1 # Copyright 2008, 2009, 2010 Dan Moulding, Alan T. DeKok
3 # This program is free software: you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation, either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # Add these rules only when LIBTOOL is being used.
19 # JLIBTOOL - check if we're using the local (fast) jlibtool, rather
20 # than the GNU (slow) libtool shell script. If so, add rules
23 ifeq "${LIBTOOL}" "JLIBTOOL"
24 JLIBTOOL := ${BUILD_DIR}/make/jlibtool
26 # Add a rule to build jlibtool BEFORE any other targets. This
27 # means that we can use it to build the later targets.
28 all install: ${JLIBTOOL}
30 # Note that we need to use a compilation rule that does NOT
31 # include referencing ${LIBTOOL}, as we don't have a jlibtool
33 jlibtool ${JLIBTOOL}: ${top_makedir}/jlibtool.c
34 @mkdir -p $(dir ${JLIBTOOL})
35 ${CC} $< -o ${JLIBTOOL}
39 .PHONY: jlibtool_clean
43 # Tell GNU Make to use this value, rather than anything specified
44 # on the command line.
45 override LIBTOOL := ${JLIBTOOL}
46 endif # else we're not using jlibtool
48 # When using libtool, it produces a '.libs' directory. Ensure that it
49 # is removed on "make clean", too.
55 @rm -rf ${BUILD_DIR}/.libs/
57 # Re-define compilers and linkers
60 COMPILE.c = ${LIBTOOL} --silent --mode=compile ${CC}
61 COMPILE.cxx = ${LIBTOOL} --mode=compile ${CXX}
62 LINK.c = ${LIBTOOL} --silent --mode=link ${CC}
63 LINK.cxx = ${LIBTOOL} --mode=link ${CXX}
64 PROGRAM_INSTALL = ${LIBTOOL} --silent --mode=install ${INSTALL}
67 # LIBTOOL_ENDINGS - Given a library ending in ".a" or ".so", replace that
68 # extension with ".la".
70 define LIBTOOL_ENDINGS
71 $(patsubst %.a,%.la,$(patsubst %.so,%.la,${1}))
74 # ADD_TARGET_RULE.la - Build a ".la" target.
78 define ADD_TARGET_RULE.la
79 # So "make ${1}" works
81 ${1}: $${${1}_BUILD}/${1}
83 # Create libtool library ${1}
84 $${${1}_BUILD}/${1}: $${${1}_OBJS} $${${1}_PREREQS}
85 @$(strip mkdir -p $(dir $${${1}_BUILD}/${1}))
86 @echo LINK $${${1}_BUILD}/${1}
87 @$${${1}_LINKER} -o $${${1}_BUILD}/${1} $${RPATH_FLAGS} $${LDFLAGS} \
88 $${${1}_LDFLAGS} $${${1}_OBJS} $${LDLIBS} $${${1}_LDLIBS}
93 # ADD_RELINK_RULE.exe - Parametric "function" that adds a rule to relink
94 # the target before installation, so that the paths are correct.
98 define ADD_RELINK_RULE.exe
99 ${1}: $${${1}_BUILD}/$${${1}_RELINK}
101 # used to fix up RPATH for ${1} on install.
102 $${${1}_BUILD}/$${${1}_RELINK}: $${${1}_OBJS} $${${1}_PRBIN} $${${1}_R_PRLIBS}
103 @$(strip mkdir -p $${${1}_BUILD}/${RELINK}/)
104 @$${${1}_LINKER} -o $${${1}_BUILD}/$${${1}_RELINK} $${RELINK_FLAGS} $${LDFLAGS} \
105 $${${1}_LDFLAGS} $${${1}_OBJS} $${${1}_R_PRLIBS} \
106 $${LDLIBS} $${${1}_LDLIBS}
110 # ADD_RELINK_RULE.la - Parametric "function" that adds a rule to relink
111 # the target before installation, so that the paths are correct.
115 define ADD_RELINK_RULE.la
116 ${1}: $${${1}_BUILD}/$${${1}_RELINK}
118 # used to fix up RPATH for ${1} on install.
119 $${${1}_BUILD}/$${${1}_RELINK}: $${${1}_OBJS} $${${1}_PREREQS}
120 @$(strip mkdir -p $${${1}_BUILD}/${RELINK}/)
121 @$${${1}_LINKER} -o $${${1}_BUILD}/$${${1}_RELINK} $${RELINK_FLAGS} $${LDFLAGS} \
122 $${${1}_LDFLAGS} $${${1}_OBJS} $${LDLIBS} $${${1}_LDLIBS}
127 # By default, if libdir is defined, we build shared libraries.
128 # However, we can disable shared libraries if explicitly told to.
130 ifneq "bm_shared_libs" "no"
131 bm_shared_libs := yes
135 # Default to building static libraries, too.
136 ifneq "${bm_static_libs}" "no"
137 bm_static_libs := yes
140 # Check if we build shared libraries.
141 ifeq "${bm_shared_libs}" "yes"
142 # RPATH : flags use to build executables that can be run
143 # from the build directory / source tree.
144 # RELINK : flags use to build executables that are installed,
145 # with no dependency on the source.
146 RPATH_FLAGS := -rpath $(abspath ${BUILD_DIR})/lib/.libs -rdynamic
147 RELINK_FLAGS := -rpath ${libdir} -rdynamic
150 ifneq "${bm_static_libs}" "yes"
151 RPATH_FLAGS += --shared
152 RELINK_FLAGS += --shared
155 ifneq "${bm_static_libs}" "yes"
156 $(error Building without static libraries requires you to set 'INSTALL' or 'libdir')
159 RPATH_FLAGS := -static
162 # UPDATE_TARGET_ENDINGS - Function to turn target into a libtool target
163 # e.g. "libfoo.a" -> libfoo.la"
165 # If the target is an executable, then its extension doesn't change
166 # when we use libtool, and we don't do any re-writing.
170 define ADD_LIBTOOL_SUFFIX
171 ifneq "$$(call LIBTOOL_ENDINGS,$${TGT})" "$${TGT}"
172 TGT_NOLIBTOOL := $${TGT}
173 TGT := $$(call LIBTOOL_ENDINGS,$${TGT})
174 $${TGT}_NOLIBTOOL := $${TGT_NOLIBTOOL}
177 ifneq "$${RELINK_FLAGS}" ""
178 $${TGT}_RELINK := ${RELINK}$${TGT}
181 # re-write all of the dependencies to have the libtool endings.
182 TGT_PREREQS := $$(call LIBTOOL_ENDINGS,$${TGT_PREREQS})
185 # ADD_LIBTOOL_TARGET - Function to ensure that the object files depend
186 # on our jlibtool target. This ensures that jlibtool is built before
187 # it's used to build the object files.
191 define ADD_LIBTOOL_TARGET
192 ifneq "${JLIBTOOL}" ""
193 $${$${TGT}_OBJS}: $${JLIBTOOL}
196 ifneq "$${$${TGT}_NOLIBTOOL}" ""
197 $$(notdir $${$${TGT}_NOLIBTOOL}): $${TGT}
200 # If we need to relink, add the relink targets now.
201 ifneq "$${$${TGT}_RELINK}" ""
202 # add rules to relink the target
204 $${TGT}_R_PRLIBS := $$(subst /lib/,/lib/relink/,$${$${TGT}_PRLIBS})
206 $$(eval $$(call ADD_RELINK_RULE$${$${TGT}_SUFFIX},$${TGT}))