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From 3c857b315f2aca678d33741b885f1e5778d017cd Mon Sep 17 00:00:00 2001
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From: Zygmunt Krynicki <me@zygoon.pl>
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Date: Mon, 6 Mar 2017 20:26:26 +0100
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Subject: [PATCH] cmd: use libtool for the internal library
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This just cuts some hassle integration with how the helper library is
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built. I could never get to pass the right -fPIC/-fpie combination
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otherwise.
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Signed-off-by: Zygmunt Krynicki <me@zygoon.pl>
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---
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 cmd/Makefile.am  | 32 ++++++++++++++++----------------
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 cmd/configure.ac |  3 ++-
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 2 files changed, 18 insertions(+), 17 deletions(-)
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diff --git a/cmd/Makefile.am b/cmd/Makefile.am
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index af9f14e6c..ae7058a36 100644
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--- a/cmd/Makefile.am
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+++ b/cmd/Makefile.am
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@@ -76,12 +76,12 @@ snap-seccomp/snap-seccomp: snap-seccomp/*.go
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 	cd snap-seccomp && GOPATH=$(or $(GOPATH),$(realpath $(srcdir)/../../../../..)) go build -i -v
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 ##
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-## libsnap-confine-private.a
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+## libsnap-confine-private.la
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 ##
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-noinst_LIBRARIES += libsnap-confine-private.a
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+noinst_LTLIBRARIES = libsnap-confine-private.la
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-libsnap_confine_private_a_SOURCES = \
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+libsnap_confine_private_la_SOURCES = \
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 	libsnap-confine-private/cgroup-freezer-support.c \
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 	libsnap-confine-private/cgroup-freezer-support.h \
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 	libsnap-confine-private/classic.c \
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@@ -108,11 +108,11 @@ libsnap_confine_private_a_SOURCES = \
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 	libsnap-confine-private/string-utils.h \
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 	libsnap-confine-private/utils.c \
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 	libsnap-confine-private/utils.h
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-libsnap_confine_private_a_CFLAGS = $(CHECK_CFLAGS)
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+libsnap_confine_private_la_CFLAGS = $(CHECK_CFLAGS)
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-noinst_LIBRARIES += libsnap-confine-private-debug.a
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-libsnap_confine_private_debug_a_SOURCES = $(libsnap_confine_private_a_SOURCES)
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-libsnap_confine_private_debug_a_CFLAGS = $(CHECK_CFLAGS) -DSNAP_CONFINE_DEBUG_BUILD=1
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+noinst_LTLIBRARIES += libsnap-confine-private-debug.la
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+libsnap_confine_private_debug_la_SOURCES = $(libsnap_confine_private_la_SOURCES)
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+libsnap_confine_private_debug_la_CFLAGS = $(CHECK_CFLAGS) -DSNAP_CONFINE_DEBUG_BUILD=1
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 if WITH_UNIT_TESTS
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 noinst_PROGRAMS += libsnap-confine-private/unit-tests
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@@ -161,7 +161,7 @@ noinst_PROGRAMS += decode-mount-opts/decode-mount-opts
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 decode_mount_opts_decode_mount_opts_SOURCES = \
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 	decode-mount-opts/decode-mount-opts.c
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-decode_mount_opts_decode_mount_opts_LDADD = libsnap-confine-private.a
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+decode_mount_opts_decode_mount_opts_LDADD = libsnap-confine-private.la
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 decode_mount_opts_decode_mount_opts_STATIC =
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 if STATIC_LIBCAP
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@@ -215,7 +215,7 @@ snap_confine_snap_confine_SOURCES = \
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 snap_confine_snap_confine_CFLAGS = $(CHECK_CFLAGS) $(AM_CFLAGS) -DLIBEXECDIR=\"$(libexecdir)\" -DNATIVE_LIBDIR=\"$(libdir)\"
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 snap_confine_snap_confine_LDFLAGS = $(AM_LDFLAGS)
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-snap_confine_snap_confine_LDADD = libsnap-confine-private.a
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+snap_confine_snap_confine_LDADD = libsnap-confine-private.la
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 snap_confine_snap_confine_CFLAGS += $(LIBUDEV_CFLAGS)
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 snap_confine_snap_confine_LDADD += $(snap_confine_snap_confine_extra_libs)
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 # _STATIC is where we collect statically linked in libraries
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@@ -271,7 +271,7 @@ noinst_PROGRAMS += snap-confine/snap-confine-debug
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 snap_confine_snap_confine_debug_SOURCES = $(snap_confine_snap_confine_SOURCES)
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 snap_confine_snap_confine_debug_CFLAGS = $(snap_confine_snap_confine_CFLAGS)
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 snap_confine_snap_confine_debug_LDFLAGS = $(snap_confine_snap_confine_LDFLAGS)
