package/systemd: better patch to avoid ln --relative
We currently have two patches that address the ln --relative issue differently. The first one changes the behaviour to generate absolute symlinks, which is incorrect; the second provides an ad-hoc solution for a single case. Replace both of them with a single patch that mimics ln --relative when the host ln does not support it. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Yann E. MORIN
Thomas Petazzoni
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96
package/systemd/0002-build-check-for-ln-relative.patch
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96
package/systemd/0002-build-check-for-ln-relative.patch
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From c78fa2b40cb8b810d06ef225e30f12a7ed44ffa2 Mon Sep 17 00:00:00 2001
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From: "Yann E. MORIN" <yann.morin.1998@free.fr>
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Date: Sat, 1 Apr 2017 11:26:29 +0200
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Subject: [PATCH] build: check for ln --relative
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ln --relative is recent enough that not all distributions support it.
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This is especially the case for enterprise-grade distributions than can
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have a life-span of more than a decade.
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Detect if ln supports --relative and use it if so.
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If not supported, use a bit of sed magic to construct the ../ sequence,
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that leads back to / when appended to the destination directory.
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We introduce this as a macro that expands to a single command. To avoid
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complexity in the macro, we expect paths to be passed whitout the
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leading DESTDIR.
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---
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Upstream status: submitted, disputed:
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https://github.com/systemd/systemd/pull/5682
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---
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Makefile.am | 25 ++++++++++++++++++++++---
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configure.ac | 5 ++++-
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2 files changed, 26 insertions(+), 4 deletions(-)
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diff --git a/Makefile.am b/Makefile.am
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index 1cc657a..ec503f2 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -300,6 +300,24 @@ install-busnames-target-wants-hook:
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what="$(BUSNAMES_TARGET_WANTS)" && wants=busnames.target && dir=$(systemunitdir) && $(add-wants)
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what="$(USER_BUSNAMES_TARGET_WANTS)" && wants=busnames.target && dir=$(userunitdir) && $(add-wants)
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+# Macro to emulate ln --relative when needed
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+# $(1): options for ln, except --relative
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+# $(2): source file, absolute path without leading DESTDIR
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+# $(3): destination file, absolute path without leading DESTDIR
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+if HAVE_LN_RELATIVE
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+define ln-s-relative
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+ $(LN_S) --relative $(1) \
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+ $(DESTDIR)$(strip $(2)) \
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+ $(DESTDIR)$(strip $(3))
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+endef
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+else
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+define ln-s-relative
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+ $(LN_S) $(1) \
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+ `dirname $(strip $(3)) |sed -r -e 's:/+[^/]+:../:g; s:/$$::'`$(strip $(2)) \
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+ $(DESTDIR)$(strip $(3))
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+endef
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+endif
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+
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define add-wants
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[ -z "$$what" ] || ( \
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dir=$(DESTDIR)$$dir/$$wants.wants && \
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@@ -313,8 +331,9 @@ install-directories-hook:
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$(MKDIR_P) $(addprefix $(DESTDIR),$(INSTALL_DIRS))
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install-environment-conf-hook: install-directories-hook
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- $(AM_V_LN)$(LN_S) --relative -f $(DESTDIR)$(sysconfdir)/environment \
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- $(DESTDIR)$(environmentdir)/99-environment.conf
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+ $(AM_V_LN)$(call ln-s-relative,-f,\
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+ $(sysconfdir)/environment,\
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+ $(environmentdir)/99-environment.conf)
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install-aliases-hook:
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set -- $(SYSTEM_UNIT_ALIASES) && \
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@@ -337,7 +356,7 @@ define install-relative-aliases
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while [ -n "$$1" ]; do \
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$(MKDIR_P) `dirname $(DESTDIR)$$dir/$$2` && \
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rm -f $(DESTDIR)$$dir/$$2 && \
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- $(LN_S) --relative $(DESTDIR)$$1 $(DESTDIR)$$dir/$$2 && \
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+ $(call ln-s-relative,,$$1,$$dir/$$2) && \
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shift 2 || exit $$?; \
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done
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endef
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diff --git a/configure.ac b/configure.ac
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index cf37ca6..d586fc4 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -108,7 +108,10 @@ AC_PATH_PROG([SULOGIN], [sulogin], [/usr/sbin/sulogin], [$PATH:/usr/sbin:/sbin])
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AC_PATH_PROG([MOUNT_PATH], [mount], [/usr/bin/mount], [$PATH:/usr/sbin:/sbin])
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AC_PATH_PROG([UMOUNT_PATH], [umount], [/usr/bin/umount], [$PATH:/usr/sbin:/sbin])
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-AS_IF([! ln --relative --help > /dev/null 2>&1], [AC_MSG_ERROR([*** ln doesn't support --relative ***])])
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+AC_MSG_CHECKING([if ln supports --relative])
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+AS_IF([! ${LN_S} --relative --help > /dev/null 2>&1], [ln_relative=no], [ln_relative=yes])
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+AC_MSG_RESULT([$ln_relative])
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+AM_CONDITIONAL([HAVE_LN_RELATIVE], [test "x$ln_relative" = "xyes"])
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M4_DEFINES=
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--
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2.9.3
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@ -1,72 +0,0 @@
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From 32b6c22006767f0762edfa116b8b0f7be0c5c121 Mon Sep 17 00:00:00 2001
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From: Eric Le Bihan <eric.le.bihan.dev@free.fr>
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Date: Wed, 27 Jul 2016 15:43:16 +0200
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Subject: [PATCH] build-sys: revert use of ln relative option.
