diff -rupN --no-dereference libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8/apps/CMakeLists.txt libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8-new/apps/CMakeLists.txt
--- libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8/apps/CMakeLists.txt	2020-04-05 18:40:29.000000000 +0200
+++ libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8-new/apps/CMakeLists.txt	2020-06-08 11:37:26.939014590 +0200
@@ -195,8 +195,8 @@ if(UNIX)
   if(WITH_PKGCONFIG)
 
     set(PKGCFG_PREFIX "${CMAKE_INSTALL_PREFIX}")
-    set(PKGCFG_INC_DIR "${LIBLAS_INCLUDE_SUBDIR}")
-    set(PKGCFG_LIB_DIR "${LIBLAS_LIB_SUBDIR}")
+    set(PKGCFG_INC_DIR "${CMAKE_INSTALL_PREFIX}/${LIBLAS_INCLUDE_SUBDIR}")
+    set(PKGCFG_LIB_DIR "${CMAKE_INSTALL_PREFIX}/${LIBLAS_LIB_SUBDIR}")
     set(PKGCFG_REQUIRES  "")
     set(PKGCFG_VERSION ${VERSION})
     set(PKGCFG_LINK_FLAGS "-llas -llas_c")
@@ -205,7 +205,7 @@ if(UNIX)
       set(PKGCFG_REQUIRES "${PKGCFG_REQUIRES} libxml-2.0")
     endif()
     if(GEOTIFF_FOUND)
-      set(PKGCFG_REQUIRES "${PKGCFG_REQUIRES} geotiff")
+      set(PKGCFG_REQUIRES "${PKGCFG_REQUIRES} libgeotiff")
     endif()
     #  if(WITH_GDAL)
     #    set(PKGCFG_INC_DIR "${PKGCFG_INC_DIR} ${GDAL_INCLUDE_DIR}")