[libsoup] build: Add http2_tests build option to explicitly enable them

[Patrick Griffis <pgriffis src gnome org>]

commit 2dae529ab45b8693b1771ccca89b055eda76561b
Author: Patrick Griffis <pgriffis igalia com>
Date:   Fri Jun 4 10:12:23 2021 -0500

    build: Add http2_tests build option to explicitly enable them

 meson.build       | 19 ++++++++++++-------
 meson_options.txt |  8 +++++++-
 2 files changed, 19 insertions(+), 8 deletions(-)
---
diff --git a/meson.build b/meson.build
index 97704170..4952d513 100644
--- a/meson.build
+++ b/meson.build
@@ -292,17 +292,22 @@ else
 endif
 
 # Quart server used for HTTP/2 tests
-pymod = import('python')
 quart_found = false
 
-python = pymod.find_installation('python3')
-if python.found()
-  ret = run_command(python, '-c', 'import importlib\nassert(importlib.find_loader("quart"))')
-  if ret.returncode() == 0
-    quart_found = true
+if not get_option('http2_tests').disabled()
+  pymod = import('python')
+  python = pymod.find_installation('python3')
+  if python.found()
+    ret = run_command(python, '-c', 'import importlib\nassert(importlib.find_loader("quart"))')
+    if ret.returncode() == 0
+      quart_found = true
+    endif
+  endif
+  message('Python module quart found: @0@'.format(quart_found.to_string('YES', 'NO')))
+  if get_option('http2_tests').enabled() and not quart_found
+    error('quart is required for http2 tests')
   endif
 endif
-message('Python module quart found: @0@'.format(quart_found.to_string('YES', 'NO')))
 
 gnutls_dep = dependency('gnutls', required : get_option('tests'))
 
diff --git a/meson_options.txt b/meson_options.txt
index 778e5d34..50d6a41f 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -81,4 +81,10 @@ option('fuzzing',
   type: 'feature',
   value: 'disabled',
   description: 'enable fuzzing support'
-)
\ No newline at end of file
+)
+
+option('http2_tests',
+  type: 'feature',
+  value: 'auto',
+  description: 'enable HTTP/2 tests depending on quart'
+)