1 #-------------------------------------------------------------------------
4 # Common rules for building shared libraries
6 # Copyright (c) 1998, Regents of the University of California
11 #-------------------------------------------------------------------------
13 # This file should be included by any Postgres module Makefile that
14 # wants to build a shared library (if possible for the current
15 # platform). A static library is also built from the same object
16 # files. Only one library can be built per makefile.
18 # Before including this file, the module Makefile must define these
21 # NAME Name of library to build (no suffix nor "lib" prefix)
22 # OBJS List of object files to include in library
23 # SHLIB_LINK Stuff to append to library's link command
24 # (typically, -L and -l switches for external libraries)
25 # SHLIB_LINK_INTERNAL -L and -l switches for Postgres-supplied libraries
26 # SHLIB_PREREQS Order-only prerequisites for library build target
27 # SHLIB_EXPORTS (optional) Name of file containing list of symbols to
28 # export, in the format "function_name number"
30 # Don't use SHLIB_LINK for references to files in the build tree, or the
31 # wrong things will happen --- use SHLIB_LINK_INTERNAL for those!
33 # When building a shared library, the following version information
34 # must also be set. It should be omitted when building a dynamically
37 # SO_MAJOR_VERSION Major version number to use for shared library
38 # SO_MINOR_VERSION Minor version number to use for shared library
39 # (If you want a patchlevel, include it in SO_MINOR_VERSION, e.g., "6.2".)
41 # The module Makefile must also include
42 # $(top_builddir)/src/Makefile.global before including this file.
43 # (Makefile.global sets PORTNAME and other needed symbols.)
45 # This makefile provides the following (phony) targets:
47 # all-lib build the static and shared (if applicable) libraries
48 # install-lib install the libraries into $(libdir)
49 # installdirs-lib create installation directory $(libdir)
50 # uninstall-lib remove the libraries from $(libdir)
51 # clean-lib delete the static and shared libraries from the build dir
53 # Typically you would add `all-lib' to the `all' target so that `make all'
54 # builds the libraries. In the most simple case it would look like this:
58 # Similarly, the install rule might look like
60 # install: install-lib
62 # plus any additional things you want to install. Et cetera.
64 # Got that? Look at src/interfaces/libpq/Makefile for an example.
68 COMPILER = $(CC) $(CFLAGS)
69 LINK.static = $(AR) $(AROPT)
71 LDFLAGS_INTERNAL += $(SHLIB_LINK_INTERNAL)
75 ifdef SO_MAJOR_VERSION
76 # Default library naming convention used by the majority of platforms
77 shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
78 shlib_major = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
79 shlib_bare = lib$(NAME)$(DLSUFFIX)
80 # Testing the soname variable is a reliable way to determine whether a
81 # linkable library is being built.
82 soname = $(shlib_major)
83 pkgconfigdir = $(libdir)/pkgconfig
85 # Naming convention for dynamically loadable modules
86 shlib = $(NAME)$(DLSUFFIX)
91 # additional flags for backend modules
92 SHLIB_LINK += $(BE_DLLLIBS)
95 # For each platform we support shared libraries on, set shlib to the
96 # name of the library (if default above is not right), set
97 # LINK.shared to the command to link the library,
98 # and adjust SHLIB_LINK if necessary.
100 # Try to keep the sections in some kind of order, folks...
