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f78667bd91
Presently, we check for compiler support for the required intrinsics both with and without extra compiler flags (e.g., -mxsave), and then depending on the results of those checks, we pick which files to compile with which flags. This is tedious and complicated, and it results in unsustainable coding patterns such as separate files for each portion of code may need to be built with different compiler flags. This commit introduces support for __attribute__((target(...))) and uses it for the AVX-512 code. This simplifies both the configure-time checks and the build scripts, and it allows us to place the functions that use the intrinsics in files that we otherwise do not want to build with special CPU instructions. We are careful to avoid using __attribute__((target(...))) on compilers that do not understand it, but we still perform the configure-time checks in case the compiler allows using the intrinsics without it (e.g., MSVC). A similar change could likely be made for some of the CRC-32C code, but that is left as a future exercise. Suggested-by: Andres Freund Reviewed-by: Raghuveer Devulapalli, Andres Freund Discussion: https://postgr.es/m/20240731205254.vfpap7uxwmebqeaf%40awork3.anarazel.de
158 lines
4.8 KiB
Makefile
158 lines
4.8 KiB
Makefile
#-------------------------------------------------------------------------
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#
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# Makefile
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# Makefile for src/port
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#
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# These files are used by the Postgres backend, and also by frontend
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# programs. Primarily, they are meant to provide portability on systems
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# with broken/missing library files.
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#
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# This makefile generates three outputs:
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#
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# libpgport.a - contains object files with FRONTEND defined,
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# for use by client applications
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#
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# libpgport_shlib.a - contains object files with FRONTEND defined,
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# built suitably for use in shared libraries; for use
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# by frontend libraries
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#
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# libpgport_srv.a - contains object files without FRONTEND defined,
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# for use only by the backend
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#
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# LIBOBJS is set by configure (via Makefile.global) to be the list of object
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# files that are conditionally needed as determined by configure's probing.
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# OBJS adds additional object files that are always compiled.
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#
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# IDENTIFICATION
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# src/port/Makefile
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#
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#-------------------------------------------------------------------------
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subdir = src/port
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top_builddir = ../..
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include $(top_builddir)/src/Makefile.global
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override CPPFLAGS := -I$(top_builddir)/src/port -DFRONTEND $(CPPFLAGS)
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LIBS += $(PTHREAD_LIBS)
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OBJS = \
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$(LIBOBJS) \
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$(PG_CRC32C_OBJS) \
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bsearch_arg.o \
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chklocale.o \
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inet_net_ntop.o \
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noblock.o \
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path.o \
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pg_bitutils.o \
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pg_popcount_avx512.o \
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pg_strong_random.o \
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pgcheckdir.o \
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pgmkdirp.o \
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pgsleep.o \
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pgstrcasecmp.o \
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pgstrsignal.o \
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pqsignal.o \
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qsort.o \
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qsort_arg.o \
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quotes.o \
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snprintf.o \
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strerror.o \
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tar.o
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# libpgport.a, libpgport_shlib.a, and libpgport_srv.a contain the same files
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# foo.o, foo_shlib.o, and foo_srv.o are all built from foo.c
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OBJS_SHLIB = $(OBJS:%.o=%_shlib.o)
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OBJS_SRV = $(OBJS:%.o=%_srv.o)
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all: libpgport.a libpgport_shlib.a libpgport_srv.a
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# libpgport is needed by some contrib
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install: all installdirs
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$(INSTALL_STLIB) libpgport.a '$(DESTDIR)$(libdir)/libpgport.a'
