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In at least Apple's version of ranlib, the output file is updated to have a mod time equal to the max of the timestamps of its components, and that data only has seconds precision. On a filesystem with sub-second file timestamp precision --- say, APFS --- this can result in the finished static library appearing older than its input files, which causes useless rebuilds and possible outright failures in parallel makes. We've only seen this reported in the field from people using Apple's ranlib with a non-Apple make, because Apple's make doesn't know about sub-second timestamps either so it doesn't decide rebuilds are needed. But Apple's ranlib presumably shares code with at least some BSDen, so it's not that unlikely that the same problem could arise elsewhere. To fix, just "touch" the output file after ranlib finishes. We seem to need this in only one place. There are other calls of ranlib in our makefiles, but they are working on intermediate files whose timestamps are not actually important, or else on an installed static library for which sub-second timestamp precision is unlikely to matter either. (Also, so far as I can tell, Apple's ranlib doesn't mess up the file timestamp in the latter usage anyhow.) In passing, change "ranlib" to "$(RANLIB)" in one place that was bypassing the make macro for no good reason. Per bug #15525 from Jack Kelly (via Alyssa Ross). Back-patch to all supported branches. Discussion: https://postgr.es/m/15525-a30da084f17a1faa@postgresql.org
529 lines
16 KiB
Makefile
529 lines
16 KiB
Makefile
#-------------------------------------------------------------------------
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#
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# Makefile.shlib
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# Common rules for building shared libraries
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#
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# Copyright (c) 1998, Regents of the University of California
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#
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# IDENTIFICATION
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# src/Makefile.shlib
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#
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#-------------------------------------------------------------------------
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# This file should be included by any Postgres module Makefile that
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# wants to build a shared library (if possible for the current
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# platform). A static library is also built from the same object
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# files. Only one library can be built per makefile.
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#
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# Before including this file, the module Makefile must define these
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# variables:
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#
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# NAME Name of library to build (no suffix nor "lib" prefix)
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# OBJS List of object files to include in library
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# SHLIB_LINK Stuff to append to library's link command
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# (typically, -L and -l switches for external libraries)
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# SHLIB_LINK_INTERNAL -L and -l switches for Postgres-supplied libraries
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# SHLIB_PREREQS Order-only prerequisites for library build target
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# SHLIB_EXPORTS (optional) Name of file containing list of symbols to
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# export, in the format "function_name number"
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#
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# Don't use SHLIB_LINK for references to files in the build tree, or the
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# wrong things will happen --- use SHLIB_LINK_INTERNAL for those!
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#
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# When building a shared library, the following version information
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# must also be set. It should be omitted when building a dynamically
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# loadable module.
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#
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# SO_MAJOR_VERSION Major version number to use for shared library
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# SO_MINOR_VERSION Minor version number to use for shared library
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# (If you want a patchlevel, include it in SO_MINOR_VERSION, e.g., "6.2".)
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#
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# The module Makefile must also include
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# $(top_builddir)/src/Makefile.global before including this file.
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# (Makefile.global sets PORTNAME and other needed symbols.)
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#
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# This makefile provides the following (phony) targets:
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#
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# all-lib build the static and shared (if applicable) libraries
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# install-lib install the libraries into $(libdir)
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# installdirs-lib create installation directory $(libdir)
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# uninstall-lib remove the libraries from $(libdir)
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# clean-lib delete the static and shared libraries from the build dir
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# maintainer-clean-lib delete .def files built for win32
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#
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# Typically you would add `all-lib' to the `all' target so that `make all'
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# builds the libraries. In the most simple case it would look like this:
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#
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# all: all-lib
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#
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# Similarly, the install rule might look like
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#
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# install: install-lib
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#
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# plus any additional things you want to install. Et cetera.
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#
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# Got that? Look at src/interfaces/libpq/Makefile for an example.
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#
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COMPILER = $(CC) $(CFLAGS)
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LINK.static = $(AR) $(AROPT)
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LDFLAGS_INTERNAL += $(SHLIB_LINK_INTERNAL)
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ifdef SO_MAJOR_VERSION
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# Default library naming convention used by the majority of platforms
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shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
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shlib_major = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
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shlib_bare = lib$(NAME)$(DLSUFFIX)
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# Testing the soname variable is a reliable way to determine whether a
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# linkable library is being built.
