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From: Sergei Trofimovich <slyich@gmail.com>
To: dm-devel@redhat.com
Cc: Sergei Trofimovich <slyich@gmail.com>, Martin Wilck <mwilck@suse.com>
Subject: [dm-devel] [PATCH 3/4] multipath-tools: autodiscover libudev.h headers
Date: Sun,  9 Jan 2022 10:29:07 +0000	[thread overview]
Message-ID: <20220109102908.4102332-3-slyich@gmail.com> (raw)
In-Reply-To: <20220109102908.4102332-1-slyich@gmail.com>

On NixOS nothing is installed in /usr/include and instead lives
in it's own prefix. pkg-config variables are expected to be used
for installation discovery:

    $ pkg-config --variable=includedir libudev
    /nix/store/27mwkz5zhzw0gip8y7pvjyma5r0hzzaw-systemd-249.7-dev/include

The change switches libudev.h discovery to pkg-config provided path.

CC: Martin Wilck <mwilck@suse.com>
CC: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Sergei Trofimovich <slyich@gmail.com>
---
 Makefile.inc          | 8 ++++++++
 libmultipath/Makefile | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Makefile.inc b/Makefile.inc
index 3b50395f..f5509db4 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -60,6 +60,14 @@ ifndef DEVMAPPER_INCDIR
 	endif
 endif
 
+ifndef LIBUDEV_INCDIR
+	ifeq ($(shell $(PKGCONFIG) --modversion libudev >/dev/null 2>&1 && echo 1), 1)
+		LIBUDEV_INCDIR = $(shell $(PKGCONFIG) --variable=includedir libudev)
+	else
+		LIBUDEV_INCDIR = /usr/include
+	endif
+endif
+
 prefix		=
 exec_prefix	= $(prefix)
 usr_prefix	= $(prefix)
diff --git a/libmultipath/Makefile b/libmultipath/Makefile
index be48775d..46972faf 100644
--- a/libmultipath/Makefile
+++ b/libmultipath/Makefile
@@ -33,7 +33,7 @@ ifneq ($(call check_func,dm_task_set_cookie,$(DEVMAPPER_INCDIR)/libdevmapper.h),
 	CFLAGS += -DLIBDM_API_COOKIE
 endif
 
-ifneq ($(call check_func,udev_monitor_set_receive_buffer_size,/usr/include/libudev.h),0)
+ifneq ($(call check_func,udev_monitor_set_receive_buffer_size,$(LIBUDEV_INCDIR)/libudev.h),0)
 	CFLAGS += -DLIBUDEV_API_RECVBUF
 endif
 
-- 
2.34.1

--
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  parent reply	other threads:[~2022-01-09 10:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-09 10:29 [dm-devel] [PATCH 1/4] multipath-tools: avoid using GZIP Makefile variable Sergei Trofimovich
2022-01-09 10:29 ` [dm-devel] [PATCH 2/4] multipath-tools: autodiscover libdevmapper.h headers Sergei Trofimovich
2022-01-09 10:29 ` Sergei Trofimovich [this message]
2022-01-09 10:29 ` [dm-devel] [PATCH 4/4] multipath-tools: allow passing non-standard linux-headers location Sergei Trofimovich
2022-01-10 18:29 ` [dm-devel] [PATCH 1/4] multipath-tools: avoid using GZIP Makefile variable Martin Wilck

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