Simplified from https://cgit.kde.org/soprano.git/commit?id=4150d7525dc80b3f505f670fdde2ff58abd5d475
--- sopranoclient.pc.cmake.orig	2013-10-09 12:22:28.000000000 -0500
+++ sopranoclient.pc.cmake	2018-01-26 07:06:02.000000000 -0600
@@ -9,4 +9,4 @@
 Requires: QtCore
 Version: @CMAKE_SOPRANO_VERSION_STRING@
 Libs: -L@LIB_DESTINATION@ -lsopranoclient
-Cflags: -I@INCLUDE_INSTALL_DIR@ -@INCLUDE_INSTALL_DIR@/soprano
+Cflags: -I@INCLUDE_INSTALL_DIR@ -I@INCLUDE_INSTALL_DIR@/soprano
--- sopranoindex.pc.cmake.orig	2013-10-09 12:22:28.000000000 -0500
+++ sopranoindex.pc.cmake	2018-01-26 07:05:59.000000000 -0600
@@ -9,4 +9,4 @@
 Requires: QtCore
 Version: @CMAKE_SOPRANO_VERSION_STRING@
 Libs: -L@LIB_DESTINATION@ -lsopranoindex
-Cflags: -I@INCLUDE_INSTALL_DIR@ -@INCLUDE_INSTALL_DIR@/soprano
+Cflags: -I@INCLUDE_INSTALL_DIR@ -I@INCLUDE_INSTALL_DIR@/soprano
--- sopranoserver.pc.cmake.orig	2013-10-09 12:22:28.000000000 -0500
+++ sopranoserver.pc.cmake	2018-01-26 07:05:55.000000000 -0600
@@ -9,4 +9,4 @@
 Requires: QtCore
 Version: @CMAKE_SOPRANO_VERSION_STRING@
 Libs: -L@LIB_DESTINATION@ -lsopranoserver
-Cflags: -I@INCLUDE_INSTALL_DIR@ -@INCLUDE_INSTALL_DIR@/soprano
+Cflags: -I@INCLUDE_INSTALL_DIR@ -I@INCLUDE_INSTALL_DIR@/soprano