libtiff: Merge branch 'issue547' into 'master'

From d2f2dbc3922579c1b9053015afaf5657fa83d187 Mon Sep 17 00:00:00 2001
From: Roman <[EMAIL REDACTED]>
Date: Sun, 23 Apr 2023 13:49:35 +1000
Subject: [PATCH] do not install libtiff-4.pc when tiff-install is reset

---
 cmake/PkgConfig.cmake | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmake/PkgConfig.cmake b/cmake/PkgConfig.cmake
index ec4f5383..9a7842c4 100644
--- a/cmake/PkgConfig.cmake
+++ b/cmake/PkgConfig.cmake
@@ -63,5 +63,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libtiff-4.pc.in
         ${CMAKE_CURRENT_BINARY_DIR}/libtiff-4.pc @ONLY)
 
 # Install pkg-config file
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libtiff-4.pc
-        DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+if (tiff-install)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libtiff-4.pc
+            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+endif()
\ No newline at end of file