mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-24 14:19:33 +08:00
108 lines
3.8 KiB
Makefile
108 lines
3.8 KiB
Makefile
#-----------------------------------------------------------------------------#
|
|
|
|
# Makefile.DLLs, version 0.4.
|
|
|
|
# Contributed by Fergus Henderson.
|
|
|
|
# This Makefile contains rules for creating DLLs on Windows using gnu-win32.
|
|
|
|
#-----------------------------------------------------------------------------#
|
|
|
|
# This rule creates a `.def' file, which lists the symbols that are exported
|
|
# from the DLL. We use `nm' to get a list of all the exported text (`T')
|
|
# symbols and data symbols -- including uninitialized data (`B'),
|
|
# initialized data (`D'), read-only data (`R'), and common blocks (`C').
|
|
%.def: %.a
|
|
echo EXPORTS > $@
|
|
nm $< | grep '^........ [BCDRT] _' | sed 's/[^_]*_//' >> $@
|
|
|
|
# We need to use macros to access global data:
|
|
# the user of the DLL must refer to `foo' as `(*__imp_foo)'.
|
|
# This rule creates a `_globals.h' file, which contains macros
|
|
# for doing this.
|
|
|
|
SYM_PREFIX = $(firstword $(SYM_PREFIX-$*) $*)
|
|
DLL_MACRO = $(SYM_PREFIX)_USE_DLL
|
|
IMP_MACRO = $(SYM_PREFIX)_IMP
|
|
GLOBAL_MACRO = $(SYM_PREFIX)_GLOBAL
|
|
|
|
%_globals.h: %.a
|
|
echo "/* automatically generated by Makefile.DLLs */" > $@
|
|
echo "#if defined(__GNUC__) && defined(_WIN32) \\" >> $@
|
|
echo " && defined($(DLL_MACRO))" >> $@
|
|
echo "# define $(IMP_MACRO)(name) __imp_##name" >> $@
|
|
echo "# define $(GLOBAL_MACRO)(name) (*$(IMP_MACRO)(name))" >> $@
|
|
echo "#else" >> $@
|
|
echo "# define $(GLOBAL_MACRO)(name) name" >> $@
|
|
echo "#endif" >> $@
|
|
echo "" >> $@
|
|
for sym in `nm $< | grep '^........ [BCDR] _' | sed 's/[^_]*_//'`; do \
|
|
echo "#define $$sym $(GLOBAL_MACRO)($$sym)" >> $@; \
|
|
done
|
|
|
|
# This rule creates the export object file (`foo.exp') which contains the
|
|
# jump table array; this export object file becomes part of the DLL.
|
|
# This rule also creates the import library (`foo_dll.a') which contains small
|
|
# stubs for all the functions exported by the DLL which jump to them via the
|
|
# jump table. Executables that will use the DLL must be linked against this
|
|
# stub library.
|
|
%.exp %_dll.a : %.def
|
|
dlltool $(DLLTOOLFLAGS) $(DLLTOOLFLAGS-$*) \
|
|
--def $< \
|
|
--dllname $*.dll \
|
|
--output-exp $*.exp \
|
|
--output-lib $*_dll.a
|
|
|
|
# The `sed' commands below are to convert DOS-style `C:\foo\bar'
|
|
# pathnames into Unix-style `//c/foo/bar' pathnames.
|
|
CYGWIN32_LIBS = $(shell echo \
|
|
-L`dirname \`gcc -print-file-name=libgcc.a | \
|
|
sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
|
|
-L`dirname \`gcc -print-file-name=libcygwin.a | \
|
|
sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
|
|
-L`dirname \`gcc -print-file-name=libkernel32.a | \
|
|
sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
|
|
-lgcc -lcygwin -lkernel32 -lgcc)
|
|
|
|
RELOCATABLE=yes
|
|
|
|
ifeq "$(strip $(RELOCATABLE))" "yes"
|
|
|
|
# to create relocatable DLLs, we need to do two passes
|
|
%.dll: %.exp %.a dll_fixup.o dll_init.o
|
|
$(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll -o $*.base \
|
|
-e _dll_entry@12 dll_init.o \
|
|
dll_fixup.o $*.exp $*.a \
|
|
$(LDLIBS) $(LDLIBS-$*) \
|
|
$(CYGWIN32_LIBS)
|
|
$(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll --base-file $*.base -o $@ \
|
|
-e _dll_entry@12 dll_init.o \
|
|
dll_fixup.o $*.exp $*.a \
|
|
$(LDLIBS) $(LDLIBS-$*) \
|
|
$(CYGWIN32_LIBS)
|
|
rm -f $*.base
|
|
else
|
|
|
|
%.dll: %.exp %.a dll_fixup.o dll_init.o
|
|
$(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll -o $@ \
|
|
-e _dll_entry@12 dll_init.o \
|
|
dll_fixup.o $*.exp $*.a \
|
|
$(LDLIBS) $(LDLIBS-$*) \
|
|
$(CYGWIN32_LIBS)
|
|
|
|
endif
|
|
|
|
# This black magic piece of assembler needs to be linked in in order to
|
|
# properly terminate the list of imported DLLs.
|
|
dll_fixup.s:
|
|
echo '.section .idata$$3' > dll_fixup.s
|
|
echo '.long 0,0,0,0, 0,0,0,0' >> dll_fixup.s
|
|
|
|
# This bit is necessary to provide an initialization function for the DLL.
|
|
dll_init.c:
|
|
echo '__attribute__((stdcall))' > dll_init.c
|
|
echo 'int dll_entry(int handle, int reason, void *ptr)' >> dll_init.c
|
|
echo '{return 1; }' >> dll_init.c
|
|
|
|
dont_throw_away: dll_fixup.o dll_init.o
|