102 override CFLAGS += $(CFLAGS_SL)
103 override CXXFLAGS += $(CFLAGS_SL)
104 ifdef SO_MAJOR_VERSION
105 # libraries ought to use this to refer to versioned gettext domain names
106 override CPPFLAGS += -DSO_MAJOR_VERSION=$(SO_MAJOR_VERSION)
109 ifeq ($(PORTNAME), aix)
110 LINK.shared = $(COMPILER)
111 ifdef SO_MAJOR_VERSION
112 shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
115 # $(exports_file) is also usable as an import file
116 exports_file = lib$(NAME).exp
117 BUILD.exports = ( echo '\#! $(shlib)'; $(AWK) '/^[^\#]/ {printf "%s\n",$$1}' $< ) > $@
118 ifneq (,$(SHLIB_EXPORTS))
119 LINK.shared += -Wl,-bE:$(exports_file)
123 ifeq ($(PORTNAME), darwin)
126 ifneq ($(SO_MAJOR_VERSION), 0)
127 version_link = -compatibility_version $(SO_MAJOR_VERSION) -current_version $(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
129 LINK.shared = $(COMPILER) -dynamiclib -install_name '$(libdir)/lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)' $(version_link) $(exported_symbols_list) -multiply_defined suppress
130 shlib = lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)
131 shlib_major = lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)
134 LINK.shared = $(COMPILER) -bundle -multiply_defined suppress
136 BUILD.exports = $(AWK) '/^[^\#]/ {printf "_%s\n",$$1}' $< >$@
137 exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
138 ifneq (,$(exports_file))
139 exported_symbols_list = -exported_symbols_list $(exports_file)
143 ifeq ($(PORTNAME), openbsd)
144 LINK.shared = $(COMPILER) -shared
146 LINK.shared += -Wl,-x,-soname,$(soname)
148 BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
149 exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
150 ifneq (,$(exports_file))
151 LINK.shared += -Wl,--version-script=$(exports_file)
156 ifeq ($(PORTNAME), freebsd)
157 ifdef SO_MAJOR_VERSION
158 shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
160 LINK.shared = $(COMPILER) -shared
162 LINK.shared += -Wl,-x,-soname,$(soname)
164 BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
165 exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
166 ifneq (,$(exports_file))
167 LINK.shared += -Wl,--version-script=$(exports_file)
171 ifeq ($(PORTNAME), netbsd)
172 LINK.shared = $(COMPILER) -shared
174 LINK.shared += -Wl,-x,-soname,$(soname)
176 BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
177 exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
178 ifneq (,$(exports_file))
179 LINK.shared += -Wl,--version-script=$(exports_file)
183 ifeq ($(PORTNAME), linux)
184 LINK.shared = $(COMPILER) -shared
186 LINK.shared += -Wl,-soname,$(soname)
188 BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
189 exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
190 ifneq (,$(exports_file))
191 LINK.shared += -Wl,--version-script=$(exports_file)
195 ifeq ($(PORTNAME), solaris)
196 LINK.shared = $(COMPILER) -shared
198 LINK.shared += -Wl,-soname,$(soname)
200 BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
201 exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
202 ifneq (,$(exports_file))
203 LINK.shared += -Wl,-M$(exports_file)
207 ifeq ($(PORTNAME), cygwin)
208 LINK.shared = $(CC) -shared
209 ifdef SO_MAJOR_VERSION
210 shlib = cyg$(NAME)$(DLSUFFIX)
215 ifeq ($(PORTNAME), win32)
216 ifdef SO_MAJOR_VERSION
217 shlib = lib$(NAME)$(DLSUFFIX)
223 # If the shared library doesn't have an export file, mark all symbols not
224 # explicitly exported using PGDLLEXPORT as hidden. We can't pass these flags
225 # when building a library with explicit exports, as the symbols would be
226 # hidden before the linker script / exported symbol list takes effect.
228 # This is duplicated in pgxs.mk for MODULES style libraries.
229 ifeq ($(SHLIB_EXPORTS),)
230 # LDFLAGS_SL addition not strictly needed, CFLAGS used everywhere, but ...
231 override LDFLAGS_SL += $(CFLAGS_SL_MODULE)
232 override CFLAGS += $(CFLAGS_SL_MODULE)
233 override CXXFLAGS += $(CXXFLAGS_SL_MODULE)
241 .PHONY: all-lib all-static-lib all-shared-lib
243 all-lib: all-shared-lib
245 # no static library when building a dynamically loadable module
246 all-lib: all-static-lib
247 all-lib: lib$(NAME).pc
250 all-static-lib: $(stlib)
252 all-shared-lib: $(shlib)
254 # In this rule, "touch $@" works around a problem on some platforms wherein
255 # ar updates the library file's mod time with a value calculated to
256 # seconds precision. If the filesystem has sub-second timestamps, this can
257 # cause the library file to appear older than its input files, triggering
258 # parallel-make problems.
