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--- common/qt5-pie.m4.orig 2018-12-22 20:56:34.850352000 +0100
+++ common/qt5-pie.m4 2018-12-22 20:56:34.850515000 +0100
@@ -0,0 +1,27 @@
+AC_DEFUN([AC_AVAHI_QT_ADD_PIC_IF_NEEDED],
+[
+ AC_LANG_PUSH([C++])
+ save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $QT5_CFLAGS"
+ AC_MSG_CHECKING([whether Qt works without -fPIC])
+ AC_PREPROC_IFELSE(
+ [AC_LANG_SOURCE([[#include <QtCore>]])],
+ [AC_MSG_RESULT(yes)],
+ [
+ AC_MSG_RESULT(no)
+ AC_MSG_CHECKING([whether Qt works with -fPIC])
+ CPPFLAGS="$CPPFLAGS -fPIC"
+ AC_PREPROC_IFELSE(
+ [AC_LANG_SOURCE([[#include <QtCore>]])],
+ [
+ AC_MSG_RESULT(yes)
+ QT5_CFLAGS="$QT5_CFLAGS -fPIC"
+ ],
+ [
+ AC_MSG_RESULT(no)
+ AC_MSG_ERROR(Couldn't compile Qt without -fPIC nor with -fPIC)
+ ])
+ ])
+ CPPFLAGS="$save_CPPFLAGS"
+ AC_LANG_POP([C++])
+])
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