diff --git a/src/plugins/debugger/breakpoint.cpp b/src/plugins/debugger/breakpoint.cpp
index 730f15b7172..94406bdb8fd 100644
--- a/src/plugins/debugger/breakpoint.cpp
+++ b/src/plugins/debugger/breakpoint.cpp
@@ -7,6 +7,7 @@
 
 #include <projectexplorer/abi.h>
 
+#include <utils/environment.h>
 #include <utils/fileutils.h>
 #include <utils/qtcassert.h>
 #include <utils/stringutils.h>
@@ -130,7 +131,7 @@ bool BreakpointParameters::isQmlFileAndLineBreakpoint() const
     if (type != BreakpointByFileAndLine)
         return false;
 
-    QString qmlExtensionString = QString::fromLocal8Bit(qgetenv("QTC_QMLDEBUGGER_FILEEXTENSIONS"));
+    QString qmlExtensionString = Utils::qtcEnvironmentVariable("QTC_QMLDEBUGGER_FILEEXTENSIONS");
     if (qmlExtensionString.isEmpty())
         qmlExtensionString = ".qml;.js;.mjs";
 
diff --git a/src/plugins/debugger/cdb/cdbengine.cpp b/src/plugins/debugger/cdb/cdbengine.cpp
index 7b2a2f56fb3..61ee6c9180a 100644
--- a/src/plugins/debugger/cdb/cdbengine.cpp
+++ b/src/plugins/debugger/cdb/cdbengine.cpp
@@ -42,6 +42,7 @@
 #include <texteditor/texteditor.h>
 
 #include <utils/checkablemessagebox.h>
+#include <utils/environment.h>
 #include <utils/fileutils.h>
 #include <utils/hostosinfo.h>
 #include <utils/processinterface.h>
@@ -421,12 +422,9 @@ void CdbEngine::setupEngine()
 
     static const char cdbExtensionPathVariableC[] = "_NT_DEBUGGER_EXTENSION_PATH";
     inferiorEnvironment.prependOrSet(cdbExtensionPathVariableC, extensionFi.absolutePath(), {";"});
-    const QByteArray oldCdbExtensionPath = qgetenv(cdbExtensionPathVariableC);
-    if (!oldCdbExtensionPath.isEmpty()) {
-        inferiorEnvironment.appendOrSet(cdbExtensionPathVariableC,
-                                        QString::fromLocal8Bit(oldCdbExtensionPath),
-                                        {";"});
-    }
+    const QString oldCdbExtensionPath = qtcEnvironmentVariable(cdbExtensionPathVariableC);
+    if (!oldCdbExtensionPath.isEmpty())
+        inferiorEnvironment.appendOrSet(cdbExtensionPathVariableC, oldCdbExtensionPath, {";"});
 
     m_process.setEnvironment(inferiorEnvironment);
     if (!sp.inferior.workingDirectory.isEmpty())
@@ -1051,7 +1049,7 @@ void CdbEngine::doUpdateLocals(const UpdateParameters &updateParameters)
         watchHandler()->appendFormatRequests(&cmd);
         watchHandler()->appendWatchersAndTooltipRequests(&cmd);
 
-        const static bool alwaysVerbose = qEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
+        const bool alwaysVerbose = qtcEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
         cmd.arg("passexceptions", alwaysVerbose);
         cmd.arg("fancy", s.useDebuggingHelpers.value());
         cmd.arg("autoderef", s.autoDerefPointers.value());
diff --git a/src/plugins/debugger/debuggeritemmanager.cpp b/src/plugins/debugger/debuggeritemmanager.cpp
index 34313aca602..b8892409e99 100644
--- a/src/plugins/debugger/debuggeritemmanager.cpp
+++ b/src/plugins/debugger/debuggeritemmanager.cpp
@@ -592,11 +592,9 @@ void DebuggerItemManagerPrivate::autoDetectCdbDebuggers()
 {
     FilePaths cdbs;
 
-    const QStringList programDirs = {
-        QString::fromLocal8Bit(qgetenv("ProgramFiles")),
-        QString::fromLocal8Bit(qgetenv("ProgramFiles(x86)")),
-        QString::fromLocal8Bit(qgetenv("ProgramW6432"))
-    };
+    const QStringList programDirs = {qtcEnvironmentVariable("ProgramFiles"),
+                                     qtcEnvironmentVariable("ProgramFiles(x86)"),
+                                     qtcEnvironmentVariable("ProgramW6432")};
 
