[libc-commits] [libc] Skip startup target for SPIRV target in libc install dependencies (PR #198740)

[via libc-commits]

https://github.com/jinge90 created https://github.com/llvm/llvm-project/pull/198740

We skip startup target for SPIRV build in https://github.com/llvm/llvm-project/pull/197381 but missed removing it from "install-libc" target dependencies, this will lead to cmake configure error when trying to install libc for SPIRV target, the error message is:
ninja: error: 'libc/lib/libc-startup', needed by 'libc/lib/CMakeFiles/install-libc', missing and no known rule to make it
We need to add startup target back when it is supported by SPIRV target.

>From d62c70010fafb16a889367168044ec48430bae19 Mon Sep 17 00:00:00 2001
From: jinge90 <ge.jin at intel.com>
Date: Wed, 20 May 2026 17:50:17 +0800
Subject: [PATCH] Skip startup target for SPIRV target in libc install
 dependencies

Signed-off-by: jinge90 <ge.jin at intel.com>
---
 libc/lib/CMakeLists.txt | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/libc/lib/CMakeLists.txt b/libc/lib/CMakeLists.txt
index 08026e937be94..c6b7aa4a47eb1 100644
--- a/libc/lib/CMakeLists.txt
+++ b/libc/lib/CMakeLists.txt
@@ -83,19 +83,21 @@ if(LLVM_LIBC_FULL_BUILD)
   set(header_install_target install-libc-headers)
 endif()
 
+set(install-libc-depends ${added_archive_targets}
+                         ${added_bitcode_targets}
+                         ${header_install_target})
+# TODO: Add startup_target to install-libc depend list when SPIRV64
+# supports it.
+if (NOT LIBC_TARGET_ARCHITECTURE_IS_SPIRV)
+  list(APPEND install-libc-depends ${startup_target})
+endif()
 add_custom_target(install-libc
-                  DEPENDS ${added_archive_targets}
-                          ${added_bitcode_targets}
-                          ${startup_target}
-                          ${header_install_target}
+                  DEPENDS ${install-libc-depends}
                   COMMAND "${CMAKE_COMMAND}"
                           -DCMAKE_INSTALL_COMPONENT=libc
                           -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
 add_custom_target(install-libc-stripped
-                  DEPENDS ${added_archive_targets}
-                          ${added_bitcode_targets}
-                          ${startup_target}
-                          ${header_install_target}
+                  DEPENDS ${install-libc-depends}
                   COMMAND "${CMAKE_COMMAND}"
                           -DCMAKE_INSTALL_COMPONENT=libc
                           -DCMAKE_INSTALL_DO_STRIP=1