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authorBrad King <brad.king@kitware.com>2018-03-14 18:04:12 (GMT)
committerBrad King <brad.king@kitware.com>2018-03-14 18:07:00 (GMT)
commit194b74daec04c46ab1ae3c5b18d51ae805a9dbe0 (patch)
tree7ac54240de71997d4d9a79fefb143c5769672c27 /Modules/CMakeCCompilerId.c.in
parentc5541cf0da1093635fea7da5a40e64e481b5477e (diff)
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XL: Fix C default level detection when invoked as 'cc'
The IBM XL C compiler does not define `__STDC__` when invoked as plain `cc` instead of `xlc`, so `CMAKE_C_STANDARD_COMPUTED_DEFAULT` does not get set and CMake fails. Teach CMake about the XL compiler's default C standard in this case. Fixes: #17649
Diffstat (limited to 'Modules/CMakeCCompilerId.c.in')
-rw-r--r--Modules/CMakeCCompilerId.c.in3
1 files changed, 2 insertions, 1 deletions
diff --git a/Modules/CMakeCCompilerId.c.in b/Modules/CMakeCCompilerId.c.in
index 10f7318..2f6bdb4 100644
--- a/Modules/CMakeCCompilerId.c.in
+++ b/Modules/CMakeCCompilerId.c.in
@@ -34,7 +34,8 @@ char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
@CMAKE_C_COMPILER_ID_ERROR_FOR_TEST@
#if !defined(__STDC__)
-# if defined(_MSC_VER) && !defined(__clang__)
+# if (defined(_MSC_VER) && !defined(__clang__)) \
+ || (defined(__ibmxl__) || defined(__IBMC__))
# define C_DIALECT "90"
# else
# define C_DIALECT