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https://bugs.gentoo.org/917646
https://github.com/systemd-cron/systemd-cron/issues/141
https://github.com/systemd-cron/systemd-cron/commit/1662b899b206f00face30b9d4671551427262b07
From 1662b899b206f00face30b9d4671551427262b07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=BD=D0=B0=D0=B1?= <nabijaczleweli@nabijaczleweli.xyz>
Date: Tue, 21 Nov 2023 19:40:05 +0100
Subject: [PATCH] Add PCH= for broken compilers like #141
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,6 +1,7 @@
CFLAGS ?= -O2
SHELLCHECK ?= shellcheck
CRONTAB ?= crontab
+PCH ?= y
version := @version@
schedules := @schedules@
@@ -208,12 +209,12 @@ $(builddir)/include/%.hpp: $(srcdir)/include/%.hpp
CXXVER := $(shell $(CXX) --version | { read -r l; echo "$$l"; })
ifneq "$(findstring clang,$(CXXVER))" ""
# clang doesn't use PCHs automatically
- PCH_ARG := -include-pch $(builddir)/include/libvoreutils.hpp.gch -Wno-gcc-compat
+ PCH_ARG := $(if $(PCH),-include-pch $(builddir)/include/libvoreutils.hpp.gch) -Wno-gcc-compat
else
PCH_ARG :=
endif
-common_headers := $(builddir)/include/configuration.hpp $(builddir)/include/libvoreutils.hpp.gch $(builddir)/include/util.hpp
+common_headers := $(builddir)/include/configuration.hpp $(builddir)/include/libvoreutils.hpp$(if $(PCH),.gch) $(builddir)/include/util.hpp
CFLAGS += -Wall -Wextra -fno-exceptions -Wno-psabi
$(builddir)/include/libvoreutils.hpp.gch : $(builddir)/include/libvoreutils.hpp
$(CXX) $(CFLAGS) $(CPPFLAGS) -std=c++20 -I $(builddir)/include $< -o $@
--- a/README.md
+++ b/README.md
@@ -146,6 +146,8 @@ without the override, the jobs would run twice since native-timer detection woul
If there is already a perfect 1:1 mapping between `/etc/cron.<freq>/<job>` and `/usr/lib/systemd/system/<job>.timer`,
then it is not needed to add an entry to these tables.
+If your compiler's [PCH compilation is broken](https://github.com/systemd-cron/systemd-cron/issues/141), build with `make PCH=`.
+
### Caveat
Your package should also run these extra commands before starting cron.target
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