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192 lines
9.0 KiB
192 lines
9.0 KiB
3 years ago
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commit 0dcbf4c8705309af8c8c1620491c60539901a3b0
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Author: Joseph Myers <joseph@codesourcery.com>
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Date: Fri Sep 17 13:12:10 2021 +0000
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Run conform/ tests using newly built libc
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Although the conform/ header tests are built using the headers of the
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glibc under test, the execution tests from conformtest (a few tests of
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the values of macros evaluating to string constants) are linked and
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run with system libc, not the newly built libc.
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Apart from preventing testing in cross environments, this can be a
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problem even for native testing. Specifically, it can be useful to do
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native testing when building with a cross compiler that links with a
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libc that is not the system libc; for example, on x86_64, you can test
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all three ABIs that way if the kernel support is present, even if the
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host OS lacks 32-bit or x32 libraries or they are older than the
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libraries in the sysroot used by the compiler used to build glibc.
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This works for almost all tests, but not for these conformtest tests.
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Arrange for conformtest to link and run test programs similarly to
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other tests, with consequent refactoring of various variables in
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Makeconfig to allow passing relevant parts of the link-time command
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lines down to conformtest. In general, the parts of the link command
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involving $@ or $^ are separated out from the parts that should be
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passed to conformtest (the variables passed to conformtest still
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involve various variables whose names involve $(@F), but those
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variables simply won't be defined for the conformtest makefile rules
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and I think their presence there is harmless).
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This is also most of the support that would be needed to allow running
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those tests of string constants for cross testing when test-wrapper is
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defined. That will also need changes to where conformtest.py puts the
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test executables, so it puts them in the main object directory
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(expected to be shared with a test system in cross testing) rather
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than /tmp (not expected to be shared) as at present.
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Tested for x86_64.
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(cherry picked from commit f3eef963902d0f54f68cffc74f79b97f4d6154b7)
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diff --git a/Makeconfig b/Makeconfig
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index 68663d984e6a1264..2fa0884b4eee5e53 100644
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--- a/Makeconfig
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+++ b/Makeconfig
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@@ -412,12 +412,13 @@ link-extra-libs-tests = $(libsupport)
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# Command for linking PIE programs with the C library.
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ifndef +link-pie
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-+link-pie-before-libc = $(if $($(@F)-no-pie),$(no-pie-ldflag),-pie) \
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- -Wl,-O1 -nostdlib -nostartfiles -o $@ \
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++link-pie-before-inputs = $(if $($(@F)-no-pie),$(no-pie-ldflag),-pie) \
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+ -Wl,-O1 -nostdlib -nostartfiles \
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$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
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$(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
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$(firstword $(CRT-$(@F)) $(csu-objpfx)S$(start-installed-name)) \
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- $(+preinit) $(+prectorS) \
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+ $(+preinit) $(+prectorS)
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++link-pie-before-libc = -o $@ $(+link-pie-before-inputs) \
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$(filter-out $(addprefix $(csu-objpfx),start.o \
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S$(start-installed-name))\
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$(+preinit) $(link-extra-libs) \
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@@ -442,11 +443,12 @@ endef
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endif
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# Command for statically linking programs with the C library.
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ifndef +link-static
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-+link-static-before-libc = -nostdlib -nostartfiles -static -o $@ \
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++link-static-before-inputs = -nostdlib -nostartfiles -static \
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$(if $($(@F)-no-pie),$(no-pie-ldflag),$(default-pie-ldflag)) \
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$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
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$(firstword $(CRT-$(@F)) $(csu-objpfx)$(real-static-start-installed-name)) \
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- $(+preinit) $(+prectorT) \
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+ $(+preinit) $(+prectorT)
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++link-static-before-libc = -o $@ $(+link-static-before-inputs) \
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$(filter-out $(addprefix $(csu-objpfx),start.o \
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$(start-installed-name))\
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$(+preinit) $(link-extra-libs-static) \
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@@ -473,13 +475,16 @@ endif
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ifeq (yes,$(build-pie-default))
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+link = $(+link-pie)
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+link-tests = $(+link-pie-tests)
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++link-tests-before-inputs = $(+link-pie-before-inputs) $(rtld-tests-LDFLAGS)
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++link-tests-after-inputs = $(link-libc-tests) $(+link-pie-after-libc)
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+link-printers-tests = $(+link-pie-printers-tests)
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else # not build-pie-default
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-+link-before-libc = -nostdlib -nostartfiles -o $@ \
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++link-before-inputs = -nostdlib -nostartfiles \
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$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
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$(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
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$(firstword $(CRT-$(@F)) $(csu-objpfx)$(start-installed-name)) \
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- $(+preinit) $(+prector) \
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+ $(+preinit) $(+prector)
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++link-before-libc = -o $@ $(+link-before-inputs) \
