From c756e7418e44d5d479a7c06968a5d2f5ece29152 Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf@nereid.pl>
Date: Mon, 31 Aug 2026 02:47:38 +0200
Subject: [PATCH] Fix android build.

---
 public/client/TracyCallstack.cpp | 16 ++++++++--------
 public/client/TracyCallstack.hpp |  9 ++++++++-
 public/client/TracyProfiler.cpp  |  8 ++++----
 public/client/TracySysTrace.cpp  |  6 +++---
 4 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/public/client/TracyCallstack.cpp b/public/client/TracyCallstack.cpp
index 23d5d75d..e33181b2 100644
--- a/public/client/TracyCallstack.cpp
+++ b/public/client/TracyCallstack.cpp
@@ -346,7 +346,7 @@ void DestroyImageCaches()
 }
 
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
 #  include <errno.h>
 #  include <fcntl.h>
 #  include <signal.h>
@@ -771,7 +771,7 @@ size_t ReadExternalTargetMemory( uint64_t addr, uint32_t size, char* buf )
     return 0;
 }
 
-#endif // __linux__
+#endif // TRACY_HAS_EXTERNAL_TARGET
 
 
 // when "TRACY_SYMBOL_OFFLINE_RESOLVE" is set, instead of fully resolving symbols at runtime,
@@ -1638,7 +1638,7 @@ void EndCallstack()
 #endif
 }
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
 static const char* DecodeCallstackPtrFastExternal( uint64_t ptr )
 {
     static char ret[1024];
@@ -1677,7 +1677,7 @@ const char* DecodeCallstackPtrFast( uint64_t ptr )
 {
     static char ret[1024];
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     if( s_externalTargetPid != 0 && s_extImages ) return DecodeCallstackPtrFastExternal( ptr );
 #endif
 
@@ -1728,7 +1728,7 @@ static void SymbolAddressErrorCb( void* data, const char* /*msg*/, int /*errnum*
     sym.needFree = false;
 }
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
 static CallstackSymbolData DecodeSymbolAddressExternal( uint64_t ptr )
 {
     CallstackSymbolData sym;
@@ -1752,7 +1752,7 @@ CallstackSymbolData DecodeSymbolAddress( uint64_t ptr )
 {
     CallstackSymbolData sym;
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     if( s_externalTargetPid != 0 && s_extImages ) return DecodeSymbolAddressExternal( ptr );
 #endif
 
@@ -1878,7 +1878,7 @@ void GetSymbolForOfflineResolve(void* address, uint64_t imageBaseAddress, Callst
     cbEntry.line = 0;
 }
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
 static int ExternalCallstackDataCb( void* data, uintptr_t /*pc*/, uintptr_t lowaddr, const char* fn, int lineno, const char* function )
 {
     auto* img = (const ExternalImageEntry*)data;
@@ -2015,7 +2015,7 @@ CallstackEntryData DecodeCallstackPtr( uint64_t ptr )
     InitAllocator();
     if( !IsKernelAddress( ptr ) )
     {
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
         if( s_externalTargetPid != 0 && s_extImages ) return DecodeCallstackPtrExternal( ptr );
 #endif
 
diff --git a/public/client/TracyCallstack.hpp b/public/client/TracyCallstack.hpp
index c59afaeb..55aa7cc2 100644
--- a/public/client/TracyCallstack.hpp
+++ b/public/client/TracyCallstack.hpp
@@ -7,6 +7,13 @@
 #include "../common/TracyForceInline.hpp"
 #include "TracyCallstack.h"
 
+// External target API: desktop Linux only. The tracy-monitor that drives
+// it builds for Linux x86_64/aarch64 only, and Android, although __linux__,
+// lacks process_vm_readv on 32-bit ABIs.
+#if defined(__linux__) && !defined(__ANDROID__) && defined(TRACY_HAS_CALLSTACK)
+#  define TRACY_HAS_EXTERNAL_TARGET
+#endif
+
 namespace tracy
 {
 
@@ -88,7 +95,7 @@ void InitCallstackCritical();
 void EndCallstack();
 const char* GetKernelModulePath( uint64_t addr );
 
-#ifdef __linux__
+#ifdef TRACY_HAS_EXTERNAL_TARGET
 bool InitExternalTarget( pid_t targetPid );
 uint32_t GetExternalTargetPid();
 const char* GetExternalTargetName();
diff --git a/public/client/TracyProfiler.cpp b/public/client/TracyProfiler.cpp
index 7ed1e174..58b6b4e4 100644
--- a/public/client/TracyProfiler.cpp
+++ b/public/client/TracyProfiler.cpp
@@ -418,7 +418,7 @@ static int64_t SetupHwTimer()
 
 static const char* GetProcessName()
 {
-#if defined __linux__ && defined TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     if( GetExternalTargetPid() != 0 ) return GetExternalTargetName();
 #endif
 
@@ -749,7 +749,7 @@ static const char* GetHostInfo()
 
 static uint64_t GetPid()
 {
-#if defined __linux__ && defined TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     const auto externalPid = GetExternalTargetPid();
     if( externalPid != 0 ) return uint64_t( externalPid );
 #endif
@@ -1823,7 +1823,7 @@ void Profiler::Worker()
 #endif
 
     m_exectime = 0;
-#if defined __linux__ && defined TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     if( GetExternalTargetPid() != 0 )
     {
         m_exectime = GetExternalTargetExeTime();
@@ -4484,7 +4484,7 @@ void Profiler::HandleSymbolCodeQuery( uint64_t symbol, uint32_t size )
         SendLongString( symbol, buf, size, QueueType::SymbolCode );
     };
 
-#if defined __linux__ && defined TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     if( GetExternalTargetPid() != 0 )
     {
         auto buf = (char*)tracy_malloc_fast( size );
diff --git a/public/client/TracySysTrace.cpp b/public/client/TracySysTrace.cpp
index a5db45b4..0788dc0d 100644
--- a/public/client/TracySysTrace.cpp
+++ b/public/client/TracySysTrace.cpp
@@ -478,7 +478,7 @@ static bool CurrentProcOwnsThread( uint32_t tid )
     if( hv == -tid ) return false;
 
     char path[256];
-#ifdef TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     const auto externalPid = GetExternalTargetPid();
     if( externalPid != 0 )
     {
@@ -815,7 +815,7 @@ bool SysTraceStart( int64_t& samplingPeriod )
         }
     }
     samplingPeriod = SamplingFrequencyToPeriodNs( samplingFrequency );
-#ifdef TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     const auto externalPid = GetExternalTargetPid();
 #else
     const uint32_t externalPid = 0;
@@ -826,7 +826,7 @@ bool SysTraceStart( int64_t& samplingPeriod )
 
     PerfIterTarget* iter;
     int numIter;
-#ifdef TRACY_HAS_CALLSTACK
+#ifdef TRACY_HAS_EXTERNAL_TARGET
     if( externalPid != 0 )
     {
         uint32_t* tids = nullptr;