linux-kernel - [PATCH v2] tools lib traceevent: install libtraceevent.a into libdir.

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Date:	Wed, 6 May 2015 10:00:20 +0000
From:	Wang Nan <wangnan0@...wei.com>
To:	<jolsa@...hat.com>
CC:	<acme@...hat.com>, <lizefan@...wei.com>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v2] tools lib traceevent: install libtraceevent.a into libdir.

Before this patch, 'make install' installs libraries into bindir:

  $ make install DESTDIR=./tree
   INSTALL  trace_plugins
   INSTALL  libtraceevent.a
   INSTALL  libtraceevent.so
  $ find ./tree
   ./tree/
   ./tree/usr
   ./tree/usr/local
   ./tree/usr/local/bin
   ./tree/usr/local/bin/libtraceevent.a
   ./tree/usr/local/bin/libtraceevent.so
   ...

/usr/local/lib( or lib64) should be a better place.

This patch replaces 'bin' with libdir. For __LP64__ building, libraries
are installed to /usr/local/lib64. For other building, to
/usr/local/lib instead.

After applying this patch:

  $ make install DESTDIR=./tree
   INSTALL  trace_plugins
   INSTALL  libtraceevent.a
   INSTALL  libtraceevent.so
  $ find ./tree
   ./tree
   ./tree/usr
   ./tree/usr/local
   ./tree/usr/local/lib64
   ./tree/usr/local/lib64/libtraceevent.a
   ./tree/usr/local/lib64/traceevent
   ./tree/usr/local/lib64/traceevent/plugins
   ./tree/usr/local/lib64/traceevent/plugins/plugin_mac80211.so
   ./tree/usr/local/lib64/traceevent/plugins/plugin_hrtimer.so
   ...
   ./tree/usr/local/lib64/libtraceevent.so

Signed-off-by: Wang Nan <wangnan0@...wei.com>
---

v1 -> v2: check __LP64__ and use 'lib64' as libdir for 64 bit building.

---

 tools/lib/traceevent/Makefile | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index d410da3..8464039 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -34,9 +34,15 @@ INSTALL = install
 DESTDIR ?=
 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'

+LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
+ifeq ($(LP64), 1)
+  libdir_relative = lib64
+else
+  libdir_relative = lib
+endif
+
 prefix ?= /usr/local
-bindir_relative = bin
-bindir = $(prefix)/$(bindir_relative)
+libdir = $(prefix)/$(libdir_relative)
 man_dir = $(prefix)/share/man
 man_dir_SQ = '$(subst ','\'',$(man_dir))'

@@ -58,7 +64,7 @@ ifeq ($(prefix),$(HOME))
 override plugin_dir = $(HOME)/.traceevent/plugins
 set_plugin_dir := 0
 else
-override plugin_dir = $(prefix)/lib/traceevent/plugins
+override plugin_dir = $(libdir)/traceevent/plugins
 endif
 endif

@@ -85,11 +91,11 @@ srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
 endif

-export prefix bindir src obj
+export prefix libdir src obj

 # Shell quotes
-bindir_SQ = $(subst ','\'',$(bindir))
-bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
+libdir_SQ = $(subst ','\'',$(libdir))
+libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
 plugin_dir_SQ = $(subst ','\'',$(plugin_dir))

 LIB_FILE = libtraceevent.a libtraceevent.so
@@ -240,7 +246,7 @@ endef

 install_lib: all_cmd install_plugins
 	$(call QUIET_INSTALL, $(LIB_FILE)) \
-		$(call do_install,$(LIB_FILE),$(bindir_SQ))
+		$(call do_install,$(LIB_FILE),$(libdir_SQ))

 install_plugins: $(PLUGINS)
 	$(call QUIET_INSTALL, trace_plugins) \
-- 
1.8.3.4

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