From: Viktor Szakats <commit@vsz.me>
Date: Thu, 14 Aug 2025 21:43:34 +0000 (+0200)
Subject: GHA/linux: build `-O3` job with unity batches to save 10-15s
X-Git-Tag: curl-8_16_0~78
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0a96b878f78cb925afb60f142707eb59b57781f9;p=thirdparty%2Fcurl.git

GHA/linux: build `-O3` job with unity batches to save 10-15s

Before (build, test run):
https://github.com/curl/curl/actions/runs/16974205126/job/48118716664 25s, 12m56
https://github.com/curl/curl/actions/runs/16973102133/job/48114977897 24s, 12m51

After, with batch size 50 (build, test run):
https://github.com/curl/curl/actions/runs/17250901063/job/48952645881?pr=18293 16s, 12m51
https://github.com/curl/curl/actions/runs/17250901063/job/48953665204?pr=18293 17s, 12m42

Closes #18293
---

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 8b1c37ba06..656851030b 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -173,7 +173,7 @@ jobs:
           - name: 'openssl -O3 libssh valgrind'
             install_packages: zlib1g-dev libssh-dev valgrind
             CFLAGS: -O3
-            generate: -DENABLE_DEBUG=ON -DCURL_USE_LIBSSH=ON
+            generate: -DENABLE_DEBUG=ON -DCURL_USE_LIBSSH=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=50
 
           - name: 'openssl clang krb5 openldap static'
             install_steps: openldap-static