###
# build: Generic definitions
#
#  Lots of this code have been borrowed or heavily inspired from parts
#  of kbuild code, which is not credited, but mostly developed by:
#
#  Copyright (C) Sam Ravnborg <sam@mars.ravnborg.org>, 2015
#  Copyright (C) Linus Torvalds <torvalds@linux-foundation.org>, 2015
#

###
# Convenient variables
comma   := ,
squote  := '

###
# Name of target with a '.' as filename prefix. foo/bar.o => foo/.bar.o
dot-target = $(dir $@).$(notdir $@)

###
# filename of target with directory and extension stripped
basetarget = $(basename $(notdir $@))

###
# The temporary file to save gcc -MD generated dependencies must not
# contain a comma
depfile = $(subst $(comma),_,$(dot-target).d)

###
# Check if both arguments has same arguments. Result is empty string if equal.
arg-check = $(strip $(filter-out $(cmd_$(1)), $(cmd_$@)) \
                    $(filter-out $(cmd_$@),   $(cmd_$(1))) )

###
# Escape single quote for use in echo statements
escsq = $(subst $(squote),'\$(squote)',$1)

# Echo command
# Short version is used, if $(quiet) equals `quiet_', otherwise full one.
echo-cmd = $(if $($(quiet)cmd_$(1)),\
           echo '  $(call escsq,$($(quiet)cmd_$(1)))';)

###
# Replace >$< with >$$< to preserve $ when reloading the .cmd file
# (needed for make)
# Replace >#< with >\#< to avoid starting a comment in the .cmd file
# (needed for make)
# Replace >'< with >'\''< to be able to enclose the whole string in '...'
# (needed for the shell)
make-cmd = $(call escsq,$(subst \#,\\\#,$(subst $$,$$$$,$(cmd_$(1)))))

###
# Find any prerequisites that is newer than target or that does not exist.
# PHONY targets skipped in both cases.
any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)

###
# Copy dependency data into .cmd file
#  - gcc -M dependency info
#  - command line to create object 'cmd_object :='
dep-cmd = $(if $(wildcard $(fixdep)),                                           \
           $(fixdep) $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;           \
           rm -f $(depfile);                                                    \
           mv -f $(dot-target).tmp $(dot-target).cmd,                           \
           printf '\# cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \
           printf '\# using basic dep data\n\n' >> $(dot-target).cmd;           \
           cat $(depfile) >> $(dot-target).cmd;                                 \
           printf '\n%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd)

###
# if_changed_dep  - execute command if any prerequisite is newer than
#                   target, or command line has changed and update
#                   dependencies in the cmd file
if_changed_dep = $(if $(strip $(any-prereq) $(arg-check)),         \
                  @set -e;                                         \
                  $(echo-cmd) $(cmd_$(1)) && $(dep-cmd))

# if_changed      - execute command if any prerequisite is newer than
#                   target, or command line has changed
if_changed = $(if $(strip $(any-prereq) $(arg-check)),                   \
              @set -e;                                                   \
              $(echo-cmd) $(cmd_$(1));                                   \
              printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd)

###
# C flags to be used in rule definitions, includes:
# - depfile generation
# - global $(CFLAGS)
# - per target C flags
# - per object C flags
# - BUILD_STR macro to allow '-D"$(variable)"' constructs
c_flags_1 = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
c_flags_2 = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(c_flags_1))
c_flags   = $(filter-out $(CFLAGS_REMOVE_$(obj)), $(c_flags_2))
cxx_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj))

###
## HOSTCC C flags

host_c_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj))
cted='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Mickaël Salaün &lt;mic@digikod.net&gt;</td><td class='right'>2017-02-10 00:21:38 +0100</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-10 15:56:06 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/bpf?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>2ee89fb9a942e250b5adb5535de4acca14bb7fa2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/bpf?id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>a2a05ae382318bb1a863aa8afee37055409e521c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/bpf?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/bpf?h=nds-private-remove&amp;id=d02d8986a7688d3f0ff6ef61aa6beb41427692eb'>d02d8986a7688d3f0ff6ef61aa6beb41427692eb</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2&amp;id2=d02d8986a7688d3f0ff6ef61aa6beb41427692eb'>diff</a>)</td></tr></table>
<div class='commit-subject'>bpf: Use bpf_load_program() from the library</div><div class='commit-msg'>Replace bpf_prog_load() with bpf_load_program() calls.

Signed-off-by: Mickaël Salaün &lt;mic@digikod.net&gt;
Cc: Alexei Starovoitov &lt;ast@fb.com&gt;
Cc: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
Cc: Shuah Khan &lt;shuah@kernel.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>Diffstat</a> (limited to 'tools/testing/selftests/bpf')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/Makefile?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/Makefile</a></td><td class='right'>4</td><td class='graph'><table summary='file diffstat' width='21%'><tr><td class='add' style='width: 14.3%;'/><td class='rem' style='width: 4.8%;'/><td class='none' style='width: 81.0%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/bpf_sys.h?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/bpf_sys.h</a></td><td class='right'>21</td><td class='graph'><table summary='file diffstat' width='21%'><tr><td class='add' style='width: 0.0%;'/><td class='rem' style='width: 100.0%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/test_tag.c?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/test_tag.c</a></td><td class='right'>6</td><td class='graph'><table summary='file diffstat' width='21%'><tr><td class='add' style='width: 19.0%;'/><td class='rem' style='width: 9.5%;'/><td class='none' style='width: 71.4%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/bpf/test_verifier.c?h=nds-private-remove&amp;id=2ee89fb9a942e250b5adb5535de4acca14bb7fa2'>tools/testing/selftests/bpf/test_verifier.c</a></td><td class='right'>8</td><td class='graph'><table summary='file diffstat' width='21%'><tr><td class='add' style='width: 23.8%;'/><td class='rem' style='width: 14.3%;'/><td class='none' style='width: 61.9%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>4 files changed, 12 insertions, 27 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile