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cmstd: Remove -isystem option for IBM i (OS400)

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Much like AIX, IBM i (OS identifier "OS400") implicitly adds `extern
"C"` around system header files included with the `-isystem` option.
Update the condition added by commit c688b401d3 (cmstd: Modernize CMake
system headers, 2019-08-04, v3.16.0-rc1~81^2~1) to treat `IBM i` as we
do AIX.
This commit is contained in:
ThePrez
2020-03-05 14:41:16 -05:00
committed by Brad King
parent b7d8c91822
commit 917db8163d
1 changed files with 1 additions and 1 deletions
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CMakeLists.txt
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@@ -368,7 +368,7 @@ macro (CMAKE_BUILD_UTILITIES)
# Setup third-party libraries.
# Everything in the tree should be able to include files from the
# Utilities directory.
if (CMAKE_SYSTEM_NAME STREQUAL "AIX" AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
if ((CMAKE_SYSTEM_NAME STREQUAL "AIX" OR CMAKE_SYSTEM_NAME STREQUAL "OS400") AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# using -isystem option generate error "template with C linkage"
include_directories("${CMake_SOURCE_DIR}/Utilities/std")
else()