2 ................................ no
PCRE2 .................................. yes
Using system PCRE2 ................... no
Qt Network:
getifaddrs() ........................... yes
IPv6 ifname ............................ yes
libproxy ............................... no
Linux AF_NETLINK ....................... yes
OpenSSL ................................ no
Qt directly linked to OpenSSL ........ no
OpenSSL 1.1 ............................ no
DTLS ................................... no
OCSP-stapling .......................... no
SCTP ................................... no
Use system proxies ..................... yes
GSSAPI ................................. no
Qt Gui:
Accessibility .......................... yes
FreeType ............................... yes
Using system FreeType ................ no
HarfBuzz ............................... no
Using system HarfBuzz ................ no
Fontconfig ............................. no
Image formats:
GIF .................................. no
ICO .................................. yes
JPEG ................................. no
Using system libjpeg ............... no
PNG .................................. yes
Using system libpng ................ no
Text formats:
HtmlParser ........................... yes
CssParser ............................ yes
OdfWriter ............................ yes
MarkdownReader ....................... yes
Using system libmd4c ............... no
MarkdownWriter ....................... yes
EGL .................................... no
OpenVG ................................. no
OpenGL:
Desktop OpenGL ....................... no
OpenGL ES 2.0 ........................ no
OpenGL ES 3.0 ........................ no
OpenGL ES 3.1 ........................ no
OpenGL ES 3.2 ........................ no
Vulkan ................................. no
Session Management ..................... yes
Features used by QPA backends:
evdev .................................. yes
libinput ............................... no
INTEGRITY HID .......................... no
mtdev .................................. no
tslib .................................. no
xkbcommon .............................. no
X11 specific:
XLib ................................. no
XCB Xlib ............................. no
EGL on X11 ........................... no
xkbcommon-x11 ........................ no
QPA backends:
DirectFB ............................... no
EGLFS .................................. no
LinuxFB ................................ yes
VNC .................................... yes
Qt Sql:
SQL item models ........................ yes
Qt Widgets:
GTK+ ................................... no
Styles ................................. Fusion Windows
Qt PrintSupport:
CUPS ................................... no
Qt Sql Drivers:
DB2 (IBM) .............................. no
InterBase .............................. no
MySql .................................. no
OCI (Oracle) ........................... no
ODBC ................................... no
PostgreSQL ............................. no
SQLite2 ................................ no
SQLite ................................. no
Using system provided SQLite ......... no
TDS (Sybase) ........................... no
Qt Testlib:
Tester for item models ................. yes
Qt SerialBus:
Socket CAN ............................. yes
Socket CAN FD .......................... yes
SerialPort Support ..................... no
Qt Gamepad:
SDL2 ................................... no
Qt 3D GeometryLoaders:
Autodesk FBX ........................... no
Qt TextToSpeech:
Flite .................................. no
Flite with ALSA ........................ no
Speech Dispatcher ...................... no

Note: Also available for Linux: linux-clang linux-icc