diff options
| -rw-r--r-- | Makefile | 18 | ||||
| -rw-r--r-- | README.md | 29 |
2 files changed, 24 insertions, 23 deletions
@@ -1,12 +1,7 @@ # Build ghdl module for yosys -# Prefix where ghdl has been installed -GHDL_PREFIX= - -# GHDL_PREFIX must be defined. -ifeq ($(GHDL_PREFIX),) -$(error GHDL_PREFIX not defined) -endif +# Name or path to the ghdl executable. +GHDL=ghdl YOSYS_CONFIG=yosys-config SOEXT=so @@ -14,16 +9,19 @@ SOEXT=so LDFLAGS= CFLAGS=-O -ALL_LDFLAGS=$(GHDL_PREFIX)/lib/libghdl-*.so -Wl,-rpath,$(GHDL_PREFIX)/lib $(LDFLAGS) +LIBGHDL_LIB:=$(shell $(GHDL) --libghdl-library-path) +LIBGHDL_INC:=$(shell $(GHDL) --libghdl-include-dir) + +ALL_LDFLAGS=$(LIBGHDL_LIB) -Wl,-rpath,$(dir $(LIBGHDL_LIB)) $(LDFLAGS) -ALL_CFLAGS=-fPIC -DYOSYS_ENABLE_GHDL -I$(GHDL_PREFIX)/include $(CFLAGS) +ALL_CFLAGS=-fPIC -DYOSYS_ENABLE_GHDL -I$(LIBGHDL_INC) $(CFLAGS) COMPILE=$(YOSYS_CONFIG) --exec --cxx all: ghdl.$(SOEXT) ghdl.$(SOEXT): ghdl.o - $(COMPILE) -o $@ -shared $< -shared $(ALL_LDFLAGS) --ldflags --ldlibs + $(COMPILE) -o $@ -shared $< $(ALL_LDFLAGS) --ldflags --ldlibs ghdl.o: ghdl/ghdl.cc $(COMPILE) -c --cxxflags -o $@ $< $(ALL_CFLAGS) @@ -1,7 +1,7 @@ # ghdlsynth-beta VHDL synthesis (based on ghdl) -This is awfully experimental and work in progress! +This is experimental and work in progress! TODO: Explain purpose of program. @@ -24,16 +24,25 @@ Get the latest version of GNAT: $ sudo apt-get install gnat-8 ``` -From ghdl, build and install `libghdlsynth.so`. You may need sudo permission. +Configure ghdl using at least `--enable-libghdl` and `--enable-synth`. +Build and install. ```sh -$ make libghdlsynth.so -$ make install.libghdlsynth.shared +$ ./configure --enable-libghdl --enable-synth +$ make +$ make install ``` From ghdlsynth-beta: ```sh -make GHDL_PREFIX=/usr/local/ +$ make +``` + +Note that if ghdl has been installed in a non-standard way or in a +directory that is not in your PATH, you must give the name of the ghdl +executable: +```sh +$ make GHDL=/my/path/to/ghdl ``` This generates `ghdl.so`, which can be used directly: @@ -45,18 +54,12 @@ $ yosys -m ghdl.so To install the module: ```sh -make GHDL_PREFIX=/usr/local/ install +make install ``` ## How to build as part of yosys (not recommended) -Get ghdl from github, -build and install -build and install `libghdlsynth.a`: -```sh -$ make libghdlsynth.a -$ make install.libghdlsynth -``` +Get and build ghdl as in the previous section. Get yosys. |