1## Copyright (C) 2012-2015 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 25ACLOCAL_AMFLAGS = -I .. -I ../config 26SUBDIRS = testsuite 27 28## May be used by toolexeclibdir. 29gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER) 30 31config_path= @config_path@ 32search_path = $(addprefix $(top_srcdir)/config/, $(config_path)) \ 33 $(top_srcdir) $(top_builddir) 34 35vpath % $(strip $(search_path)) 36 37DEFAULT_INCLUDES = $(addprefix -I, $(search_path)) 38AM_CFLAGS = $(XCFLAGS) 39AM_CCASFLAGS = $(XCFLAGS) 40AM_LDFLAGS = $(XLDFLAGS) $(SECTION_LDFLAGS) $(OPT_LDFLAGS) 41 42toolexeclib_LTLIBRARIES = libatomic.la 43noinst_LTLIBRARIES = libatomic_convenience.la 44 45if LIBAT_BUILD_VERSIONED_SHLIB 46if LIBAT_BUILD_VERSIONED_SHLIB_GNU 47libatomic_version_script = -Wl,--version-script,$(top_srcdir)/libatomic.map 48libatomic_version_dep = $(top_srcdir)/libatomic.map 49endif 50if LIBAT_BUILD_VERSIONED_SHLIB_SUN 51libatomic_version_script = -Wl,-M,libatomic.map-sun 52libatomic_version_dep = libatomic.map-sun 53libatomic.map-sun : $(top_srcdir)/libatomic.map \ 54 $(top_srcdir)/../contrib/make_sunver.pl \ 55 $(libatomic_la_OBJECTS) $(libatomic_la_LIBADD) 56 perl $(top_srcdir)/../contrib/make_sunver.pl \ 57 $(top_srcdir)/libatomic.map \ 58 $(libatomic_la_OBJECTS:%.lo=.libs/%.o) \ 59 `echo $(libatomic_la_LIBADD) | \ 60 sed 's,\([^/ ]*\)\.l\([ao]\),.libs/\1.\2,g'` \ 61 > $@ || (rm -f $@ ; exit 1) 62endif 63else 64libatomic_version_script = 65libatomic_version_dep = 66endif 67libatomic_version_info = -version-info $(libtool_VERSION) 68 69libatomic_la_LDFLAGS = $(libatomic_version_info) $(libatomic_version_script) $(lt_host_flags) 70libatomic_la_SOURCES = gload.c gstore.c gcas.c gexch.c glfree.c lock.c init.c \ 71 fenv.c 72 73SIZEOBJS = load store cas exch fadd fsub fand fior fxor fnand tas 74SIZES = @SIZES@ 75 76EXTRA_libatomic_la_SOURCES = $(addsuffix _n.c,$(SIZEOBJS)) 77libatomic_la_DEPENDENCIES = $(libatomic_la_LIBADD) $(libatomic_version_dep) 78 79## And now our custom target patterns that allow us not to have tons of 80## extra source files hanging about. Unfortunately, the complex relation 81## between source and object filenames doesn't allow us to add an explicit 82## dependency here. Fortunately that doesn't matter since auto-generated 83## dependencies do the job just as well: 84-include $(wildcard $(DEPDIR)/*.Ppo) 85 86## Naming pattern: base_n_i_.lo 87## 88## N size of data 89## I IFUNC alternative, index beginning at 1. 90## 91## The trailing _ in the output object file name is required to differentiate 92## these objects from those which should be compiled normally. We can only 93## have one stem in the implicit rule. 94 95empty = 96space = $(empty) $(empty) 97PAT_SPLIT = $(subst _,$(space),$(*F)) 98PAT_BASE = $(word 1,$(PAT_SPLIT)) 99PAT_N = $(word 2,$(PAT_SPLIT)) 100PAT_S = $(word 3,$(PAT_SPLIT)) 101IFUNC_DEF = -DIFUNC_ALT=$(PAT_S) 102IFUNC_OPT = $(word $(PAT_S),$(IFUNC_OPTIONS)) 103 104M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo 105M_SIZE = -DN=$(PAT_N) 106M_IFUNC = $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT)) 107M_FILE = $(PAT_BASE)_n.c 108 109# The lack of explicit dependency on the source file means that VPATH cannot 110# work properly. Instead, perform this operation by hand. First, collect a 111# list of all .c files in the search path. 112all_c_files := $(foreach dir,$(search_path),$(wildcard $(dir)/*.c)) 113 114# Then sort through them to find the one we want, and select the first. 115M_SRC = $(firstword $(filter %/$(M_FILE), $(all_c_files))) 116 117%_.lo: Makefile 118 $(LTCOMPILE) $(M_DEPS) $(M_SIZE) $(M_IFUNC) -c -o $@ $(M_SRC) 119 120## Include all of the sizes in the "normal" set of compilation flags. 121libatomic_la_LIBADD = $(foreach s,$(SIZES),$(addsuffix _$(s)_.lo,$(SIZEOBJS))) 122 123## On a target-specific basis, include alternates to be selected by IFUNC. 124if HAVE_IFUNC 125if ARCH_ARM_LINUX 126IFUNC_OPTIONS = -march=armv7-a -DHAVE_KERNEL64 127libatomic_la_LIBADD += $(foreach s,$(SIZES),$(addsuffix _$(s)_1_.lo,$(SIZEOBJS))) 128libatomic_la_LIBADD += $(addsuffix _8_2_.lo,$(SIZEOBJS)) 129endif 130if ARCH_I386 131IFUNC_OPTIONS = -march=i586 132libatomic_la_LIBADD += $(addsuffix _8_1_.lo,$(SIZEOBJS)) 133endif 134if ARCH_X86_64 135IFUNC_OPTIONS = -mcx16 136libatomic_la_LIBADD += $(addsuffix _16_1_.lo,$(SIZEOBJS)) 137endif 138endif 139 140libatomic_convenience_la_SOURCES = $(libatomic_la_SOURCES) 141libatomic_convenience_la_LIBADD = $(libatomic_la_LIBADD) 142 143# Override the automake generated all-multi rule to guarantee that all-multi 144# is not run in parallel with the %_.lo rules which generate $(DEPDIR)/*.Ppo 145# makefile fragments to avoid broken *.Ppo getting included into the Makefile 146# when it is reloaded during the build of all-multi. 147all-multi: $(libatomic_la_LIBADD) 148 $(MULTIDO) $(AM_MAKEFLAGS) DO=all multi-do # $(MAKE) 149