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1 ## Copyright (C) 2012-2020 Free Software Foundation, Inc.
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2 ## Contributed by Richard Henderson <rth@redhat.com>.
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3 ##
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4 ## This file is part of the GNU Atomic Library (libatomic).
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5 ##
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6 ## Libatomic is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or
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9 ## (at your option) any later version.
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10 ##
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11 ## Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
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12 ## WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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13 ## FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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14 ## more details.
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15 ##
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16 ## Under Section 7 of GPL version 3, you are granted additional
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17 ## permissions described in the GCC Runtime Library Exception, version
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18 ## 3.1, as published by the Free Software Foundation.
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19 ##
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20 ## You should have received a copy of the GNU General Public License and
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21 ## a copy of the GCC Runtime Library Exception along with this program;
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22 ## see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 ## <http://www.gnu.org/licenses/>.
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24
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25 ACLOCAL_AMFLAGS = -I .. -I ../config
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26 SUBDIRS = testsuite
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27
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28 ## May be used by toolexeclibdir.
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29 gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
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30
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31 config_path= @config_path@
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32 search_path = $(addprefix $(top_srcdir)/config/, $(config_path)) \
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33 $(top_srcdir) $(top_builddir)
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34
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35 vpath % $(strip $(search_path))
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36
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37 DEFAULT_INCLUDES = $(addprefix -I, $(search_path))
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38 AM_CFLAGS = $(XCFLAGS)
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39 AM_CCASFLAGS = $(XCFLAGS)
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40 AM_LDFLAGS = $(XLDFLAGS) $(SECTION_LDFLAGS) $(OPT_LDFLAGS)
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41
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42 toolexeclib_LTLIBRARIES = libatomic.la
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43 noinst_LTLIBRARIES = libatomic_convenience.la
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44
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45 if LIBAT_BUILD_VERSIONED_SHLIB
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46 if LIBAT_BUILD_VERSIONED_SHLIB_GNU
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47 libatomic_version_script = -Wl,--version-script,$(top_srcdir)/libatomic.map
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48 libatomic_version_dep = $(top_srcdir)/libatomic.map
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49 endif
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50 if LIBAT_BUILD_VERSIONED_SHLIB_SUN
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51 libatomic_version_script = -Wl,-M,libatomic.map-sun
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52 libatomic_version_dep = libatomic.map-sun
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53 libatomic.map-sun : $(top_srcdir)/libatomic.map \
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54 $(top_srcdir)/../contrib/make_sunver.pl \
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55 $(libatomic_la_OBJECTS) $(libatomic_la_LIBADD)
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56 perl $(top_srcdir)/../contrib/make_sunver.pl \
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57 $(top_srcdir)/libatomic.map \
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58 $(libatomic_la_OBJECTS:%.lo=.libs/%.o) \
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59 `echo $(libatomic_la_LIBADD) | \
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60 sed 's,\([^/ ]*\)\.l\([ao]\),.libs/\1.\2,g'` \
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61 > $@ || (rm -f $@ ; exit 1)
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62 endif
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63 else
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64 libatomic_version_script =
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65 libatomic_version_dep =
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66 endif
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67 libatomic_version_info = -version-info $(libtool_VERSION)
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68
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69 libatomic_la_LDFLAGS = $(libatomic_version_info) $(libatomic_version_script) $(lt_host_flags)
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70 libatomic_la_SOURCES = gload.c gstore.c gcas.c gexch.c glfree.c lock.c init.c \
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71 fenv.c fence.c flag.c
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72
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73 SIZEOBJS = load store cas exch fadd fsub fand fior fxor fnand tas
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74 SIZES = @SIZES@
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75
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76 EXTRA_libatomic_la_SOURCES = $(addsuffix _n.c,$(SIZEOBJS))
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77 libatomic_la_DEPENDENCIES = $(libatomic_la_LIBADD) $(libatomic_version_dep)
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78
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79 ## And now our custom target patterns that allow us not to have tons of
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80 ## extra source files hanging about. Unfortunately, the complex relation
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81 ## between source and object filenames doesn't allow us to add an explicit
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82 ## dependency here. Fortunately that doesn't matter since auto-generated
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83 ## dependencies do the job just as well:
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84 -include $(wildcard $(DEPDIR)/*.Ppo)
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85
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86 ## Naming pattern: base_n_i_.lo
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87 ##
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88 ## N size of data
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89 ## I IFUNC alternative, index beginning at 1.
