git: b56d0bc41af7 - main - devel/libcutl: Explain why USE_CXXSTD=c++11 is used

The branch main has been updated by rakuco:

URL: https://cgit.FreeBSD.org/ports/commit/?id=b56d0bc41af79bf3a51f89249e96ec02b7fc464e

commit b56d0bc41af79bf3a51f89249e96ec02b7fc464e
Author:     Raphael Kubo da Costa <rakuco@FreeBSD.org>
AuthorDate: 2023-07-05 08:49:09 +0000
Commit:     Raphael Kubo da Costa <rakuco@FreeBSD.org>
CommitDate: 2023-07-05 08:49:09 +0000

    devel/libcutl: Explain why USE_CXXSTD=c++11 is used
    
    While here, also add a note to its only consumer, devel/xsd, to mention
    why it also needs USE_CXXSTD and when it can be removed.
---
 devel/libcutl/Makefile | 2 ++
 devel/xsd/Makefile     | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/devel/libcutl/Makefile b/devel/libcutl/Makefile
index 323b2b44feee..bbaad70028c2 100644
--- a/devel/libcutl/Makefile
+++ b/devel/libcutl/Makefile
@@ -17,6 +17,8 @@ LIB_DEPENDS=	libboost_system.so:devel/boost-libs \
 		libexpat.so:textproc/expat2
 
 USES=		compiler:c++11-lib libtool
+# libcutl 1.10.0 is not compatible with C++17, which is the default since clang
+# 16. This means ports depending on it also need to use at most C++14.
 USE_CXXSTD=	c++11
 GNU_CONFIGURE=	yes
 INSTALL_TARGET=	install-strip
diff --git a/devel/xsd/Makefile b/devel/xsd/Makefile
index 06e02ce6f72c..010b73e6e9e4 100644
--- a/devel/xsd/Makefile
+++ b/devel/xsd/Makefile
@@ -23,6 +23,9 @@ LIB_DEPENDS=	libcutl.so:devel/libcutl \
 		libxerces-c.so:textproc/xerces-c3
 
 USES=		compiler:c++11-lang ghostscript:build gmake localbase:ldflags tar:bzip2
+# devel/libcutl 1.10.0 does not work with C++17 which is the default since
+# clang 16. This can be removed once that port starts working with C++17 and
+# has its own USE_CXXSTD removed.
 USE_CXXSTD=	c++11
 
 MAKEFILE=	makefile