From b85e2bc17bab83b8fd3cd94c034e857b97def7ea Mon Sep 17 00:00:00 2001
From: Christian Kandeler <christian.kandeler@qt.io>
Date: Fri, 21 Jan 2022 16:50:25 +0100
Subject: [PATCH] ProjectExplorer: Do not set GCC install dir during
 auto-detection

The accessor has lazy evaluation built in, so no need to set the value
prematurely.
This reduces the amount of calls to the gcc binary at initial start-up
by a third, which corresponds to ~500 ms on my machine.

Change-Id: I35fb290c5f3e7572a129e4fdb1e4c8b12e766ad1
Reviewed-by: hjk <hjk@qt.io>
---
 src/plugins/projectexplorer/gcctoolchain.cpp | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index a983b14f1d8..31ae2f6819b 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -1177,9 +1177,6 @@ Toolchains GccToolChainFactory::autoDetectToolChain(const ToolChainDescription &
     const GccToolChain::DetectedAbisResult detectedAbis = guessGccAbi(localCompilerPath,
                                                                       systemEnvironment,
                                                                       macros);
-    const Utils::FilePath installDir = gccInstallDir(localCompilerPath,
-                                                     systemEnvironment);
-
     for (const Abi &abi : detectedAbis.supportedAbis) {
         std::unique_ptr<GccToolChain> tc(dynamic_cast<GccToolChain *>(create()));
         if (!tc)
@@ -1195,7 +1192,6 @@ Toolchains GccToolChainFactory::autoDetectToolChain(const ToolChainDescription &
         tc->setSupportedAbis(detectedAbis.supportedAbis);
         tc->setTargetAbi(abi);
         tc->setOriginalTargetTriple(detectedAbis.originalTargetTriple);
-        tc->setInstallDir(installDir);
         tc->setDisplayName(tc->defaultDisplayName()); // reset displayname
         if (!checker || checker(tc.get()))
             result.append(tc.release());