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soname = $(shlib_major)
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pkgconfigdir = $(libdir)/pkgconfig
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else
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# Naming convention for dynamically loadable modules
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shlib = $(NAME)$(DLSUFFIX)
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endif
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stlib = lib$(NAME).a
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ifndef soname
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# additional flags for backend modules
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SHLIB_LINK += $(BE_DLLLIBS)
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endif
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# For each platform we support shared libraries on, set shlib to the
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# name of the library (if default above is not right), set
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# LINK.shared to the command to link the library,
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# and adjust SHLIB_LINK if necessary.
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# Try to keep the sections in some kind of order, folks...
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override CFLAGS += $(CFLAGS_SL)
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override CXXFLAGS += $(CFLAGS_SL)
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ifdef SO_MAJOR_VERSION
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# libraries ought to use this to refer to versioned gettext domain names
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override CPPFLAGS += -DSO_MAJOR_VERSION=$(SO_MAJOR_VERSION)
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endif
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ifeq ($(PORTNAME), aix)
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ifdef SO_MAJOR_VERSION
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shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
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endif
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haslibarule = yes
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# $(exports_file) is also usable as an import file
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exports_file = lib$(NAME).exp
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endif
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ifeq ($(PORTNAME), darwin)
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ifdef soname
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# linkable library
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DLSUFFIX = .dylib
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ifneq ($(SO_MAJOR_VERSION), 0)
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version_link = -compatibility_version $(SO_MAJOR_VERSION) -current_version $(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
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endif
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LINK.shared = $(COMPILER) -dynamiclib -install_name '$(libdir)/lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)' $(version_link) $(exported_symbols_list) -multiply_defined suppress
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shlib = lib$(NAME).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)$(DLSUFFIX)
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shlib_major = lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)
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else
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# loadable module
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DLSUFFIX = .so
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LINK.shared = $(COMPILER) -bundle -multiply_defined suppress
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endif
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BUILD.exports = $(AWK) '/^[^\#]/ {printf "_%s\n",$$1}' $< >$@
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exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
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ifneq (,$(exports_file))
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exported_symbols_list = -exported_symbols_list $(exports_file)
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endif
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endif
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ifeq ($(PORTNAME), openbsd)
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ifdef ELF_SYSTEM
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LINK.shared = $(COMPILER) -shared
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ifdef soname
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LINK.shared += -Wl,-x,-soname,$(soname)
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endif
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BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
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exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
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ifneq (,$(exports_file))
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LINK.shared += -Wl,--version-script=$(exports_file)
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endif
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SHLIB_LINK += -lc
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else
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LINK.shared = $(LD) -x -Bshareable -Bforcearchive
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endif
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endif
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ifeq ($(PORTNAME), freebsd)
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ifdef ELF_SYSTEM
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ifdef SO_MAJOR_VERSION
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shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
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endif
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LINK.shared = $(COMPILER) -shared
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ifdef soname
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LINK.shared += -Wl,-x,-soname,$(soname)
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endif
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BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
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exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
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ifneq (,$(exports_file))
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LINK.shared += -Wl,--version-script=$(exports_file)
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endif
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else
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ifdef SO_MAJOR_VERSION
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shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
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endif
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LINK.shared = $(LD) -x -Bshareable -Bforcearchive
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endif
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endif
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ifeq ($(PORTNAME), netbsd)
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ifdef ELF_SYSTEM
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LINK.shared = $(COMPILER) -shared
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ifdef soname
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LINK.shared += -Wl,-x,-soname,$(soname)
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endif
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BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
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exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
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ifneq (,$(exports_file))
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LINK.shared += -Wl,--version-script=$(exports_file)
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endif
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else
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LINK.shared = $(LD) -x -Bshareable -Bforcearchive
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endif
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endif
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ifeq ($(PORTNAME), hpux)
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ifdef SO_MAJOR_VERSION
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shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
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endif
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ifeq ($(with_gnu_ld), yes)
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LINK.shared = $(CC) -shared -Wl,-Bsymbolic
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ifdef soname
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LINK.shared += -Wl,-h -Wl,$(soname)
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endif
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else
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LINK.shared = $(LD) -b -Bsymbolic
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ifdef soname
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LINK.shared += +h $(soname)
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endif
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# can't use the CC-syntax rpath pattern here, so instead:
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rpath =
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ifeq ($(enable_rpath), yes)
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LINK.shared += +s +b '$(rpathdir)'
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endif
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# On HPUX platforms, gcc is usually configured to search for libraries
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# in /usr/local/lib, but ld won't do so. Add an explicit -L switch so
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# ld can find the same libraries gcc does. Make sure it goes after any
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# -L switches provided explicitly.