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-snap_confine_snap_confine_debug_LDADD = libsnap-confine-private-debug.a $(snap_confine_snap_confine_extra_libs)
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+snap_confine_snap_confine_debug_LDADD = libsnap-confine-private-debug.la $(snap_confine_snap_confine_extra_libs)
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 snap_confine_snap_confine_debug_CFLAGS += -DSNAP_CONFINE_DEBUG_BUILD=1
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 snap_confine_snap_confine_debug_STATIC = $(snap_confine_snap_confine_STATIC)
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@@ -401,7 +401,7 @@ snap_discard_ns_snap_discard_ns_SOURCES = \
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 	snap-discard-ns/snap-discard-ns.c
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 snap_discard_ns_snap_discard_ns_CFLAGS = $(CHECK_CFLAGS) $(AM_CFLAGS)
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 snap_discard_ns_snap_discard_ns_LDFLAGS = $(AM_LDFLAGS)
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-snap_discard_ns_snap_discard_ns_LDADD = libsnap-confine-private.a
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+snap_discard_ns_snap_discard_ns_LDADD = libsnap-confine-private.la
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 snap_discard_ns_snap_discard_ns_STATIC =
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 if APPARMOR
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@@ -436,7 +436,7 @@ system_shutdown_system_shutdown_SOURCES = \
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 	system-shutdown/system-shutdown-utils.c \
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 	system-shutdown/system-shutdown-utils.h \
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 	system-shutdown/system-shutdown.c
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-system_shutdown_system_shutdown_LDADD = libsnap-confine-private.a
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+system_shutdown_system_shutdown_LDADD = libsnap-confine-private.la
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 system_shutdown_system_shutdown_CFLAGS = $(CHECK_CFLAGS) $(filter-out -fPIE -pie,$(CFLAGS)) -static
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 system_shutdown_system_shutdown_LDFLAGS = $(filter-out -fPIE -pie,$(LDFLAGS)) -static
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@@ -446,7 +446,7 @@ system_shutdown_unit_tests_SOURCES = \
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 	libsnap-confine-private/unit-tests-main.c \
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 	libsnap-confine-private/unit-tests.c \
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 	system-shutdown/system-shutdown-utils-test.c
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-system_shutdown_unit_tests_LDADD = libsnap-confine-private.a
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+system_shutdown_unit_tests_LDADD = libsnap-confine-private.la
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 system_shutdown_unit_tests_CFLAGS = $(GLIB_CFLAGS)
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 system_shutdown_unit_tests_LDADD +=  $(GLIB_LIBS)
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 endif
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@@ -460,7 +460,7 @@ libexec_PROGRAMS += snap-gdb-shim/snap-gdb-shim
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 snap_gdb_shim_snap_gdb_shim_SOURCES = \
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 	snap-gdb-shim/snap-gdb-shim.c
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-snap_gdb_shim_snap_gdb_shim_LDADD = libsnap-confine-private.a
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+snap_gdb_shim_snap_gdb_shim_LDADD = libsnap-confine-private.la
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 ##
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 ## snapd-generator
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@@ -470,7 +470,7 @@ systemdsystemgeneratordir = $(SYSTEMD_SYSTEM_GENERATOR_DIR)
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 systemdsystemgenerator_PROGRAMS = snapd-generator/snapd-generator
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 snapd_generator_snapd_generator_SOURCES = snapd-generator/main.c
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-snapd_generator_snapd_generator_LDADD = libsnap-confine-private.a
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+snapd_generator_snapd_generator_LDADD = libsnap-confine-private.la
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 ##
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 ## snapd-env-generator
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@@ -480,7 +480,7 @@ systemdsystemenvgeneratordir=$(SYSTEMD_SYSTEM_ENV_GENERATOR_DIR)
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 systemdsystemenvgenerator_PROGRAMS = snapd-env-generator/snapd-env-generator
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 snapd_env_generator_snapd_env_generator_SOURCES = snapd-env-generator/main.c
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-snapd_env_generator_snapd_env_generator_LDADD = libsnap-confine-private.a
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+snapd_env_generator_snapd_env_generator_LDADD = libsnap-confine-private.la
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 EXTRA_DIST += snapd-env-generator/snapd-env-generator.rst
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 if HAVE_RST2MAN
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diff --git a/cmd/configure.ac b/cmd/configure.ac
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index e3aa02655..8531b4233 100644
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--- a/cmd/configure.ac
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+++ b/cmd/configure.ac
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@@ -11,7 +11,8 @@ AC_PROG_CC_C99
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 AC_PROG_CPP
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 AC_PROG_INSTALL
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 AC_PROG_MAKE_SET
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-AC_PROG_RANLIB
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+AC_PROG_LIBTOOL
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+AC_CONFIG_MACRO_DIR([m4])
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 AC_LANG([C])
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 # Checks for libraries.
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-- 
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2.17.2
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