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-rw-r--r--src/port/Makefile55
1 files changed, 43 insertions, 12 deletions
diff --git a/src/port/Makefile b/src/port/Makefile
index a2ee8e2d6d0..ec62a31d29f 100644
--- a/src/port/Makefile
+++ b/src/port/Makefile
@@ -1,18 +1,23 @@
#-------------------------------------------------------------------------
#
# Makefile
-# Makefile for the port-specific subsystem of the backend
+# Makefile for src/port
#
-# These files are used in other directories for portability on systems
-# with broken/missing library files, and for common code sharing.
+# These files are used by the Postgres backend, and also by frontend
+# programs. Primarily, they are meant to provide portability on systems
+# with broken/missing library files.
#
-# This makefile generates two outputs:
+# This makefile generates three outputs:
#
# libpgport.a - contains object files with FRONTEND defined,
-# for use by client application and libraries
+# for use by client applications
+#
+# libpgport_shlib.a - contains object files with FRONTEND defined,
+# built suitably for use in shared libraries; for use
+# by libpq and other frontend libraries
#
# libpgport_srv.a - contains object files without FRONTEND defined,
-# for use only by the backend binaries
+# for use only by the backend
#
# LIBOBJS is set by configure (via Makefile.global) to be the list of object
# files that are conditionally needed as determined by configure's probing.
@@ -40,12 +45,15 @@ ifeq ($(enable_strong_random), yes)
OBJS += pg_strong_random.o
endif
-# foo_srv.o and foo.o are both built from foo.c, but only foo.o has -DFRONTEND
+# libpgport.a, libpgport_shlib.a, and libpgport_srv.a contain the same files
+# foo.o, foo_shlib.o, and foo_srv.o are all built from foo.c
+OBJS_SHLIB = $(OBJS:%.o=%_shlib.o)
OBJS_SRV = $(OBJS:%.o=%_srv.o)
-all: libpgport.a libpgport_srv.a
+all: libpgport.a libpgport_shlib.a libpgport_srv.a
# libpgport is needed by some contrib
+# currently we don't install libpgport_shlib.a, maybe we should?
install: all installdirs
$(INSTALL_STLIB) libpgport.a '$(DESTDIR)$(libdir)/libpgport.a'
@@ -59,18 +67,38 @@ libpgport.a: $(OBJS)
rm -f $@
$(AR) $(AROPT) $@ $^
-# thread.o needs PTHREAD_CFLAGS (but thread_srv.o does not)
+# thread.o and thread_shlib.o need PTHREAD_CFLAGS (but thread_srv.o does not)
thread.o: CFLAGS+=$(PTHREAD_CFLAGS)
+thread_shlib.o: CFLAGS+=$(PTHREAD_CFLAGS)
-# pg_crc32c_sse42.o and its _srv.o version need CFLAGS_SSE42
+# all versions of pg_crc32c_sse42.o need CFLAGS_SSE42
pg_crc32c_sse42.o: CFLAGS+=$(CFLAGS_SSE42)
+pg_crc32c_sse42_shlib.o: CFLAGS+=$(CFLAGS_SSE42)
pg_crc32c_sse42_srv.o: CFLAGS+=$(CFLAGS_SSE42)
-# pg_crc32c_armv8.o and its _srv.o version need CFLAGS_ARMV8_CRC32C
+# all versions of pg_crc32c_armv8.o need CFLAGS_ARMV8_CRC32C
pg_crc32c_armv8.o: CFLAGS+=$(CFLAGS_ARMV8_CRC32C)
+pg_crc32c_armv8_shlib.o: CFLAGS+=$(CFLAGS_ARMV8_CRC32C)
pg_crc32c_armv8_srv.o: CFLAGS+=$(CFLAGS_ARMV8_CRC32C)
#
+# Shared library versions of object files
+#
+
+libpgport_shlib.a: $(OBJS_SHLIB)
+ rm -f $@
+ $(AR) $(AROPT) $@ $^
+
+# Because this uses its own compilation rule, it doesn't use the
+# dependency tracking logic from Makefile.global. To make sure that
+# dependency tracking works anyway for the *_shlib.o files, depend on
+# their *.o siblings as well, which do have proper dependencies. It's
+# a hack that might fail someday if there is a *_shlib.o without a
+# corresponding *.o, but there seems little reason for that.
+%_shlib.o: %.c %.o
+ $(CC) $(CFLAGS) $(CFLAGS_SL) $(CPPFLAGS) -c $< -o $@
+
+#
# Server versions of object files
#
@@ -92,6 +120,8 @@ libpgport_srv.a: $(OBJS_SRV)
path.o: path.c pg_config_paths.h
+path_shlib.o: path.c pg_config_paths.h
+
path_srv.o: path.c pg_config_paths.h
# We create a separate file rather than put these in pg_config.h
@@ -112,4 +142,5 @@ pg_config_paths.h: $(top_builddir)/src/Makefile.global
echo "#define MANDIR \"$(mandir)\"" >>$@
clean distclean maintainer-clean:
- rm -f libpgport.a libpgport_srv.a $(OBJS) $(OBJS_SRV) pg_config_paths.h
+ rm -f libpgport.a libpgport_shlib.a libpgport_srv.a
+ rm -f $(OBJS) $(OBJS_SHLIB) $(OBJS_SRV) pg_config_paths.h