| 1 | #-----------------------------------------------------------------------------#
|
|---|
| 2 |
|
|---|
| 3 | # Makefile.DLLs, version 0.4.
|
|---|
| 4 |
|
|---|
| 5 | # Contributed by Fergus Henderson.
|
|---|
| 6 |
|
|---|
| 7 | # This Makefile contains rules for creating DLLs on Windows using gnu-win32.
|
|---|
| 8 |
|
|---|
| 9 | #-----------------------------------------------------------------------------#
|
|---|
| 10 |
|
|---|
| 11 | # This rule creates a `.def' file, which lists the symbols that are exported
|
|---|
| 12 | # from the DLL. We use `nm' to get a list of all the exported text (`T')
|
|---|
| 13 | # symbols and data symbols -- including uninitialized data (`B'),
|
|---|
| 14 | # initialized data (`D'), read-only data (`R'), and common blocks (`C').
|
|---|
| 15 | %.def: %.a
|
|---|
| 16 | echo EXPORTS > $@
|
|---|
| 17 | nm $< | grep '^........ [BCDRT] _' | sed 's/[^_]*_//' >> $@
|
|---|
| 18 |
|
|---|
| 19 | # We need to use macros to access global data:
|
|---|
| 20 | # the user of the DLL must refer to `foo' as `(*__imp_foo)'.
|
|---|
| 21 | # This rule creates a `_globals.h' file, which contains macros
|
|---|
| 22 | # for doing this.
|
|---|
| 23 |
|
|---|
| 24 | SYM_PREFIX = $(firstword $(SYM_PREFIX-$*) $*)
|
|---|
| 25 | DLL_MACRO = $(SYM_PREFIX)_USE_DLL
|
|---|
| 26 | IMP_MACRO = $(SYM_PREFIX)_IMP
|
|---|
| 27 | GLOBAL_MACRO = $(SYM_PREFIX)_GLOBAL
|
|---|
| 28 |
|
|---|
| 29 | %_globals.h: %.a
|
|---|
| 30 | echo "/* automatically generated by Makefile.DLLs */" > $@
|
|---|
| 31 | echo "#if defined(__GNUC__) && defined(_WIN32) \\" >> $@
|
|---|
| 32 | echo " && defined($(DLL_MACRO))" >> $@
|
|---|
| 33 | echo "# define $(IMP_MACRO)(name) __imp_##name" >> $@
|
|---|
| 34 | echo "# define $(GLOBAL_MACRO)(name) (*$(IMP_MACRO)(name))" >> $@
|
|---|
| 35 | echo "#else" >> $@
|
|---|
| 36 | echo "# define $(GLOBAL_MACRO)(name) name" >> $@
|
|---|
| 37 | echo "#endif" >> $@
|
|---|
| 38 | echo "" >> $@
|
|---|
| 39 | for sym in `nm $< | grep '^........ [BCDR] _' | sed 's/[^_]*_//'`; do \
|
|---|
| 40 | echo "#define $$sym $(GLOBAL_MACRO)($$sym)" >> $@; \
|
|---|
| 41 | done
|
|---|
| 42 |
|
|---|
| 43 | # This rule creates the export object file (`foo.exp') which contains the
|
|---|
| 44 | # jump table array; this export object file becomes part of the DLL.
|
|---|
| 45 | # This rule also creates the import library (`foo_dll.a') which contains small
|
|---|
| 46 | # stubs for all the functions exported by the DLL which jump to them via the
|
|---|
| 47 | # jump table. Executables that will use the DLL must be linked against this
|
|---|
| 48 | # stub library.
|
|---|
| 49 | %.exp %_dll.a : %.def
|
|---|
| 50 | dlltool $(DLLTOOLFLAGS) $(DLLTOOLFLAGS-$*) \
|
|---|
| 51 | --def $< \
|
|---|
| 52 | --dllname $*.dll \
|
|---|
| 53 | --output-exp $*.exp \
|
|---|
| 54 | --output-lib $*_dll.a
|
|---|
| 55 |
|
|---|
| 56 | # The `sed' commands below are to convert DOS-style `C:\foo\bar'
|
|---|
| 57 | # pathnames into Unix-style `//c/foo/bar' pathnames.
|
|---|
| 58 | CYGWIN32_LIBS = $(shell echo \
|
|---|
| 59 | -L`dirname \`gcc -print-file-name=libgcc.a | \
|
|---|
| 60 | sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
|
|---|
| 61 | -L`dirname \`gcc -print-file-name=libcygwin.a | \
|
|---|
| 62 | sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
|
|---|
| 63 | -L`dirname \`gcc -print-file-name=libkernel32.a | \
|
|---|
| 64 | sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
|
|---|
| 65 | -lgcc -lcygwin -lkernel32 -lgcc)
|
|---|
| 66 |
|
|---|
| 67 | RELOCATABLE=yes
|
|---|
| 68 |
|
|---|
| 69 | ifeq "$(strip $(RELOCATABLE))" "yes"
|
|---|
| 70 |
|
|---|
| 71 | # to create relocatable DLLs, we need to do two passes
|
|---|
| 72 | %.dll: %.exp %.a dll_fixup.o dll_init.o
|
|---|
| 73 | $(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll -o $*.base \
|
|---|
| 74 | -e _dll_entry@12 dll_init.o \
|
|---|
| 75 | dll_fixup.o $*.exp $*.a \
|
|---|
| 76 | $(LDLIBS) $(LDLIBS-$*) \
|
|---|
| 77 | $(CYGWIN32_LIBS)
|
|---|
| 78 | $(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll --base-file $*.base -o $@ \
|
|---|
| 79 | -e _dll_entry@12 dll_init.o \
|
|---|
| 80 | dll_fixup.o $*.exp $*.a \
|
|---|
| 81 | $(LDLIBS) $(LDLIBS-$*) \
|
|---|
| 82 | $(CYGWIN32_LIBS)
|
|---|
| 83 | rm -f $*.base
|
|---|
| 84 | else
|
|---|
| 85 |
|
|---|
| 86 | %.dll: %.exp %.a dll_fixup.o dll_init.o
|
|---|
| 87 | $(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll -o $@ \
|
|---|
| 88 | -e _dll_entry@12 dll_init.o \
|
|---|
| 89 | dll_fixup.o $*.exp $*.a \
|
|---|
| 90 | $(LDLIBS) $(LDLIBS-$*) \
|
|---|
| 91 | $(CYGWIN32_LIBS)
|
|---|
| 92 |
|
|---|
| 93 | endif
|
|---|
| 94 |
|
|---|
| 95 | # This black magic piece of assembler needs to be linked in in order to
|
|---|
| 96 | # properly terminate the list of imported DLLs.
|
|---|
| 97 | dll_fixup.s:
|
|---|
| 98 | echo '.section .idata$$3' > dll_fixup.s
|
|---|
| 99 | echo '.long 0,0,0,0, 0,0,0,0' >> dll_fixup.s
|
|---|
| 100 |
|
|---|
| 101 | # This bit is necessary to provide an initialization function for the DLL.
|
|---|
| 102 | dll_init.c:
|
|---|
| 103 | echo '__attribute__((stdcall))' > dll_init.c
|
|---|
| 104 | echo 'int dll_entry(int handle, int reason, void *ptr)' >> dll_init.c
|
|---|
| 105 | echo '{return 1; }' >> dll_init.c
|
|---|
| 106 |
|
|---|
| 107 | dont_throw_away: dll_fixup.o dll_init.o
|
|---|
