From: Marco Bettini <marco.bettini@open-xchange.com>
Date: Mon, 2 May 2022 11:13:41 +0000 (+0000)
Subject: m4: adding check for clang -Wstrict-bool availability
X-Git-Tag: 2.3.20~63
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2f8682fc0d185c30475cf6618fa264a4d1042e71;p=thirdparty%2Fdovecot%2Fcore.git

m4: adding check for clang -Wstrict-bool availability
---

diff --git a/configure.ac b/configure.ac
index 82f83915c7..f082dcd43b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -316,6 +316,7 @@ AC_CHECK_HEADERS(strings.h stdint.h unistd.h dirent.h malloc.h \
   sys/utsname.h glob.h linux/falloc.h ucred.h sys/ucred.h crypt.h)
 
 CC_CLANG
+CC_STRICT_BOOL
 AC_LD_WHOLE_ARCHIVE
 DC_DOVECOT_HARDENING
 DC_DOVECOT_FUZZER
diff --git a/m4/dovecot.m4 b/m4/dovecot.m4
index 037d5e40e6..8092bf57c2 100644
--- a/m4/dovecot.m4
+++ b/m4/dovecot.m4
@@ -421,6 +421,7 @@ AC_DEFUN([DC_DOVECOT],[
 	])
 
 	CC_CLANG
+	CC_STRICT_BOOL
 	DC_DOVECOT_CFLAGS
 	DC_DOVECOT_HARDENING
 
@@ -566,6 +567,15 @@ AC_DEFUN([CC_CLANG],[
   AC_MSG_RESULT([$have_clang])
 ])
 
+AC_DEFUN([CC_STRICT_BOOL], [
+  AS_IF([test $have_clang = yes], [
+    AC_REQUIRE([gl_UNKNOWN_WARNINGS_ARE_ERRORS])
+    gl_COMPILER_OPTION_IF([-Wstrict-bool], [
+      AC_DEFINE(HAVE_STRICT_BOOL,, [we have strict bool])
+    ])
+  ])
+])
+
 AC_DEFUN([DOVECOT_WANT_UBSAN], [
   AC_ARG_ENABLE(ubsan,
     AS_HELP_STRING([--enable-ubsan], [Enable undefined behaviour sanitizes (default=no)]),