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Systemd build system now uses the `--relative` option from `ln(1)`.
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This option was added to GNU coreutils 8.16, which is not widely
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deployed yet by GNU/Linux distributions (not available in Debian Wheezy
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for example).
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Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
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[Maxime: refresh the patch]
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[Vincent:
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refresh the patch, move-to-rootlibdir removed by:
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https://github.com/systemd/systemd/commit/082210c7a837063fd8b520b18c221b42059d7eff
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]
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Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
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Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
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---
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Makefile.am | 11 ++---------
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configure.ac | 2 --
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2 files changed, 2 insertions(+), 11 deletions(-)
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diff --git a/Makefile.am b/Makefile.am
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index 0c27f81..4de1595 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -312,9 +312,9 @@ install-aliases-hook:
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set -- $(SYSTEM_UNIT_ALIASES) && \
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dir=$(systemunitdir) && $(install-aliases)
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set -- $(USER_UNIT_ALIASES) && \
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- dir=$(userunitdir) && $(install-relative-aliases)
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+ dir=$(userunitdir) && $(install-aliases)
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set -- $(GENERAL_ALIASES) && \
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- dir= && $(install-relative-aliases)
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+ dir= && $(install-aliases)
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define install-aliases
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while [ -n "$$1" ]; do \
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@@ -325,15 +325,6 @@ define install-aliases
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done
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endef
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-define install-relative-aliases
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- while [ -n "$$1" ]; do \
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- $(MKDIR_P) `dirname $(DESTDIR)$$dir/$$2` && \
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- rm -f $(DESTDIR)$$dir/$$2 && \
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- $(LN_S) --relative $(DESTDIR)$$1 $(DESTDIR)$$dir/$$2 && \
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- shift 2 || exit $$?; \
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- done
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-endef
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-
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install-touch-usr-hook:
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touch -c $(DESTDIR)/$(prefix)
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diff --git a/configure.ac b/configure.ac
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index cf595e6..d58f303 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -110,8 +110,6 @@ AC_PATH_PROG([SULOGIN], [sulogin], [/usr/sbin/sulogin], [$PATH:/usr/sbin:/sbin])
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AC_PATH_PROG([MOUNT_PATH], [mount], [/usr/bin/mount], [$PATH:/usr/sbin:/sbin])
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AC_PATH_PROG([UMOUNT_PATH], [umount], [/usr/bin/umount], [$PATH:/usr/sbin:/sbin])
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-AS_IF([! ln --relative --help > /dev/null 2>&1], [AC_MSG_ERROR([*** ln doesn't support --relative ***])])
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-
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M4_DEFINES=
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AC_CHECK_TOOL(OBJCOPY, objcopy)
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--
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2.8.1
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@ -1,40 +0,0 @@
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From cdb52b24436f0926fd6c56e129c843f49f9b1ed0 Mon Sep 17 00:00:00 2001
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From: "Yann E. MORIN" <yann.morin.1998@free.fr>
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Date: Fri, 31 Mar 2017 23:15:09 +0200
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Subject: [PATCH] install: don't use ln --relative
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ln --relative is too recent to be available in most distros, so it
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breaks the build.
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Fix that with a bit of sed magic, that turns constituents of the
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destination directory each into ../ , which when appended to the
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destination directory leads back straight to / .
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Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
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---
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The problem is even more visible when doing cross-compilation in
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professional build farms, which are often stuck to years-to-decade-old
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enterprise-grade distributions (because, IT), even if the target system
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is top-notch up-to-date.
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---
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Makefile.am | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/Makefile.am b/Makefile.am
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index 1cc657a..ef11e93 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -314,7 +314,8 @@ install-directories-hook:
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$(MKDIR_P) $(addprefix $(DESTDIR),$(INSTALL_DIRS))
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install-environment-conf-hook: install-directories-hook
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- $(AM_V_LN)$(LN_S) --relative -f $(DESTDIR)$(sysconfdir)/environment \
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+ dir=$(shell echo $(environmentdir) |sed -r -e 's:/+[^/]+:../:g'); \
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+ $(AM_V_LN)$(LN_S) -f $${dir}$(sysconfdir)/environment \
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$(DESTDIR)$(environmentdir)/99-environment.conf
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install-aliases-hook:
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--
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2.9.3
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