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$(filter-out $(addprefix $(csu-objpfx),start.o \
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$(start-installed-name))\
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$(+preinit) $(link-extra-libs) \
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@@ -491,6 +496,8 @@ $(CC) $(link-libc-rpath-link) $(+link-before-libc) $(rtld-LDFLAGS) \
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$(link-extra-flags) $(link-libc) $(+link-after-libc)
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$(call after-link,$@)
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endef
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++link-tests-before-inputs = $(+link-before-inputs) $(rtld-tests-LDFLAGS)
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++link-tests-after-inputs = $(link-libc-tests) $(+link-after-libc)
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define +link-tests
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$(CC) $(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
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$(+link-after-libc)
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@@ -505,6 +512,8 @@ endif # build-pie-default
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else # build-static
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+link = $(+link-static)
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+link-tests = $(+link-static-tests)
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++link-tests-before-inputs = $(+link-static-before-inputs)
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++link-tests-after-inputs = $(link-libc-static-tests) $(+link-static-after-libc)
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+link-printers-tests = $(+link-static-tests)
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endif # build-shared
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endif # +link
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diff --git a/conform/Makefile b/conform/Makefile
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index c64a83a905b991cc..296db818f0a72253 100644
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--- a/conform/Makefile
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+++ b/conform/Makefile
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@@ -176,6 +176,9 @@ $(conformtest-header-tests): $(objpfx)%/conform.out: \
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(set -e; std_hdr=$*; std=$${std_hdr%%/*}; hdr=$${std_hdr#*/}; \
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mkdir -p $(@D); \
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$(PYTHON) $< --cc='$(CC)' --flags='$(conformtest-cc-flags)' \
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+ --ldflags='$(+link-tests-before-inputs)' \
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+ --libs='$(+link-tests-after-inputs)' \
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+ --run-program-prefix='$(run-program-prefix)' \
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--standard=$$std --header=$$hdr $(conformtest-xfail) \
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$(conformtest-cross) \
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> $@ 2>&1); \
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diff --git a/conform/conformtest.py b/conform/conformtest.py
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index f0405b71869831f9..4898e16c9fb96503 100644
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--- a/conform/conformtest.py
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+++ b/conform/conformtest.py
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@@ -381,12 +381,16 @@ class MacroStrTest(object):
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class HeaderTests(object):
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"""The set of tests run for a header."""
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- def __init__(self, header, standard, cc, flags, cross, xfail):
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+ def __init__(self, header, standard, cc, flags, ldflags, libs,
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+ run_program_prefix, cross, xfail):
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"""Initialize a HeaderTests object."""
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self.header = header
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self.standard = standard
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self.cc = cc
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self.flags = flags
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+ self.ldflags = ldflags
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+ self.libs = libs
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+ self.run_program_prefix = run_program_prefix
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self.cross = cross
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self.xfail_str = xfail
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self.cflags_namespace = ('%s -fno-builtin %s -D_ISOMAC'
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@@ -590,7 +594,8 @@ class HeaderTests(object):
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exe_file = os.path.join(self.temp_dir, 'test')
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with open(c_file, 'w') as c_file_out:
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c_file_out.write('#include <%s>\n%s' % (self.header, text))
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- cmd = ('%s %s %s -o %s' % (self.cc, self.cflags, c_file, exe_file))
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+ cmd = ('%s %s %s %s %s -o %s' % (self.cc, self.cflags, self.ldflags,
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+ c_file, self.libs, exe_file))
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try:
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subprocess.check_call(cmd, shell=True)
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except subprocess.CalledProcessError:
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@@ -600,7 +605,9 @@ class HeaderTests(object):
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self.note_skip(name)
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return
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try:
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- subprocess.check_call(exe_file, shell=True)
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+ subprocess.check_call('%s %s' % (self.run_program_prefix,
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+ exe_file),
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+ shell=True)
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except subprocess.CalledProcessError:
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self.note_error(name, self.group_xfail)
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return
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@@ -719,12 +726,19 @@ def main():
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help='C compiler to use')
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parser.add_argument('--flags', metavar='CFLAGS',
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help='Compiler flags to use with CC')
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+ parser.add_argument('--ldflags', metavar='LDFLAGS',
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+ help='Compiler arguments for linking before inputs')
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+ parser.add_argument('--libs', metavar='LIBS',
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+ help='Compiler arguments for linking after inputs')
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+ parser.add_argument('--run-program-prefix', metavar='RUN-PROGRAM-PREFIX',
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+ help='Wrapper for running newly built program')
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parser.add_argument('--cross', action='store_true',
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help='Do not run compiled test programs')
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parser.add_argument('--xfail', metavar='COND',
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help='Name of condition for XFAILs')
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args = parser.parse_args()
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tests = HeaderTests(args.header, args.standard, args.cc, args.flags,
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+ args.ldflags, args.libs, args.run_program_prefix,
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args.cross, args.xfail)
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tests.run()
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