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ifeq ($(GCC), yes)
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SHLIB_LINK += -L/usr/local/lib
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endif
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endif
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# And we need to link with libgcc, too
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ifeq ($(GCC), yes)
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SHLIB_LINK += `$(CC) $(LDFLAGS) -print-libgcc-file-name`
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endif
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endif
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ifeq ($(PORTNAME), linux)
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LINK.shared = $(COMPILER) -shared
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ifdef soname
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LINK.shared += -Wl,-soname,$(soname)
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endif
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BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
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exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
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ifneq (,$(exports_file))
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LINK.shared += -Wl,--version-script=$(exports_file)
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endif
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endif
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ifeq ($(PORTNAME), solaris)
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ifeq ($(GCC), yes)
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LINK.shared = $(COMPILER) -shared -Wl,-Bsymbolic
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else
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LINK.shared = $(COMPILER) -G -Bsymbolic
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endif
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ifdef soname
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ifeq ($(with_gnu_ld), yes)
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LINK.shared += -Wl,-soname,$(soname)
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else
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LINK.shared += -h $(soname)
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endif
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endif
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endif
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ifeq ($(PORTNAME), cygwin)
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LINK.shared = $(CC) -shared
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ifdef SO_MAJOR_VERSION
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shlib = cyg$(NAME)$(DLSUFFIX)
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endif
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haslibarule = yes
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endif
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ifeq ($(PORTNAME), win32)
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ifdef SO_MAJOR_VERSION
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shlib = lib$(NAME)$(DLSUFFIX)
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endif
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haslibarule = yes
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endif
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##
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## BUILD
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##
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.PHONY: all-lib all-static-lib all-shared-lib
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all-lib: all-shared-lib
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ifdef soname
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# no static library when building a dynamically loadable module
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all-lib: all-static-lib
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all-lib: lib$(NAME).pc
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endif
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all-static-lib: $(stlib)
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all-shared-lib: $(shlib)
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# In this rule, "touch $@" works around a problem on some platforms wherein
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# ranlib updates the library file's mod time with a value calculated to
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# seconds precision. If the filesystem has sub-second timestamps, this can
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# cause the library file to appear older than its input files, triggering
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# parallel-make problems.
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ifndef haslibarule
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$(stlib): $(OBJS) | $(SHLIB_PREREQS)
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rm -f $@
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$(LINK.static) $@ $^
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$(RANLIB) $@
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touch $@
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endif #haslibarule
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ifeq (,$(filter cygwin win32,$(PORTNAME)))
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ifneq ($(PORTNAME), aix)
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# Normal case
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$(shlib): $(OBJS) | $(SHLIB_PREREQS)
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$(LINK.shared) -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK)
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ifdef shlib_major
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# If we're using major and minor versions, then make a symlink to major-version-only.
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ifneq ($(shlib), $(shlib_major))
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rm -f $(shlib_major)
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$(LN_S) $(shlib) $(shlib_major)
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endif
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# Make sure we have a link to a name without any version numbers
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ifneq ($(shlib), $(shlib_bare))
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rm -f $(shlib_bare)
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$(LN_S) $(shlib) $(shlib_bare)
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endif
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endif # shlib_major
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# Where possible, restrict the symbols exported by the library to just the
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# official list, so as to avoid unintentional ABI changes. On recent macOS
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# this also quiets multiply-defined-symbol warnings in programs that use
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# libpgport along with libpq.
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ifneq (,$(SHLIB_EXPORTS))
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ifdef BUILD.exports
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$(shlib): $(SHLIB_EXPORTS:%.txt=%.list)
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$(SHLIB_EXPORTS:%.txt=%.list): %.list: %.txt
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$(BUILD.exports)
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endif
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endif
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else # PORTNAME == aix
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# AIX case
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# See notes in src/backend/parser/Makefile about the following two rules
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$(stlib): $(shlib)
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touch $@
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$(shlib): $(OBJS) | $(SHLIB_PREREQS)
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rm -f $(stlib)
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$(LINK.static) $(stlib) $^
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$(RANLIB) $(stlib)
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$(MKLDEXPORT) $(stlib) $(shlib) >$(exports_file)
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$(COMPILER) -o $(shlib) $(stlib) -Wl,-bE:$(exports_file) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK)
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rm -f $(stlib)
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$(AR) $(AROPT) $(stlib) $(shlib)
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endif # PORTNAME == aix
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else # PORTNAME == cygwin || PORTNAME == win32
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ifeq ($(PORTNAME), cygwin)
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# Cygwin case
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$(shlib): $(OBJS) | $(SHLIB_PREREQS)
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$(CC) $(CFLAGS) -shared -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) $(LDAP_LIBS_BE)
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$(stlib): $(OBJS) | $(SHLIB_PREREQS)
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rm -f $@
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$(LINK.static) $@ $^
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$(RANLIB) $@
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else
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# Win32 case
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# See notes in src/backend/parser/Makefile about the following two rules
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$(stlib): $(shlib)
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touch $@
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# XXX A backend that loads a module linked with libgcc_s_dw2-1.dll will exit
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# uncleanly, hence -static-libgcc. (Last verified with MinGW-w64 compilers
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# from i686-4.9.1-release-win32-dwarf-rt_v3-rev1.) Shared libgcc has better
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# support for C++/Java exceptions; while core PostgreSQL does not use them, it
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# would be nice to support shared libgcc for the benefit of extensions.
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#
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# If SHLIB_EXPORTS is set, the rules below will build a .def file from that.
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# Else we just use --export-all-symbols.
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ifeq (,$(SHLIB_EXPORTS))
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$(shlib): $(OBJS) | $(SHLIB_PREREQS)
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$(CC) $(CFLAGS) -shared -static-libgcc -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) -Wl,--export-all-symbols -Wl,--out-implib=$(stlib)
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else
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DLL_DEFFILE = lib$(NAME)dll.def
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$(shlib): $(OBJS) $(DLL_DEFFILE) | $(SHLIB_PREREQS)
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$(CC) $(CFLAGS) -shared -static-libgcc -o $@ $(OBJS) $(DLL_DEFFILE) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) -Wl,--out-implib=$(stlib)
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endif
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endif # PORTNAME == cygwin
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endif # PORTNAME == cygwin || PORTNAME == win32
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%.pc: $(MAKEFILE_LIST)
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echo 'Name: lib$(NAME)' >$@
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echo 'Description: PostgreSQL lib$(NAME) library' >>$@
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echo 'Url: http://www.postgresql.org/' >>$@
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echo 'Version: $(VERSION)' >>$@
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echo 'Requires: ' >>$@
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echo 'Requires.private: $(PKG_CONFIG_REQUIRES_PRIVATE)' >>$@
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echo 'Cflags: -I$(includedir)' >>$@
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echo 'Libs: -L$(libdir) -l$(NAME)' >>$@
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# Record -L flags that the user might have passed in to the PostgreSQL
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# build to locate third-party libraries (e.g., ldap, ssl). Filter out
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# those that point inside the build or source tree. Use sort to
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# remove duplicates. Also record the -l flags necessary for static
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# linking, but not those already covered by Requires.private.
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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%,$(SHLIB_LINK)))' >>$@
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# We need several not-quite-identical variants of .DEF files to build
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# DLLs for Windows. These are made from the single source file
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# exports.txt. Since we can't assume that Windows boxes will have
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# sed, the .DEF files are always built and included in distribution
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# tarballs.
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ifneq (,$(SHLIB_EXPORTS))
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distprep: lib$(NAME)dll.def lib$(NAME)ddll.def
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UC_NAME = $(shell echo $(NAME) | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')
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lib$(NAME)dll.def: $(SHLIB_EXPORTS)
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echo '; DEF file for Makefile.shlib (MinGW)' >$@
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echo 'LIBRARY LIB$(UC_NAME).dll' >>$@
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echo 'EXPORTS' >>$@
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sed -e '/^#/d' -e 's/^\(.*[ ]\)\([0-9][0-9]*\)/ \1@ \2/' $< >>$@
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lib$(NAME)ddll.def: $(SHLIB_EXPORTS)
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echo '; DEF file for Makefile.shlib (MinGW)' >$@
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echo 'LIBRARY LIB$(UC_NAME)D.dll' >>$@
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echo 'EXPORTS' >>$@
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sed -e '/^#/d' -e 's/^\(.*[ ]\)\([0-9][0-9]*\)/ \1@ \2/' $< >>$@
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endif # SHLIB_EXPORTS
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##
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## INSTALL
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##
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.PHONY: install-lib install-lib-static install-lib-shared installdirs-lib
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install-lib: install-lib-shared
|
|
ifdef soname
|
|
install-lib: install-lib-static
|
|
install-lib: install-lib-pc
|
|
endif
|
|
|
|
install-lib-pc: lib$(NAME).pc installdirs-lib
|
|
$(INSTALL_DATA) $< '$(DESTDIR)$(pkgconfigdir)/lib$(NAME).pc'
|
|
|
|
install-lib-static: $(stlib) installdirs-lib
|
|
$(INSTALL_STLIB) $< '$(DESTDIR)$(libdir)/$(stlib)'
|
|
ifeq ($(PORTNAME), darwin)
|
|
cd '$(DESTDIR)$(libdir)' && \
|
|
$(RANLIB) $(stlib)
|
|
endif
|
|
|
|
install-lib-shared: $(shlib) installdirs-lib
|
|
ifdef soname
|
|
# we don't install $(shlib) on AIX
|
|
# (see http://archives.postgresql.org/message-id/52EF20B2E3209443BC37736D00C3C1380A6E79FE@EXADV1.host.magwien.gv.at)
|
|
ifneq ($(PORTNAME), aix)
|
|
$(INSTALL_SHLIB) $< '$(DESTDIR)$(libdir)/$(shlib)'
|
|
ifneq ($(PORTNAME), cygwin)
|
|
ifneq ($(PORTNAME), win32)
|
|
ifneq ($(shlib), $(shlib_major))
|
|
cd '$(DESTDIR)$(libdir)' && \
|
|
rm -f $(shlib_major) && \
|
|
$(LN_S) $(shlib) $(shlib_major)
|
|
endif
|
|
ifneq ($(shlib), $(shlib_bare))
|
|
cd '$(DESTDIR)$(libdir)' && \
|
|
rm -f $(shlib_bare) && \
|
|
$(LN_S) $(shlib) $(shlib_bare)
|
|
endif
|
|
endif # not win32
|
|
endif # not cygwin
|
|
endif # not aix
|
|
ifneq (,$(findstring $(PORTNAME),win32 cygwin))
|
|
$(INSTALL_SHLIB) $< '$(DESTDIR)$(bindir)/$(shlib)'
|
|
endif
|
|
else # no soname
|
|
$(INSTALL_SHLIB) $< '$(DESTDIR)$(pkglibdir)/$(shlib)'
|
|
endif
|
|
|
|
|
|
installdirs-lib:
|
|
ifdef soname
|
|
$(MKDIR_P) '$(DESTDIR)$(libdir)' '$(DESTDIR)$(pkgconfigdir)' $(if $(findstring $(PORTNAME),win32 cygwin),'$(DESTDIR)$(bindir)')
|
|
else
|
|
$(MKDIR_P) '$(DESTDIR)$(pkglibdir)'
|
|
endif
|
|
|
|
|
|
##
|
|
## UNINSTALL
|
|
##
|
|
|
|
.PHONY: uninstall-lib
|
|
uninstall-lib:
|
|
ifdef soname
|
|
rm -f '$(DESTDIR)$(libdir)/$(stlib)'
|
|
rm -f '$(DESTDIR)$(libdir)/$(shlib_bare)' \
|
|
'$(DESTDIR)$(libdir)/$(shlib_major)' \
|
|
'$(DESTDIR)$(libdir)/$(shlib)' $(if $(findstring $(PORTNAME),win32 cygwin),'$(DESTDIR)$(bindir)/$(shlib)') \
|
|
'$(DESTDIR)$(pkgconfigdir)/lib$(NAME).pc'
|
|
else # no soname
|
|
rm -f '$(DESTDIR)$(pkglibdir)/$(shlib)'
|
|
endif # no soname
|
|
|
|
|
|
##
|
|
## CLEAN
|
|
##
|
|
|
|
.PHONY: clean-lib
|
|
clean-lib:
|
|
rm -f $(shlib) $(shlib_bare) $(shlib_major) $(stlib) $(exports_file) lib$(NAME).pc
|
|
|
|
ifneq (,$(SHLIB_EXPORTS))
|
|
maintainer-clean-lib:
|
|
rm -f lib$(NAME)dll.def lib$(NAME)ddll.def
|
|
endif
|