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$(INSTALL_STLIB) libpgport_shlib.a '$(DESTDIR)$(libdir)/libpgport_shlib.a'
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installdirs:
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$(MKDIR_P) '$(DESTDIR)$(libdir)'
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uninstall:
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rm -f '$(DESTDIR)$(libdir)/libpgport.a'
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rm -f '$(DESTDIR)$(libdir)/libpgport_shlib.a'
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libpgport.a: $(OBJS)
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rm -f $@
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$(AR) $(AROPT) $@ $^
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# all versions of pg_crc32c_sse42.o need CFLAGS_CRC
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pg_crc32c_sse42.o: CFLAGS+=$(CFLAGS_CRC)
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pg_crc32c_sse42_shlib.o: CFLAGS+=$(CFLAGS_CRC)
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pg_crc32c_sse42_srv.o: CFLAGS+=$(CFLAGS_CRC)
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# all versions of pg_crc32c_armv8.o need CFLAGS_CRC
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pg_crc32c_armv8.o: CFLAGS+=$(CFLAGS_CRC)
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pg_crc32c_armv8_shlib.o: CFLAGS+=$(CFLAGS_CRC)
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pg_crc32c_armv8_srv.o: CFLAGS+=$(CFLAGS_CRC)
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#
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# Shared library versions of object files
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#
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libpgport_shlib.a: $(OBJS_SHLIB)
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rm -f $@
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$(AR) $(AROPT) $@ $^
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# Because this uses its own compilation rule, it doesn't use the
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# dependency tracking logic from Makefile.global. To make sure that
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# dependency tracking works anyway for the *_shlib.o files, depend on
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# their *.o siblings as well, which do have proper dependencies. It's
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# a hack that might fail someday if there is a *_shlib.o without a
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# corresponding *.o, but there seems little reason for that.
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%_shlib.o: %.c %.o
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$(CC) $(CFLAGS) $(CFLAGS_SL) $(CPPFLAGS) -c $< -o $@
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#
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# Server versions of object files
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#
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libpgport_srv.a: $(OBJS_SRV)
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rm -f $@
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$(AR) $(AROPT) $@ $^
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# Because this uses its own compilation rule, it doesn't use the
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# dependency tracking logic from Makefile.global. To make sure that
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# dependency tracking works anyway for the *_srv.o files, depend on
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# their *.o siblings as well, which do have proper dependencies. It's
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# a hack that might fail someday if there is a *_srv.o without a
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# corresponding *.o, but it works for now (and those would probably go
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# into src/backend/port/ anyway).
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%_srv.o: %.c %.o
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$(CC) $(CFLAGS) $(subst -DFRONTEND,, $(CPPFLAGS)) -c $< -o $@
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# Dependency is to ensure that path changes propagate
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path.o: path.c pg_config_paths.h
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path_shlib.o: path.c pg_config_paths.h
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path_srv.o: path.c pg_config_paths.h
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# We create a separate file rather than put these in pg_config.h
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# because many of these values come from makefiles and are not
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# available to configure.
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pg_config_paths.h: $(top_builddir)/src/Makefile.global
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echo "#define PGBINDIR \"$(bindir)\"" >$@
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echo "#define PGSHAREDIR \"$(datadir)\"" >>$@
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echo "#define SYSCONFDIR \"$(sysconfdir)\"" >>$@
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echo "#define INCLUDEDIR \"$(includedir)\"" >>$@
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echo "#define PKGINCLUDEDIR \"$(pkgincludedir)\"" >>$@
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echo "#define INCLUDEDIRSERVER \"$(includedir_server)\"" >>$@
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echo "#define LIBDIR \"$(libdir)\"" >>$@
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echo "#define PKGLIBDIR \"$(pkglibdir)\"" >>$@
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echo "#define LOCALEDIR \"$(localedir)\"" >>$@
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echo "#define DOCDIR \"$(docdir)\"" >>$@
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echo "#define HTMLDIR \"$(htmldir)\"" >>$@
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echo "#define MANDIR \"$(mandir)\"" >>$@
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clean distclean:
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rm -f libpgport.a libpgport_shlib.a libpgport_srv.a
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rm -f $(OBJS) $(OBJS_SHLIB) $(OBJS_SRV) pg_config_paths.h
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