From 7b0b03c057ed764f918fdda6012978a5518ba5df Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Thu, 26 Jun 2025 23:13:43 +0200
Subject: [PATCH] runtests: fix `LD_PRELOAD` detection for cmake-built curl
 binaries

CMake builds by default don't include a triplet in the `curl -V` output,
but a CMake-specific OS string, which is usually capitalized or stylized,
e.g. "Linux", or "FreeBSD". Make the regexp expression case-insensitive
to handle this.

Follow-up to 171b62375965fbf5f02e66f587a83043059ae41a #17653

Closes #17756
---
 tests/runtests.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/runtests.pl b/tests/runtests.pl
index 2708800318..8e3b58bd68 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -545,7 +545,7 @@ sub checksystemfeatures {
             $curl =~ s/^(.*)(libcurl.*)/$1/g || die "Failure determining curl binary version";
 
             $libcurl = $2;
-            if($curl =~ /linux|bsd|solaris/) {
+            if($curl =~ /linux|bsd|solaris/i) {
                 # system supports LD_PRELOAD/LD_LIBRARY_PATH; may be disabled later
                 $feature{"ld_preload"} = 1;
             }