From: Steve Lhomme <robux4@ycbcr.xyz>
Date: Thu, 25 May 2023 09:33:23 +0000 (+0200)
Subject: Fix build error when cross-compiling for Windows
X-Git-Tag: v3.7.0~40
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aaf60eb0f14a4b09b3037c0809411baa63ca8781;p=thirdparty%2Flibarchive.git

Fix build error when cross-compiling for Windows

CHECK_C_SOURCE_RUNS generates a build error when cross-compiling.

ZLIB_WINAPI is the only one tested. When the run test fails, it's tested again
with just a compilation.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index dbb95e34d..f0bbfd02c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -370,7 +370,11 @@ MACRO (TRY_MACRO_FOR_LIBRARY INCLUDES LIBRARIES
       IF("${TRY_TYPE}" MATCHES "COMPILES")
         CHECK_C_SOURCE_COMPILES("${SAMPLE_SOURCE}" ${VAR})
       ELSEIF("${TRY_TYPE}" MATCHES "RUNS")
-        CHECK_C_SOURCE_RUNS("${SAMPLE_SOURCE}" ${VAR})
+        IF(CMAKE_CROSSCOMPILING)
+          MESSAGE(WARNING "Cannot test run \"${VAR}\" when cross-compiling")
+        ELSE(CMAKE_CROSSCOMPILING)
+          CHECK_C_SOURCE_RUNS("${SAMPLE_SOURCE}" ${VAR})
+        ENDIF(CMAKE_CROSSCOMPILING)
       ELSE("${TRY_TYPE}" MATCHES "COMPILES")
         MESSAGE(FATAL_ERROR "UNKNOWN KEYWORD \"${TRY_TYPE}\" FOR TRY_TYPE")
       ENDIF("${TRY_TYPE}" MATCHES "COMPILES")