Index: hotshots_2.2.0+git20181207/HotShots.pro
===================================================================
--- hotshots_2.2.0+git20181207.orig/HotShots.pro
+++ hotshots_2.2.0+git20181207/HotShots.pro
@@ -10,7 +10,7 @@ TARGET = hotshots
 TEMPLATE = app
 
 # directories setup
-isEmpty( INSTALL_PREFIX )  : INSTALL_PREFIX  = /usr/local
+isEmpty( INSTALL_PREFIX )  : INSTALL_PREFIX  = /usr
 
 isEmpty( INSTALL_BINDIR )  : INSTALL_BINDIR  = $$INSTALL_PREFIX/bin
 isEmpty( INSTALL_LIBDIR )  {
@@ -256,7 +256,7 @@ TRANSLATIONS += lang/hotshots_gl.ts # Ga
 
 macx:ICON = res/hotshots.icns
 macx:QMAKE_INFO_PLIST =  ./Info.plist
-macx: INCLUDEPATH += /usr/local/include
+macx: INCLUDEPATH += /usr/include
 macx:QMAKE_POST_LINK += ./postbuild-macx.sh
 
 win32:RC_FILE = res/hotshots.rc
@@ -288,7 +288,7 @@ INCLUDEPATH += \
 win32:INCLUDEPATH += src/3rdparty/qxt
 macx:INCLUDEPATH += src/3rdparty/qxt
 !isEmpty(BUNDLE):INCLUDEPATH += src/3rdparty/qxt
-unix:!macx:INCLUDEPATH += /usr/include/qxt/QxtGui /usr/include/qxt/QxtCore /usr/include/QxtGui /usr/include/QxtCore /usr/local/Qxt/include/QxtGui /usr/local/Qxt/include/QxtCore
+unix:!macx:INCLUDEPATH += /usr/include/qxt/QxtGui /usr/include/qxt/QxtCore /usr/include/QxtGui /usr/include/QxtCore /usr/Qxt/include/QxtGui /usr/Qxt/include/QxtCore
 
 win32|os2:DEFINES += QXT_STATIC Q_WW_STATIC
 
