#
# NAME Name of library to build (no suffix nor "lib" prefix)
# OBJS List of object files to include in library
-# SHLIB_LINK If shared library relies on other libraries,
-# additional stuff to put in its link command
+# SHLIB_LINK Stuff to append to library's link command
+# (typically, -L and -l switches for external libraries)
+# SHLIB_LINK_INTERNAL -L and -l switches for Postgres-supplied libraries
# SHLIB_PREREQS Order-only prerequisites for library build target
# SHLIB_EXPORTS (optional) Name of file containing list of symbols to
# export, in the format "function_name number"
#
+# Don't use SHLIB_LINK for references to files in the build tree, or the
+# wrong things will happen --- use SHLIB_LINK_INTERNAL for those!
+#
# When building a shared library, the following version information
# must also be set. It should be omitted when building a dynamically
# loadable module.
#
# Got that? Look at src/interfaces/libpq/Makefile for an example.
#
-# While the linker allows creation of most shared libraries,
-# -Bsymbolic requires resolution of all symbols, making the
-# compiler a better choice for shared library creation on ELF platforms.
-# With the linker, -Bsymbolic requires the crt1.o startup object file.
-# bjm 2001-02-10
COMPILER = $(CC) $(CFLAGS)
LINK.static = $(AR) $(AROPT)
+LDFLAGS_INTERNAL += $(SHLIB_LINK_INTERNAL)
+
ifdef SO_MAJOR_VERSION
# Try to keep the sections in some kind of order, folks...
override CFLAGS += $(CFLAGS_SL)
+override CXXFLAGS += $(CFLAGS_SL)
ifdef SO_MAJOR_VERSION
# libraries ought to use this to refer to versioned gettext domain names
override CPPFLAGS += -DSO_MAJOR_VERSION=$(SO_MAJOR_VERSION)
ifdef soname
LINK.shared += -Wl,-x,-soname,$(soname)
endif
+ BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
+ exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
+ ifneq (,$(exports_file))
+ LINK.shared += -Wl,--version-script=$(exports_file)
+ endif
SHLIB_LINK += -lc
else
LINK.shared = $(LD) -x -Bshareable -Bforcearchive
ifdef soname
LINK.shared += -Wl,-x,-soname,$(soname)
endif
+ BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
+ exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
+ ifneq (,$(exports_file))
+ LINK.shared += -Wl,--version-script=$(exports_file)
+ endif
else
ifdef SO_MAJOR_VERSION
shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
ifdef soname
LINK.shared += -Wl,-x,-soname,$(soname)
endif
+ BUILD.exports = ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
+ exports_file = $(SHLIB_EXPORTS:%.txt=%.list)
+ ifneq (,$(exports_file))
+ LINK.shared += -Wl,--version-script=$(exports_file)
+ endif
else
LINK.shared = $(LD) -x -Bshareable -Bforcearchive
endif
shlib = lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
endif
ifeq ($(with_gnu_ld), yes)
- LINK.shared = $(CC) -shared
+ LINK.shared = $(CC) -shared -Wl,-Bsymbolic
ifdef soname
LINK.shared += -Wl,-h -Wl,$(soname)
endif
else
- LINK.shared = $(LD) -b
+ LINK.shared = $(LD) -b -Bsymbolic
ifdef soname
LINK.shared += +h $(soname)
endif
ifeq ($(PORTNAME), solaris)
ifeq ($(GCC), yes)
- LINK.shared = $(COMPILER) -shared
+ LINK.shared = $(COMPILER) -shared -Wl,-Bsymbolic
else
- LINK.shared = $(COMPILER) -G
+ LINK.shared = $(COMPILER) -G -Bsymbolic
endif
ifdef soname
ifeq ($(with_gnu_ld), yes)
all-shared-lib: $(shlib)
+# In this rule, "touch $@" works around a problem on some platforms wherein
+# ranlib updates the library file's mod time with a value calculated to
+# seconds precision. If the filesystem has sub-second timestamps, this can
+# cause the library file to appear older than its input files, triggering
+# parallel-make problems.
ifndef haslibarule
$(stlib): $(OBJS) | $(SHLIB_PREREQS)
rm -f $@
$(LINK.static) $@ $^
$(RANLIB) $@
+ touch $@
endif #haslibarule
# AIX case
-# There is no correct way to write a rule that generates two files.
-# Rules with two targets don't have that meaning, they are merely
-# shorthand for two otherwise separate rules. To be safe for parallel
-# make, we must chain the dependencies like this. The semicolon is
-# important, otherwise make will choose some built-in rule.
-
-$(stlib): $(shlib) ;
+# See notes in src/backend/parser/Makefile about the following two rules
+$(stlib): $(shlib)
+ touch $@
$(shlib): $(OBJS) | $(SHLIB_PREREQS)
rm -f $(stlib)
# Cygwin case
$(shlib): $(OBJS) | $(SHLIB_PREREQS)
- $(CC) $(CFLAGS) -shared -o $@ $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) $(LDAP_LIBS_BE)
+ $(CC) $(CFLAGS) -shared -o $@ -Wl,--out-implib=$(stlib) $(OBJS) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK) $(LIBS) $(LDAP_LIBS_BE)
-$(stlib): $(OBJS) | $(SHLIB_PREREQS)
- rm -f $@
- $(LINK.static) $@ $^
- $(RANLIB) $@
+# see notes in src/backend/parser/Makefile about use of this type of rule
+$(stlib): $(shlib)
+ touch $@
else
# Win32 case
-# There is no correct way to write a rule that generates two files.
-# Rules with two targets don't have that meaning, they are merely
-# shorthand for two otherwise separate rules. To be safe for parallel
-# make, we must chain the dependencies like this. The semicolon is
-# important, otherwise make will choose some built-in rule.
-
-$(stlib): $(shlib) ;
+# See notes in src/backend/parser/Makefile about the following two rules
+$(stlib): $(shlib)
+ touch $@
# XXX A backend that loads a module linked with libgcc_s_dw2-1.dll will exit
# uncleanly, hence -static-libgcc. (Last verified with MinGW-w64 compilers
$(INSTALL_STLIB) $< '$(DESTDIR)$(libdir)/$(stlib)'
ifeq ($(PORTNAME), darwin)
cd '$(DESTDIR)$(libdir)' && \
- ranlib $(stlib)
+ $(RANLIB) $(stlib)
endif
install-lib-shared: $(shlib) installdirs-lib
projects / postgresql / blobdiff