gstreamer-1-0 not found on Mac

[mb79]

Hi,

Disclaimer: this project runs fine on linux... the problem happens on mac only.

I have installed all libs with brew:

$ brew list |grep gst
gst-libav
gst-plugins-bad
gst-plugins-base
gst-plugins-good
gst-plugins-ugly
gstreamer

my project file:

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

DEFINES += QT_DEPRECATED_WARNINGS

SOURCES += \
    main.cpp \
    mainwindow.cpp

HEADERS += \
    mainwindow.h

CONFIG += link_pkgconfig

PKGCONFIG += gstreamer-1.0 \
        glib-2.0 \
        gobject-2.0 \
        gio-2.0

unix: LIBS += -L/usr/lib/i386-linux-gnu/ -lgstvideo-1.0
unix: INCLUDEPATH += \
    /usr/include/gstreamer-1.0 \
    /usr/include/glib-2.0/ \
    /usr/lib/x86_64-linux-gnu/glib-2.0/include/

mac: LIBS += -L /usr/local/Cellar/gstreamer/1.16.2/lib -lgstvideo-1.0
mac: INCLUDEPATH += \
    /usr/local/Cellar/gstreamer/1.16.2/include/gstreamer-1.0 \
    /usr/local/Cellar/gst-plugins-base/1.16.2/include/gstreamer-1.0 \
    /usr/local/Cellar/glib/2.64.0/include/glib-2.0

FORMS += \
    mainwindow.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

The problem happens when I try to compile & run that this error shows on the compile output:

Project ERROR: gstreamer-1.0 development package not found

The weird thing is that pkg-config finds gstreamer when I run it manually on bash:

$ pkg-config --cflags gstreamer-1.0
-I/usr/local/Cellar/libffi/3.2.1/lib/libffi-3.2.1/include -I/usr/local/Cellar/gstreamer/1.16.2/include/gstreamer-1.0 -I/usr/local/Cellar/glib/2.64.0/include -I/usr/local/Cellar/glib/2.64.0/include/glib-2.0 -I/usr/local/Cellar/glib/2.64.0/lib/glib-2.0/include -I/usr/local/opt/gettext/include -I/usr/local/Cellar/pcre/8.44/include

Any help appreciated!

[jsulm]

@mb79 I'm not a MacOS expert, but I don't think Qt uses GStreamer on MacOS.

[mb79]

@jsulm Thanks. You are right, it does not use it by default, but regardless of that I can use gstreamer pipelines with Qt, as one would do with any other external library.

[mb79]

Found the solution for my case.
Just add the following to the .pro file:

mac {
    PKG_CONFIG = /usr/local/bin/pkg-config
}

I would suggest to have this coming by default or better documented. Maybe it's me that missed it somewhere, but it should be more straighforward.