From 6b333c9c99758b71e7e987ffd4959fdc874396ca Mon Sep 17 00:00:00 2001
From: Simon Davies <simongdavies@users.noreply.github.com>
Date: Tue, 12 Nov 2024 13:14:32 +0000
Subject: [PATCH] Update clang install (#1)

Ensures that all required links are present even if clang is already installed

Signed-off-by: Simon Davies <simongdavies@users.noreply.github.com>
---
 action.yml | 73 +++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 67 insertions(+), 6 deletions(-)

diff --git a/action.yml b/action.yml
index 13b0d02..10fff35 100644
--- a/action.yml
+++ b/action.yml
@@ -56,13 +56,74 @@ runs:
             wget https://apt.llvm.org/llvm.sh 
             chmod +x ./llvm.sh
             sudo ./llvm.sh 17 all
-            sudo ln -s /usr/lib/llvm-17/bin/clang-cl /usr/bin/clang-cl
-            sudo ln -s /usr/lib/llvm-17/bin/clang /usr/bin/clang
-            sudo ln -s /usr/lib/llvm-17/bin/llvm-lib /usr/bin/llvm-lib
-            sudo ln -s /usr/lib/llvm-17/bin/lld-link /usr/bin/lld-link
-            sudo ln -s /usr/lib/llvm-17/bin/llvm-ml /usr/bin/llvm-ml
-            sudo ln -s /usr/lib/llvm-17/bin/ld.lld /usr/bin/ld.lld
           fi
+
+          if [ -f /usr/lib/llvm-17/bin/clang-cl ]; then
+            if [ ! -L /usr/bin/clang-cl ]; then
+                sudo ln -s /usr/lib/llvm-17/bin/clang-cl /usr/bin/clang-cl
+            else
+                echo "clang-cl already linked"
+            fi 
+          else
+            echo "Error: /usr/lib/llvm-17/bin/clang-cl does not exist."
+            exit 1
+          fi
+
+          if [ -f /usr/lib/llvm-17/bin/clang ]; then
+            if [ ! -L /usr/bin/clang ]; then
+                sudo ln -s /usr/lib/llvm-17/bin/clang /usr/bin/clang
+            else
+                echo "clang already linked"
+            fi 
+          else
+            echo "Error: /usr/lib/llvm-17/bin/clang does not exist."
+            exit 1
+          fi
+
+          if [ -f /usr/lib/llvm-17/bin/llvm-lib ]; then
+            if [ ! -L /usr/bin/llvm-lib ]; then
+                sudo ln -s /usr/lib/llvm-17/bin/llvm-lib /usr/bin/llvm-lib
+            else
+                echo "llvm-lib already linked"
+            fi 
+          else
+            echo "Error: /usr/lib/llvm-17/bin/llvm-lib does not exist."
+            exit 1
+          fi
+
+          if [ -f /usr/lib/llvm-17/bin/lld-link ]; then
+            if [ ! -L /usr/bin/lld-link ]; then
+                sudo ln -s /usr/lib/llvm-17/bin/lld-link /usr/bin/lld-link
+            else
+                echo "lld-link already linked"
+            fi 
+          else
+            echo "Error: /usr/lib/llvm-17/bin/lld-link does not exist."
+            exit 1
+          fi
+
+          if [ -f /usr/lib/llvm-17/bin/llvm-ml ]; then
+            if [ ! -L /usr/bin/llvm-ml ]; then
+                sudo ln -s /usr/lib/llvm-17/bin/llvm-ml /usr/bin/llvm-ml
+            else
+                echo "llvm-ml already linked"
+            fi 
+          else
+            echo "Error: /usr/lib/llvm-17/bin/llvm-ml does not exist."
+            exit 1
+          fi
+
+          if [ -f /usr/lib/llvm-17/bin/ld.lld ]; then
+            if [ ! -L /usr/bin/ld.lld ]; then
+                sudo ln -s /usr/lib/llvm-17/bin/ld.lld /usr/bin/ld.lld
+            else
+                echo "ld.lld already linked"
+            fi 
+          else
+            echo "Error: /usr/lib/llvm-17/bin/ld.lld does not exist."
+            exit 1
+          fi
+
           clang-cl --version
           lld-link --version
           ld.lld --version