ENH: improve TRY_RUN() for crosscompiling: instead of just failing, it now

creates two cache variables, one for the RUN_RESULT, one for the RUN_OUTPUT
(if required), which can be set or preset by the user. It has now also two
new arguments: RUN_OUTPUT_VARIABLE and COMPILE_OUTPUT_VARIABLE (the old
OUTPUT_VARIABLE merges both), so if only COMPILE_OUTPUT_VARIABLE is used the
run time output of the TRY_RUN is unused and the user doesn't have to care
about the output when crosscompiling. This is now used in FindThreads.cmake,
CheckC/CXXSourceRuns.cmake and TestBigEndian.cmake, which used the output
only for the logfile (compile output is still there). Test/TryCompile/ now
also tests the behaviour of OUTPUT_VARIABLE, RUN_OUTPUT_VARIABLE and
COMPILE_OUTPUT_VARIABLE.

Alex

1 files changed, 3 insertions, 0 deletions

diff --git a/Tests/TryCompile/exit_with_error.c b/Tests/TryCompile/exit_with_error.c
index a9a283d..f3c523d 100644
--- a/Tests/TryCompile/exit_with_error.c
+++ b/Tests/TryCompile/exit_with_error.c
@@ -1,4 +1,7 @@
+#include <stdio.h>
+
 int main()
 {
+  printf("hello world\n");
   return -1;
 }