From 7cad0bee80a536c7e47f54cf43174175834f30a0 Mon Sep 17 00:00:00 2001
From: Pablo Galindo Salgado <Pablogsal@gmail.com>
Date: Fri, 30 Jul 2021 15:21:09 +0100
Subject: [PATCH] Fail the CI if an optional module fails to compile (GH-27466)

---
 .github/workflows/build.yml | 4 ++++
 .travis.yml                 | 1 +
 setup.py                    | 3 +++
 3 files changed, 8 insertions(+)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3d79999b229..4081b36f926 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -119,6 +119,8 @@ jobs:
     runs-on: macos-latest
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
+    env:
+      PYTHONSTRICTEXTENSIONBUILD: 1
     steps:
     - uses: actions/checkout@v2
     - name: Configure CPython
@@ -137,6 +139,7 @@ jobs:
     if: needs.check_source.outputs.run_tests == 'true'
     env:
       OPENSSL_VER: 1.1.1k
+      PYTHONSTRICTEXTENSIONBUILD: 1
     steps:
     - uses: actions/checkout@v2
     - name: Register gcc problem matcher
@@ -227,6 +230,7 @@ jobs:
     if: needs.check_source.outputs.run_tests == 'true'
     env:
       OPENSSL_VER: 1.1.1k
+      PYTHONSTRICTEXTENSIONBUILD: 1
       ASAN_OPTIONS: detect_leaks=0:allocator_may_return_null=1:handle_segv=0
     steps:
     - uses: actions/checkout@v2
diff --git a/.travis.yml b/.travis.yml
index 4b85da1a44c..b2f7e274587 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,7 @@ env:
     # Set rpath with env var instead of -Wl,-rpath linker flag
     # OpenSSL ignores LDFLAGS when linking bin/openssl
     - LD_RUN_PATH="${OPENSSL_DIR}/lib"
+    - PYTHONSTRICTEXTENSIONBUILD=1
 
 branches:
   only:
diff --git a/setup.py b/setup.py
index 78eb68b8492..59b2548810c 100644
--- a/setup.py
+++ b/setup.py
@@ -571,6 +571,9 @@ class PyBuildExt(build_ext):
                 print("Custom linker flags may require --with-openssl-rpath=auto")
             print()
 
+        if os.environ.get("PYTHONSTRICTEXTENSIONBUILD") and (self.failed or self.failed_on_import):
+            raise RuntimeError("Failed to build some stdlib modules")
+
     def build_extension(self, ext):
 
         if ext.name == '_ctypes':