libatomic/Makefile.am

   1 ##  Copyright (C) 2012 Free Software Foundation, Inc.
   2 ##  Contributed by Richard Henderson <rth@redhat.com>.
   3 ##
   4 ##  This file is part of the GNU Atomic Library (libatomic).
   5 ##
   6 ##  Libatomic is free software; you can redistribute it and/or modify it
   7 ##  under the terms of the GNU General Public License as published by
   8 ##  the Free Software Foundation; either version 3 of the License, or
   9 ##  (at your option) any later version.
  10 ##
  11 ##  Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
  12 ##  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13 ##  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14 ##  more details.
  15 ##
  16 ##  Under Section 7 of GPL version 3, you are granted additional
  17 ##  permissions described in the GCC Runtime Library Exception, version
  18 ##  3.1, as published by the Free Software Foundation.
  19 ##
  20 ##  You should have received a copy of the GNU General Public License and
  21 ##  a copy of the GCC Runtime Library Exception along with this program;
  22 ##  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 ##  <http://www.gnu.org/licenses/>.
  24
  25 ACLOCAL_AMFLAGS = -I .. -I ../config
  26 SUBDIRS = testsuite
  27
  28 ## May be used by toolexeclibdir.
  29 gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER)
  30
  31 config_path= @config_path@
  32 search_path = $(addprefix $(top_srcdir)/config/, $(config_path)) \
  33         $(top_srcdir) $(top_builddir)
  34
  35 vpath % $(strip $(search_path))
  36
  37 DEFAULT_INCLUDES = $(addprefix -I, $(search_path))
  38 AM_CFLAGS = $(XCFLAGS)
  39 AM_CCASFLAGS = $(XCFLAGS)
  40 AM_LDFLAGS = $(XLDFLAGS) $(SECTION_LDFLAGS) $(OPT_LDFLAGS)
  41
  42 toolexeclib_LTLIBRARIES = libatomic.la
  43
  44 if LIBAT_BUILD_VERSIONED_SHLIB
  45 if LIBAT_BUILD_VERSIONED_SHLIB_GNU
  46 libatomic_version_script = -Wl,--version-script,$(top_srcdir)/libatomic.map
  47 libatomic_version_dep = $(top_srcdir)/libatomic.map
  48 endif
  49 if LIBAT_BUILD_VERSIONED_SHLIB_SUN
  50 libatomic_version_script = -Wl,-M,libatomic.map-sun
  51 libatomic_version_dep = libatomic.map-sun
  52 libatomic.map-sun : $(top_srcdir)/libatomic.map \
  53                 $(top_srcdir)/../contrib/make_sunver.pl \
  54                 $(libatomic_la_OBJECTS) $(libatomic_la_LIBADD)
  55         perl $(top_srcdir)/../contrib/make_sunver.pl \
  56           $(top_srcdir)/libatomic.map \
  57           $(libatomic_la_OBJECTS:%.lo=.libs/%.o) \
  58          `echo $(libatomic_la_LIBADD) | \
  59             sed 's,\([^/        ]*\)\.l\([ao]\),.libs/\1.\2,g'` \
  60          > $@ || (rm -f $@ ; exit 1)
  61 endif
  62 else
  63 libatomic_version_script =
  64 libatomic_version_dep =
  65 endif
  66 libatomic_version_info = -version-info $(libtool_VERSION)
  67
  68 libatomic_la_LDFLAGS = $(libatomic_version_info) $(libatomic_version_script)
  69 libatomic_la_SOURCES = gload.c gstore.c gcas.c gexch.c glfree.c lock.c init.c
  70
  71 SIZEOBJS = load store cas exch fadd fsub fand fior fxor fnand tas
  72 SIZES = @SIZES@
  73
  74 EXTRA_libatomic_la_SOURCES = $(addsuffix _n.c,$(SIZEOBJS))
  75 libatomic_la_DEPENDENCIES = $(libatomic_la_LIBADD) $(libatomic_version_dep)
  76
  77 ## And now our custom target patterns that allow us not to have tons of
  78 ## extra source files hanging about.  Unfortunately, the complex relation
  79 ## between source and object filenames doesn't allow us to add an explicit
  80 ## dependency here.  Fortunately that doesn't matter since auto-generated
  81 ## dependencies do the job just as well:
  82 -include $(wildcard $(DEPDIR)/*.Ppo)
  83
  84 ## Naming pattern: base_n_i_.lo
  85 ##
  86 ##      N       size of data
  87 ##      I       IFUNC alternative, index beginning at 1.
  88 ##
  89 ## The trailing _ in the output object file name is required to differentiate
  90 ## these objects from those which should be compiled normally.  We can only
  91 ## have one stem in the implicit rule.
  92
  93 empty           =
  94 space           = $(empty) $(empty)
  95 PAT_SPLIT       = $(subst _,$(space),$(*F))
  96 PAT_BASE        = $(word 1,$(PAT_SPLIT))
  97 PAT_N           = $(word 2,$(PAT_SPLIT))
  98 PAT_S           = $(word 3,$(PAT_SPLIT))
  99 IFUNC_DEF       = -DIFUNC_ALT=$(PAT_S)
 100 IFUNC_OPT       = $(word $(PAT_S),$(IFUNC_OPTIONS))
 101
 102 M_DEPS          = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
 103 M_SIZE          = -DN=$(PAT_N)
 104 M_IFUNC         = $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT))
 105 M_FILE          = $(PAT_BASE)_n.c
 106
 107 # The lack of explicit dependency on the source file means that VPATH cannot
 108 # work properly.  Instead, perform this operation by hand.  First, collect a
 109 # list of all .c files in the search path.
 110 all_c_files     := $(foreach dir,$(search_path),$(wildcard $(dir)/*.c))
 111
 112 # Then sort through them to find the one we want, and select the first.
 113 M_SRC           = $(firstword $(filter %/$(M_FILE), $(all_c_files)))
 114
 115 %_.lo: Makefile
 116         $(LTCOMPILE) $(M_DEPS) $(M_SIZE) $(M_IFUNC) -c -o $@ $(M_SRC)
 117
 118 ## Include all of the sizes in the "normal" set of compilation flags.
 119 libatomic_la_LIBADD = $(foreach s,$(SIZES),$(addsuffix _$(s)_.lo,$(SIZEOBJS)))
 120
 121 ## On a target-specific basis, include alternates to be selected by IFUNC.
 122 if HAVE_IFUNC
 123 if ARCH_ARM_LINUX
 124 IFUNC_OPTIONS        = -march=armv7-a -DHAVE_KERNEL64
 125 libatomic_la_LIBADD += $(foreach s,$(SIZES),$(addsuffix _$(s)_1_.lo,$(SIZEOBJS)))
 126 libatomic_la_LIBADD += $(addsuffix _8_2_.lo,$(SIZEOBJS))
 127 endif
 128 if ARCH_I386
 129 IFUNC_OPTIONS        = -march=i586
 130 libatomic_la_LIBADD += $(addsuffix _8_1_.lo,$(SIZEOBJS))
 131 endif
 132 if ARCH_X86_64
 133 IFUNC_OPTIONS        = -mcx16
 134 libatomic_la_LIBADD += $(addsuffix _16_1_.lo,$(SIZEOBJS))
 135 endif
 136 endif