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authorZack Galbreath <zack.galbreath@kitware.com>2021-06-07 18:18:29 +0000
committerZack Galbreath <zack.galbreath@kitware.com>2021-06-07 19:25:09 +0000
commit590553f32246b374853c50cf7c30af3880ac02ea (patch)
treeb3ebca5035eb33d2df0997e99b5357cfcf3dd042 /Modules/CMakeCXXCompilerId.cpp.in
parented3aad97e3d3cb27637722fabb0ae3a5611daf5c (diff)
downloadcmake-590553f32246b374853c50cf7c30af3880ac02ea.tar.gz
Compilers: protect use of __has_include
If the compiler does not have __has_include, pretend the answer is always no
Diffstat (limited to 'Modules/CMakeCXXCompilerId.cpp.in')
-rw-r--r--Modules/CMakeCXXCompilerId.cpp.in6
1 files changed, 6 insertions, 0 deletions
diff --git a/Modules/CMakeCXXCompilerId.cpp.in b/Modules/CMakeCXXCompilerId.cpp.in
index a67caba2c3..7362a08374 100644
--- a/Modules/CMakeCXXCompilerId.cpp.in
+++ b/Modules/CMakeCXXCompilerId.cpp.in
@@ -5,6 +5,12 @@
# error "A C compiler has been selected for C++."
#endif
+#if !defined(__has_include)
+/* If the compiler does not have __has_include, pretend the answer is
+ always no. */
+# define __has_include(x) 0
+#endif
+
@CMAKE_CXX_COMPILER_ID_CONTENT@
/* Construct the string literal in pieces to prevent the source from