Split the tracer parts off from ext directory

[bwoebi]

Move all the things.
Drop a few obsolete things.
Change nearly no code.

• git data gets collected in ext/, but git object is collected in tracer/
• the sidecar is now always spawned, unconditionally

[datadog-prod-us1-5]

 

✨ Fix all issues with BitsAI

⚠️ Warnings

🚦 242 Pipeline jobs failed

DataDog/apm-reliability/dd-trace-php | Extension Tea Tests: [7.0, debug-zts]     

🔧 Fix in code (Fix with Cursor).

Compilation error: use of undeclared identifier 'zend_ddtrace_globals' in several files during the build process.

DataDog/apm-reliability/dd-trace-php | Extension Tea Tests: [7.0, debug]     

🔧 Fix in code (Fix with Cursor).

Compilation error: undeclared function 'GC_ADDREF' in startup_logging_helpers.h and multiple other errors due to implicit function declarations.

DataDog/apm-reliability/dd-trace-php | Extension Tea Tests: [7.0, nts]     

🔧 Fix in code (Fix with Cursor).

Compilation error: undeclared functions and identifiers in `ext/startup_logging_helpers.h` and `ext/datadog.c`. Multiple missing definitions lead to build failure.

View all 242 failed jobs.

ℹ️ Info

No other issues found (see more)

🧪 All tests passed
❄️ No new flaky tests detected

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[chatgpt-codex-connector]

💡 Codex Review

dd-trace-php/tracer/weakrefs.c

Line 3 in 7f32d1d

#include "compatibility.h"

Fix weakrefs include path after move to tracer/

After moving weakrefs.c to tracer/, it still includes "compatibility.h" as if it were in ext/. In this commit config.m4 also drops PHP_ADD_INCLUDE([$ext_srcdir/ext]), so for PHP 8.0/8.1 builds (where weakrefs.c is compiled) the header is no longer resolvable and the build fails. Use #include <ext/compatibility.h> (or restore/include the ext include path) to keep those builds working.

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[pr-commenter]

Benchmarks [ profiler ]

Benchmark execution time: 2026-05-23 14:25:32

Comparing candidate commit db7b41e in PR branch bob/common-ext with baseline commit 0fb4c56 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 30 metrics, 6 unstable metrics.