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90 ##
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91 ## The trailing _ in the output object file name is required to differentiate
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92 ## these objects from those which should be compiled normally. We can only
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93 ## have one stem in the implicit rule.
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94
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95 empty =
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96 space = $(empty) $(empty)
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97 PAT_SPLIT = $(subst _,$(space),$(*F))
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98 PAT_BASE = $(word 1,$(PAT_SPLIT))
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99 PAT_N = $(word 2,$(PAT_SPLIT))
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100 PAT_S = $(word 3,$(PAT_SPLIT))
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101 IFUNC_DEF = -DIFUNC_ALT=$(PAT_S)
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102 IFUNC_OPT = $(word $(PAT_S),$(IFUNC_OPTIONS))
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103
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104 M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
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105 M_SIZE = -DN=$(PAT_N)
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106 M_IFUNC = $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT))
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107 M_FILE = $(PAT_BASE)_n.c
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108
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109 # The lack of explicit dependency on the source file means that VPATH cannot
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110 # work properly. Instead, perform this operation by hand. First, collect a
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111 # list of all .c files in the search path.
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112 all_c_files := $(foreach dir,$(search_path),$(wildcard $(dir)/*.c))
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113
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114 # Then sort through them to find the one we want, and select the first.
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115 M_SRC = $(firstword $(filter %/$(M_FILE), $(all_c_files)))
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116
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117 %_.lo: Makefile
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118 $(LTCOMPILE) $(M_DEPS) $(M_SIZE) $(M_IFUNC) -c -o $@ $(M_SRC)
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119
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120 ## Include all of the sizes in the "normal" set of compilation flags.
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121 libatomic_la_LIBADD = $(foreach s,$(SIZES),$(addsuffix _$(s)_.lo,$(SIZEOBJS)))
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122
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123 ## On a target-specific basis, include alternates to be selected by IFUNC.
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124 if HAVE_IFUNC
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131
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125 if ARCH_AARCH64_LINUX
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126 IFUNC_OPTIONS = -march=armv8-a+lse
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127 libatomic_la_LIBADD += $(foreach s,$(SIZES),$(addsuffix _$(s)_1_.lo,$(SIZEOBJS)))
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128 endif
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111
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129 if ARCH_ARM_LINUX
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130 IFUNC_OPTIONS = -march=armv7-a+fp -DHAVE_KERNEL64
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131 libatomic_la_LIBADD += $(foreach s,$(SIZES),$(addsuffix _$(s)_1_.lo,$(SIZEOBJS)))
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132 libatomic_la_LIBADD += $(addsuffix _8_2_.lo,$(SIZEOBJS))
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133 endif
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134 if ARCH_I386
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135 IFUNC_OPTIONS = -march=i586
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136 libatomic_la_LIBADD += $(addsuffix _8_1_.lo,$(SIZEOBJS))
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137 endif
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138 if ARCH_X86_64
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139 IFUNC_OPTIONS = -mcx16
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140 libatomic_la_LIBADD += $(addsuffix _16_1_.lo,$(SIZEOBJS))
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141 endif
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142 endif
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143
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144 libatomic_convenience_la_SOURCES = $(libatomic_la_SOURCES)
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145 libatomic_convenience_la_LIBADD = $(libatomic_la_LIBADD)
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146
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147 # Override the automake generated all-multi rule to guarantee that all-multi
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148 # is not run in parallel with the %_.lo rules which generate $(DEPDIR)/*.Ppo
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149 # makefile fragments to avoid broken *.Ppo getting included into the Makefile
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150 # when it is reloaded during the build of all-multi.
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151 all-multi: $(libatomic_la_LIBADD)
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152 $(MULTIDO) $(AM_MAKEFLAGS) DO=all multi-do # $(MAKE)
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145
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153
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154 include $(top_srcdir)/../multilib.am
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