     QFileInfoList kitFolders;
 
diff --git a/src/plugins/debugger/debuggerrunconfigurationaspect.cpp b/src/plugins/debugger/debuggerrunconfigurationaspect.cpp
index ccc3a9d7bd8..311e268de91 100644
--- a/src/plugins/debugger/debuggerrunconfigurationaspect.cpp
+++ b/src/plugins/debugger/debuggerrunconfigurationaspect.cpp
@@ -20,6 +20,7 @@
 
 #include <qtsupport/qtbuildaspects.h>
 
+#include <utils/environment.h>
 #include <utils/layoutbuilder.h>
 
 #include <QCheckBox>
@@ -156,7 +157,7 @@ DebuggerRunConfigurationAspect::DebuggerRunConfigurationAspect(Target *target)
         builder.addRow(m_qmlAspect);
         builder.addRow(m_overrideStartupAspect);
 
-        static const QByteArray env = qgetenv("QTC_DEBUGGER_MULTIPROCESS");
+        static const QString env = qtcEnvironmentVariable("QTC_DEBUGGER_MULTIPROCESS");
         if (env.toInt())
             builder.addRow(m_multiProcessAspect);
         return builder.emerge(Layouting::WithoutMargins);
diff --git a/src/plugins/debugger/debuggerruncontrol.cpp b/src/plugins/debugger/debuggerruncontrol.cpp
index 86cb83871a9..1bdbdc314ef 100644
--- a/src/plugins/debugger/debuggerruncontrol.cpp
+++ b/src/plugins/debugger/debuggerruncontrol.cpp
@@ -31,6 +31,7 @@
 
 #include <utils/algorithm.h>
 #include <utils/checkablemessagebox.h>
+#include <utils/environment.h>
 #include <utils/fileutils.h>
 #include <utils/portlist.h>
 #include <utils/qtcassert.h>
@@ -891,9 +892,9 @@ DebuggerRunTool::DebuggerRunTool(RunControl *runControl, AllowTerminal allowTerm
 
     setUseTerminal(allowTerminal == DoAllowTerminal && m_runParameters.useTerminal);
 
-    const QByteArray envBinary = qgetenv("QTC_DEBUGGER_PATH");
+    const QString envBinary = qtcEnvironmentVariable("QTC_DEBUGGER_PATH");
     if (!envBinary.isEmpty())
-        m_runParameters.debugger.command.setExecutable(FilePath::fromString(QString::fromLocal8Bit(envBinary)));
+        m_runParameters.debugger.command.setExecutable(FilePath::fromString(envBinary));
 
     if (Project *project = runControl->project()) {
         m_runParameters.projectSourceDirectory = project->projectDirectory();
@@ -903,7 +904,7 @@ DebuggerRunTool::DebuggerRunTool(RunControl *runControl, AllowTerminal allowTerm
     m_runParameters.toolChainAbi = ToolChainKitAspect::targetAbi(kit);
 
     bool ok = false;
-    const int nativeMixedOverride = qEnvironmentVariableIntValue("QTC_DEBUGGER_NATIVE_MIXED", &ok);
+    const int nativeMixedOverride = qtcEnvironmentVariableIntValue("QTC_DEBUGGER_NATIVE_MIXED", &ok);
     if (ok)
         m_runParameters.nativeMixedEnabled = bool(nativeMixedOverride);
 
diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index eb77a9034d7..65f692dfe58 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -37,6 +37,7 @@
 
 #include <app/app_version.h>
 #include <utils/algorithm.h>
+#include <utils/environment.h>
 #include <utils/hostosinfo.h>
 #include <utils/processinterface.h>
 #include <utils/qtcassert.h>
@@ -2599,7 +2600,8 @@ void GdbEngine::insertBreakpoint(const Breakpoint &bp)
                 }
 
                 // for dumping of expressions
-                const static bool alwaysVerbose = qEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
+                const bool alwaysVerbose = qtcEnvironmentVariableIsSet(
+                    "QTC_DEBUGGER_PYTHON_VERBOSE");
                 const DebuggerSettings &s = *debuggerSettings();
                 cmd.arg("passexceptions", alwaysVerbose);
                 cmd.arg("fancy", s.useDebuggingHelpers.value());
@@ -3810,7 +3812,7 @@ void GdbEngine::setupEngine()
         gdbCommand.addArg("--tty=" + m_outputCollector.serverName());
     }
 
