From c3cef948b7f029d639cdf068e2db23beae22c83c Mon Sep 17 00:00:00 2001
From: Peng Yi <141570-nerditation@users.noreply.gitlab.gnome.org>
Date: Sat, 20 Apr 2024 07:49:01 +0000
Subject: [PATCH 1/3] meson.build replace `cc.compiles()` to
 `cc.has_function()` to check functions

---
 meson.build | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/meson.build b/meson.build
index c18c7ae..61559ae 100644
--- a/meson.build
+++ b/meson.build
@@ -29,7 +29,9 @@ check_functions = [
 ]
 conf = configuration_data()
 foreach check_function : check_functions
-  have_it = cc.compiles('''
+  have_it = cc.has_function(
+    check_function,
+    prefix: '''
     #include <sys/types.h>
     #include <unistd.h>
     #include <stdio.h>
@@ -39,13 +41,8 @@ foreach check_function : check_functions
     #include <linux/loop.h>
     #include <linux/random.h>
     #include <sys/mman.h>
-
-    int func (void) {
-      (void) ''' + check_function + ''';
-    }
     ''',
     args : '-D_GNU_SOURCE',
-    name : check_function + '() is declared',
   )
   conf.set10('HAVE_DECL_' + check_function.underscorify().to_upper(), have_it)
 endforeach
-- 
GitLab


From 67e5e5bc721892092a79e81b2baee0663d658c44 Mon Sep 17 00:00:00 2001
From: Peng Yi <141570-nerditation@users.noreply.gitlab.gnome.org>
Date: Sat, 20 Apr 2024 17:17:18 +0800
Subject: [PATCH 2/3] separate header files for individual functions according
 to man pages

---
 meson.build | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/meson.build b/meson.build
index 61559ae..500b09e 100644
--- a/meson.build
+++ b/meson.build
@@ -23,25 +23,17 @@ cc = meson.get_compiler('c')
 
 
 check_functions = [
-  'renameat2',
-  'memfd_create',
-  'copy_file_range',
+  ['renameat2', 'stdio.h'],
+  ['memfd_create', 'sys/mman.h'],
+  ['copy_file_range', 'unistd.h'],
 ]
 conf = configuration_data()
 foreach check_function : check_functions
+  header_file = check_function[1]
+  check_function = check_function[0]
   have_it = cc.has_function(
     check_function,
-    prefix: '''
-    #include <sys/types.h>
-    #include <unistd.h>
-    #include <stdio.h>
-    #include <sys/mount.h>
-    #include <fcntl.h>
-    #include <sched.h>
-    #include <linux/loop.h>
-    #include <linux/random.h>
-    #include <sys/mman.h>
-    ''',
+    prefix: '#include <' + header_file + '>',
     args : '-D_GNU_SOURCE',
   )
   conf.set10('HAVE_DECL_' + check_function.underscorify().to_upper(), have_it)
-- 
GitLab


From 507edf552bc0f61bc293f5b2dddf4048bb8106df Mon Sep 17 00:00:00 2001
From: Peng Yi <141570-nerditation@users.noreply.gitlab.gnome.org>
Date: Sat, 20 Apr 2024 19:24:09 +0800
Subject: [PATCH 3/3] bare `cc.has_function()` can produces the correct result

---
 meson.build | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/meson.build b/meson.build
index 500b09e..5caef90 100644
--- a/meson.build
+++ b/meson.build
@@ -23,19 +23,13 @@ cc = meson.get_compiler('c')
 
 
 check_functions = [
-  ['renameat2', 'stdio.h'],
-  ['memfd_create', 'sys/mman.h'],
-  ['copy_file_range', 'unistd.h'],
+  'renameat2',
+  'memfd_create',
+  'copy_file_range',
 ]
 conf = configuration_data()
 foreach check_function : check_functions
-  header_file = check_function[1]
-  check_function = check_function[0]
-  have_it = cc.has_function(
-    check_function,
-    prefix: '#include <' + header_file + '>',
-    args : '-D_GNU_SOURCE',
-  )
+  have_it = cc.has_function(check_function)
   conf.set10('HAVE_DECL_' + check_function.underscorify().to_upper(), have_it)
 endforeach
 
-- 
GitLab