260 $(stlib): $(OBJS) | $(SHLIB_PREREQS)
266 # AIX wraps shared libraries inside a static library, can be used both
267 # for static and shared linking
268 ifeq ($(PORTNAME), aix)
271 $(AR) $(AROPT) $(stlib) $(shlib)
274 ifeq (,$(filter cygwin win32,$(PORTNAME)))
277 $(shlib): $(OBJS) | $(SHLIB_PREREQS)
278 $(LINK.shared) -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK)
280 # If we're using major and minor versions, then make a symlink to major-version-only.
281 ifneq ($(shlib), $(shlib_major))
283 $(LN_S) $(shlib) $(shlib_major)
285 # Make sure we have a link to a name without any version numbers
286 ifneq ($(shlib), $(shlib_bare))
287 # except on AIX, where that's not a thing
288 ifneq ($(PORTNAME), aix)
290 $(LN_S) $(shlib) $(shlib_bare)
295 # Where possible, restrict the symbols exported by the library to just the
296 # official list, so as to avoid unintentional ABI changes. On recent macOS
297 # this also quiets multiply-defined-symbol warnings in programs that use
298 # libpgport along with libpq.
299 ifneq (,$(SHLIB_EXPORTS))
301 $(shlib): $(exports_file)
303 $(exports_file): $(SHLIB_EXPORTS)
308 else # PORTNAME == cygwin || PORTNAME == win32
310 ifeq ($(PORTNAME), cygwin)
314 $(shlib): $(OBJS) | $(SHLIB_PREREQS)
315 $(CC) $(CFLAGS) -shared -o $@ -Wl,--out-implib=$(stlib) $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) $(LDAP_LIBS_BE)
317 # see notes in src/backend/parser/Makefile about use of this type of rule
325 # See notes in src/backend/parser/Makefile about the following two rules
329 # XXX A backend that loads a module linked with libgcc_s_dw2-1.dll will exit
330 # uncleanly, hence -static-libgcc. (Last verified with MinGW-w64 compilers
331 # from i686-4.9.1-release-win32-dwarf-rt_v3-rev1.) Shared libgcc has better
332 # support for C++/Java exceptions; while core PostgreSQL does not use them, it
333 # would be nice to support shared libgcc for the benefit of extensions.
335 # If SHLIB_EXPORTS is set, the rules below will build a .def file from that.
336 # Else we just use --export-all-symbols.
337 ifeq (,$(SHLIB_EXPORTS))
338 $(shlib): $(OBJS) | $(SHLIB_PREREQS)
339 $(CC) $(CFLAGS) -shared -static-libgcc -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) -Wl,--export-all-symbols -Wl,--out-implib=$(stlib)
341 DLL_DEFFILE = lib$(NAME)dll.def
343 $(shlib): $(OBJS) $(DLL_DEFFILE) | $(SHLIB_PREREQS)
344 $(CC) $(CFLAGS) -shared -static-libgcc -o $@ $(OBJS) $(DLL_DEFFILE) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) -Wl,--out-implib=$(stlib)
346 UC_NAME = $(shell echo $(NAME) | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')
348 $(DLL_DEFFILE): $(SHLIB_EXPORTS)
349 echo 'LIBRARY LIB$(UC_NAME).dll' >$@
351 sed -e '/^#/d' -e 's/^\(.*[ ]\)\([0-9][0-9]*\)/ \1@ \2/' $< >>$@
354 endif # PORTNAME == cygwin
355 endif # PORTNAME == cygwin || PORTNAME == win32
358 %.pc: $(MAKEFILE_LIST)
359 echo 'prefix=$(prefix)' >$@
360 echo 'exec_prefix=$(patsubst $(prefix),$${prefix},$(exec_prefix))' >>$@
361 echo 'libdir=$(patsubst $(exec_prefix)/%,$${exec_prefix}/%,$(libdir))' >>$@
362 echo 'includedir=$(patsubst $(prefix)/%,$${prefix}/%,$(includedir))' >>$@
364 echo 'Name: lib$(NAME)' >>$@
365 echo 'Description: PostgreSQL lib$(NAME) library' >>$@
366 echo 'URL: $(PACKAGE_URL)' >>$@
367 echo 'Version: $(VERSION)' >>$@
368 echo 'Requires: ' >>$@
369 echo 'Requires.private: $(PKG_CONFIG_REQUIRES_PRIVATE)' >>$@
370 echo 'Cflags: -I$${includedir}' >>$@
371 echo 'Libs: -L$${libdir} -l$(NAME)' >>$@
372 # Record -L flags that the user might have passed in to the PostgreSQL
373 # build to locate third-party libraries (e.g., ldap, ssl). Filter out
374 # those that point inside the build or source tree. Use sort to
375 # remove duplicates. Also record the -l flags necessary for static
376 # linking, but not those already covered by Requires.private.
