[libc-commits] [libc] libc/cmake: don't fail if LLVM_VERSION_SUFFIX isn't defined (PR #126359)

[Sylvestre Ledru via libc-commits]

https://github.com/sylvestre created https://github.com/llvm/llvm-project/pull/126359

Closes: #126358

cc @samvangysegem



>From 06a48b6f0c2bee02dfae46419c4349e2bb457156 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre at debian.org>
Date: Sat, 8 Feb 2025 09:20:11 +0100
Subject: [PATCH] libc/cmake: don't fail if LLVM_VERSION_SUFFIX isn't defined

Closes: #126358
---
 libc/CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libc/CMakeLists.txt b/libc/CMakeLists.txt
index 1c4c0cd5aa22ba..d44769721c918f 100644
--- a/libc/CMakeLists.txt
+++ b/libc/CMakeLists.txt
@@ -51,7 +51,11 @@ set(LIBC_KERNEL_HEADERS "/usr/include" CACHE STRING "Path to Linux kernel header
 # Defining a global namespace to enclose all libc functions.
 set(default_namespace "__llvm_libc")
 if(LLVM_VERSION_MAJOR)
-  string(REPLACE "-" "" NS_LLVM_VERSION_SUFFIX ${LLVM_VERSION_SUFFIX})
+  if(DEFINED LLVM_VERSION_SUFFIX AND NOT "${LLVM_VERSION_SUFFIX}" STREQUAL "")
+    string(REPLACE "-" "" NS_LLVM_VERSION_SUFFIX "${LLVM_VERSION_SUFFIX}")
+  else()
+    set(NS_LLVM_VERSION_SUFFIX "")
+  endif()
   set(default_namespace "__llvm_libc_${LLVM_VERSION_MAJOR}_${LLVM_VERSION_MINOR}_${LLVM_VERSION_PATCH}_${NS_LLVM_VERSION_SUFFIX}")
 endif()
 set(LIBC_NAMESPACE ${default_namespace}