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Message #10647
[Bug 2070284] Re: FTBFS: ‘starts_with’ has not been declared in ‘std::string’
The error is in an include file shipped with poppler, but poppler itself
doesn't FTBFS...
Looking more closely, I see poppler is built with -std=c++20, and
according to [1] the ends_with/starts_with are defined in c++20. But dia
is built with -std=gnu17 (defined in [2]).
That change in [2] was done via commit [3]:
>From 7093a1ad332c8efd91c81d6030ced5a86ab69309 Mon Sep 17 00:00:00 2001
From: Zander Brown <zbrown@xxxxxxxxx>
Date: Tue, 8 Aug 2023 05:29:53 +0100
Subject: [PATCH] build: set c++ standard
Close: https://gitlab.gnome.org/GNOME/dia/-/merge_requests/96
---
meson.build | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/meson.build b/meson.build
index cd988500c..0d3e4d282 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,12 @@ project('dia',
['c', 'cpp'],
version: '0.97.3', # This is the base version, git suffix gets added using vcs_tag().
meson_version: '>= 0.58',
- default_options: ['warning_level=1']
+ default_options: [
+ 'warning_level=1',
+ 'buildtype=debugoptimized',
+ 'c_std=gnu17',
+ 'cpp_std=gnu++17',
+ ],
)
cc = meson.get_compiler('c')
--
GitLab
The last successful build of dia was at [4], on 2024-04-08, and it was
already using -std=gnu17[5], and I don't even see warnings in the logs.
In fact, the c++ invocation is identical.
1. https://en.cppreference.com/w/cpp/string/basic_string/starts_with
2. https://gitlab.gnome.org/GNOME/dia/-/blob/master/meson.build#L8
3. https://gitlab.gnome.org/GNOME/dia/-/commit/7093a1ad332c8efd91c81d6030ced5a86ab69309
4. https://launchpad.net/ubuntu/+source/dia/0.98+git20240130-1build4
5. https://launchpadlibrarian.net/723728520/buildlog_ubuntu-noble-amd64.dia_0.98+git20240130-1build4_BUILDING.txt.gz
--
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https://bugs.launchpad.net/bugs/2070284
Title:
FTBFS: ‘starts_with’ has not been declared in ‘std::string’
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References