## -*-makefile-*-
## Copyright (C) 2016 and later: Unicode, Inc. and others.
## License & terms of use: http://www.unicode.org/copyright.html
## Copyright (c) 2003-2015 IBM, Ken Foskey, and others. All rights reserved.
##
## Aix-specific setup (for gcc)
##
## Please note: AIX does NOT have library versioning per se (there is no 'SONAME' capability). 
## So, we are using 'windows' style library names, that is, libicuuc20.1.so instead of libicuuc.so.20.1

# When building stubdata, special considerations need to be made when building on AIX with GCC
BUILD_HOST_ICU=AIX_GCC

# Certain files don't compile in -ansi mode (e.g. umutex.c, toolutil.c, and cdatatst.c)
CFLAGS += -D_ALL_SOURCE

## Commands to generate dependency files
GEN_DEPS.c=	$(CC) -E -MM $(DEFS) $(CPPFLAGS)
GEN_DEPS.cc=	$(CXX) -E -MM $(DEFS) $(CPPFLAGS)

## Commands to link
## We need to use the C++ linker, even when linking C programs, since
##  our libraries contain C++ code (C++ static init not called)
LINK.c=		$(AIX_PREDELETE) $(CXX) $(CXXFLAGS) $(LDFLAGS) 
LINK.cc=	$(AIX_PREDELETE) $(CXX) $(CXXFLAGS) $(LDFLAGS) 

## Shared library options
LD_SOOPTIONS= -Wl,-bsymbolic

## Commands to make a shared library
SHLIB.c=    $(AIX_PREDELETE) $(CC) $(CFLAGS) $(LDFLAGS) -shared -Wl,-bexpall $(LD_SOOPTIONS)
SHLIB.cc=   $(AIX_PREDELETE) $(CXX) $(CXXFLAGS) $(LDFLAGS) -shared -Wl,-bexpall $(LD_SOOPTIONS)

## Compiler switch to embed a runtime search path
LD_RPATH=	-I
LD_RPATH_PRE=	

## enable the shared lib loader
LDFLAGS += -Wl,-bbigtoc

## These are the library specific LDFLAGS
LDFLAGSICUDT=-nodefaultlibs -nostdlib

## We need to delete things prior to linking, or else we'll get
## SEVERE ERROR: output file in use ..  on AIX. 
## But, shell script version should NOT delete target as we don't
## have $@ in that context.  (SH = only shell script, icu-config)
AIX_PREDELETE=rm -f $@ ; 
#SH# AIX_PREDELETE=

## Environment variable to set a runtime search path
LDLIBRARYPATH_ENVVAR = LIBPATH

## Override Versioned target for a shared library.
FINAL_SO_TARGET=  $(basename $(SO_TARGET))$(SO_TARGET_VERSION).$(SO)
MIDDLE_SO_TARGET= $(basename $(SO_TARGET))$(SO_TARGET_VERSION_MAJOR).$(SO)
SHARED_OBJECT = $(notdir $(FINAL_SO_TARGET:.$(SO)=.$(SOBJ)))
SHARED_OBJECT_NO_VERSION = $(basename $(SO_TARGET)).$(SOBJ)

# The following is for Makefile.inc's use.
ICULIBSUFFIX_VERSION = $(LIB_VERSION_MAJOR)

# this one is for icudefs.mk's use
ifeq ($(ENABLE_SHARED),YES)
SO_TARGET_VERSION_SUFFIX = $(SO_TARGET_VERSION_MAJOR)
endif

## Compiler switch to embed a library name. Not present on AIX.
LD_SONAME = 

## The type of assembly needed when pkgdata is used for generating shared libraries.
GENCCODE_ASSEMBLY=-a xlc

## Shared object suffix
SOBJ=   so
# without the -brtl option, the library names use .a. AIX is funny that way.
SO=	a
A=	a

## Non-shared intermediate object suffix
STATIC_O = o

## Special AIX rules

## Build archive from shared object
%.a : %.so
	ln -f $< $(SHARED_OBJECT_NO_VERSION)
	$(AR) $(ARFLAGS) $@ $(SHARED_OBJECT_NO_VERSION)
	rm -f $(SHARED_OBJECT_NO_VERSION)
$(LIBDIR)/%.a : %.so
	ln -f $< $(SHARED_OBJECT_NO_VERSION)
	$(AR) $(ARFLAGS) $@ $(SHARED_OBJECT_NO_VERSION)
	rm -f $(SHARED_OBJECT_NO_VERSION)

## Build import list from export list
%.e : %.exp
	@echo "Building an import list for $<"
	@$(SHELL) -ec "echo '#! $*.a($*.so)' | cat - $< > $@"

## Compilation rules
%.$(STATIC_O): $(srcdir)/%.c
	$(COMPILE.c) $(STATICCPPFLAGS) $(STATICCFLAGS) -o $@ $<
%.o: $(srcdir)/%.c
	$(COMPILE.c) $(DYNAMICCPPFLAGS) $(DYNAMICCFLAGS) -o $@ $<

%.$(STATIC_O): $(srcdir)/%.cpp
	$(COMPILE.cc) $(STATICCPPFLAGS) $(STATICCXXFLAGS) -o $@ $<
%.o: $(srcdir)/%.cpp
	$(COMPILE.cc) $(DYNAMICCPPFLAGS) $(DYNAMICCXXFLAGS) -o $@ $<


## Dependency rules
%.d: $(srcdir)/%.c
	@echo "generating dependency information for $<"
	@$(SHELL) -ec '$(GEN_DEPS.c) $< \
		| sed '\''s%\($*\)\.o[ :]*%\1.o $@ : %g'\'' > $@; \
		[ -s $@ ] || rm -f $@'

%.d: $(srcdir)/%.cpp
	@echo "generating dependency information for $<"
	@$(SHELL) -ec '$(GEN_DEPS.cc) $< \
		| sed '\''s%\($*\)\.o[ :]*%\1.o $@ : %g'\'' > $@; \
		[ -s $@ ] || rm -f $@'

## Versioned libraries rules
%$(SO_TARGET_VERSION_MAJOR).$(SO): %$(SO_TARGET_VERSION).$(SO)
	$(RM) $@ && ln -s ${*F}$(SO_TARGET_VERSION).$(SO) $@
%.$(SO): %$(SO_TARGET_VERSION).$(SO)
	$(RM) $@ && ln -s ${*F}$(SO_TARGET_VERSION).$(SO) $@


## BIR  - bind with internal references [so app data and icu data doesn't collide]
# LDflags that pkgdata will use
BIR_LDFLAGS= -Wl,-bE:$(NAME).map,-bnoexpall

# Dependencies [i.e. map files] for the final library
BIR_DEPS= $(NAME).map