-    const QStringList testList = QString::fromLocal8Bit(qgetenv("QTC_DEBUGGER_TESTS")).split(',');
+    const QStringList testList = qtcEnvironmentVariable("QTC_DEBUGGER_TESTS").split(',');
     for (const QString &test : testList)
         m_testCases.insert(test.toInt());
     for (int test : qAsConst(m_testCases))
@@ -5044,7 +5046,7 @@ void GdbEngine::doUpdateLocals(const UpdateParameters &params)
     watchHandler()->appendFormatRequests(&cmd);
     watchHandler()->appendWatchersAndTooltipRequests(&cmd);
 
-    const static bool alwaysVerbose = qEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
+    const bool alwaysVerbose = qtcEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
     const DebuggerSettings &s = *debuggerSettings();
     cmd.arg("passexceptions", alwaysVerbose);
     cmd.arg("fancy", s.useDebuggingHelpers.value());
diff --git a/src/plugins/debugger/lldb/lldbengine.cpp b/src/plugins/debugger/lldb/lldbengine.cpp
index 2d880ed9b4d..20040262391 100644
--- a/src/plugins/debugger/lldb/lldbengine.cpp
+++ b/src/plugins/debugger/lldb/lldbengine.cpp
@@ -28,6 +28,7 @@
 #include <coreplugin/idocument.h>
 #include <coreplugin/icore.h>
 
+#include <utils/environment.h>
 #include <utils/processinterface.h>
 #include <utils/qtcassert.h>
 #include <utils/qtcprocess.h>
@@ -729,7 +730,7 @@ void LldbEngine::doUpdateLocals(const UpdateParameters &params)
     watchHandler()->appendFormatRequests(&cmd);
     watchHandler()->appendWatchersAndTooltipRequests(&cmd);
 
-    const static bool alwaysVerbose = qEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
+    const bool alwaysVerbose = qtcEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
     const DebuggerSettings &s = *debuggerSettings();
     cmd.arg("passexceptions", alwaysVerbose);
     cmd.arg("fancy", s.useDebuggingHelpers.value());
diff --git a/src/plugins/debugger/pdb/pdbengine.cpp b/src/plugins/debugger/pdb/pdbengine.cpp
index bccd7218bce..25ba35fabb4 100644
--- a/src/plugins/debugger/pdb/pdbengine.cpp
+++ b/src/plugins/debugger/pdb/pdbengine.cpp
@@ -21,6 +21,7 @@
 #include <debugger/watchutils.h>
 
 #include <utils/algorithm.h>
+#include <utils/environment.h>
 #include <utils/qtcassert.h>
 #include <utils/qtcprocess.h>
 
@@ -538,7 +539,7 @@ void PdbEngine::updateLocals()
     watchHandler()->appendFormatRequests(&cmd);
     watchHandler()->appendWatchersAndTooltipRequests(&cmd);
 
-    const static bool alwaysVerbose = qEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
+    const bool alwaysVerbose = qtcEnvironmentVariableIsSet("QTC_DEBUGGER_PYTHON_VERBOSE");
     cmd.arg("passexceptions", alwaysVerbose);
     cmd.arg("fancy", debuggerSettings()->useDebuggingHelpers.value());
 
diff --git a/src/plugins/debugger/terminal.cpp b/src/plugins/debugger/terminal.cpp
index 39e0ac84a55..70e8749c635 100644
--- a/src/plugins/debugger/terminal.cpp
+++ b/src/plugins/debugger/terminal.cpp
@@ -9,6 +9,7 @@
 
 #include <projectexplorer/runconfiguration.h>
 
+#include <utils/environment.h>
 #include <utils/hostosinfo.h>
 #include <utils/qtcassert.h>
 #include <utils/qtcprocess.h>
@@ -51,7 +52,7 @@ Terminal::Terminal(QObject *parent)
 void Terminal::setup()
 {
 #ifdef DEBUGGER_USE_TERMINAL
-    if (!qEnvironmentVariableIsSet("QTC_USE_PTY"))
+    if (!qtcEnvironmentVariableIsSet("QTC_USE_PTY"))
         return;
 
     m_masterFd = ::open("/dev/ptmx", O_RDWR);