377 echo 'Libs.private: $(sort $(filter-out -L.% -L$(top_srcdir)/%,$(filter -L%,$(LDFLAGS) $(SHLIB_LINK)))) $(filter-out $(PKG_CONFIG_REQUIRES_PRIVATE:lib%=-l%),$(filter -l%,$(SHLIB_LINK_INTERNAL:%_shlib=%) $(SHLIB_LINK)))' >>$@
384 .PHONY: install-lib install-lib-static install-lib-shared installdirs-lib
385 install-lib: install-lib-shared
387 install-lib: install-lib-static
388 install-lib: install-lib-pc
391 install-lib-pc: lib$(NAME).pc installdirs-lib
392 $(INSTALL_DATA) $< '$(DESTDIR)$(pkgconfigdir)/lib$(NAME).pc'
394 install-lib-static: $(stlib) installdirs-lib
395 $(INSTALL_STLIB) $< '$(DESTDIR)$(libdir)/$(stlib)'
397 install-lib-shared: $(shlib) installdirs-lib
399 # we don't install $(shlib) on AIX
400 # (see http://archives.postgresql.org/message-id/52EF20B2E3209443BC37736D00C3C1380A6E79FE@EXADV1.host.magwien.gv.at)
401 ifneq ($(PORTNAME), aix)
402 $(INSTALL_SHLIB) $< '$(DESTDIR)$(libdir)/$(shlib)'
403 ifneq ($(PORTNAME), cygwin)
404 ifneq ($(PORTNAME), win32)
405 ifneq ($(shlib), $(shlib_major))
406 cd '$(DESTDIR)$(libdir)' && \
407 rm -f $(shlib_major) && \
408 $(LN_S) $(shlib) $(shlib_major)
410 ifneq ($(shlib), $(shlib_bare))
411 cd '$(DESTDIR)$(libdir)' && \
412 rm -f $(shlib_bare) && \
413 $(LN_S) $(shlib) $(shlib_bare)
418 ifneq (,$(findstring $(PORTNAME),win32 cygwin))
419 $(INSTALL_SHLIB) $< '$(DESTDIR)$(bindir)/$(shlib)'
422 $(INSTALL_SHLIB) $< '$(DESTDIR)$(pkglibdir)/$(shlib)'
428 $(MKDIR_P) '$(DESTDIR)$(libdir)' '$(DESTDIR)$(pkgconfigdir)' $(if $(findstring $(PORTNAME),win32 cygwin),'$(DESTDIR)$(bindir)')
430 $(MKDIR_P) '$(DESTDIR)$(pkglibdir)'
438 .PHONY: uninstall-lib
441 rm -f '$(DESTDIR)$(libdir)/$(stlib)'
442 rm -f '$(DESTDIR)$(libdir)/$(shlib_bare)' \
443 '$(DESTDIR)$(libdir)/$(shlib_major)' \
444 '$(DESTDIR)$(libdir)/$(shlib)' $(if $(findstring $(PORTNAME),win32 cygwin),'$(DESTDIR)$(bindir)/$(shlib)') \
445 '$(DESTDIR)$(pkgconfigdir)/lib$(NAME).pc'
447 rm -f '$(DESTDIR)$(pkglibdir)/$(shlib)'
457 rm -f $(shlib) $(shlib_bare) $(shlib_major) $(stlib) $(exports_file) lib$(NAME).pc
458 ifneq (,$(DLL_DEFFILE))