From: Nathan Moinvaziri <nathan@nathanm.com>
Date: Sat, 19 Sep 2020 01:41:45 +0000 (-0700)
Subject: Check if input variables are defined in cmake scripts.
X-Git-Tag: 1.9.9-b1~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bafc7db8fe601e8b3408795f9dd34ed1044a9213;p=thirdparty%2Fzlib-ng.git

Check if input variables are defined in cmake scripts.
---

diff --git a/cmake/run-and-compare.cmake b/cmake/run-and-compare.cmake
index 2a6b14f07..8a4c750d1 100644
--- a/cmake/run-and-compare.cmake
+++ b/cmake/run-and-compare.cmake
@@ -1,4 +1,4 @@
-if(NOT OUTPUT OR NOT COMPARE OR NOT COMMAND)
+if(NOT DEFINED OUTPUT OR NOT DEFINED COMPARE OR NOT DEFINED COMMAND)
     message(FATAL_ERROR "Run and compare arguments missing")
 endif()
 
diff --git a/cmake/run-and-redirect.cmake b/cmake/run-and-redirect.cmake
index 50eee981d..e55fc3a43 100644
--- a/cmake/run-and-redirect.cmake
+++ b/cmake/run-and-redirect.cmake
@@ -1,5 +1,5 @@
 # If no output is specified, discard output
-if(NOT OUTPUT)
+if(NOT DEFINED OUTPUT)
     if(WIN32)
         set(OUTPUT NUL)
     else()
diff --git a/cmake/test-compress.cmake b/cmake/test-compress.cmake
index d2a7f33e5..76d45b130 100644
--- a/cmake/test-compress.cmake
+++ b/cmake/test-compress.cmake
@@ -3,21 +3,21 @@ if(TARGET)
     set(DECOMPRESS_TARGET ${TARGET})
 endif()
 
-if(NOT INPUT OR NOT COMPRESS_TARGET OR NOT DECOMPRESS_TARGET)
+if(NOT DEFINED INPUT OR NOT DEFINED COMPRESS_TARGET OR NOT DEFINED DECOMPRESS_TARGET)
     message(FATAL_ERROR "Compress test arguments missing")
 endif()
 
 # Set default values
-if(NOT COMPRESS_ARGS)
+if(NOT DEFINED COMPRESS_ARGS)
     set(COMPRESS_ARGS -c -k)
 endif()
-if(NOT DECOMPRESS_ARGS)
+if(NOT DEFINED DECOMPRESS_ARGS)
     set(DECOMPRESS_ARGS -d -c)
 endif()
-if(NOT GZIP_VERIFY)
+if(NOT DEFINED GZIP_VERIFY)
     set(GZIP_VERIFY ON)
 endif()
-if(NOT SUCCESS_EXIT)
+if(NOT DEFINED SUCCESS_EXIT)
     set(SUCCESS_EXIT 0)
 endif()