[libc-commits] [libc] [libc] Allow libc to build on Red Hat (PR #83517)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: None (jameshu15869)

<details>
<summary>Changes</summary>

Currently, `libc` fails when building on redhat because the triple format uses `redhat` instead of `linux` (The same problem as openSUSE). This PR changes `libc` to accept `redhat` as a valid Linux triple. 

---
Full diff: https://github.com/llvm/llvm-project/pull/83517.diff


1 Files Affected:

- (modified) libc/cmake/modules/LLVMLibCArchitectures.cmake (+4-4) 


``````````diff
diff --git a/libc/cmake/modules/LLVMLibCArchitectures.cmake b/libc/cmake/modules/LLVMLibCArchitectures.cmake
index 0dbc59ad643ac4..66acf95058bcb3 100644
--- a/libc/cmake/modules/LLVMLibCArchitectures.cmake
+++ b/libc/cmake/modules/LLVMLibCArchitectures.cmake
@@ -167,13 +167,13 @@ if(LIBC_TARGET_OS STREQUAL "baremetal")
   set(LIBC_TARGET_OS_IS_BAREMETAL TRUE)
 elseif(LIBC_TARGET_OS STREQUAL "linux")
   set(LIBC_TARGET_OS_IS_LINUX TRUE)
-elseif(LIBC_TARGET_OS STREQUAL "poky" OR LIBC_TARGET_OS STREQUAL "suse")
-  # poky are ustom Linux-base systems created by yocto. Since these are Linux
+elseif(LIBC_TARGET_OS STREQUAL "poky" OR LIBC_TARGET_OS STREQUAL "suse" OR LIBC_TARGET_OS STREQUAL "redhat")
+  # poky are custom Linux-base systems created by yocto. Since these are Linux
   # images, we change the LIBC_TARGET_OS to linux. This define is used to
   # include the right directories during compilation.
   #
-  # openSUSE uses different triple format which causes LIBC_TARGET_OS to be
-  # computed as "suse" instead of "linux".
+  # openSUSE and redhat use different triple format which causes LIBC_TARGET_OS
+  # to be computed as "suse" or "redhat" instead of "linux".
   set(LIBC_TARGET_OS_IS_LINUX TRUE)
   set(LIBC_TARGET_OS "linux")
 elseif(LIBC_TARGET_OS STREQUAL "darwin")

``````````

</details>


https://github.com/llvm/llvm-project/pull/83517