initial commit

_gnu-make/Makefile

@@ -0,0 +1,65 @@
+.PHONY: build clean
+
+# directories
+ifeq ($(realpath .),)
+  $(error your version of Make doesn't support $$(realpath names...) - please use GNU Make 3.81 or later)
+endif
+
+ifeq ($(platform),)
+  __uname_s := $(shell sh -c 'uname -s 2>/dev/null | tr [A-Z] [a-z] || echo unknown-platform')
+  __uname_m := $(shell sh -c 'uname -m 2>/dev/null | tr [A-Z] [a-z] || echo unknown-architecture')
+
+  ifeq ($(__uname_s),linux)
+    override platform := linux
+    override architecture := $(__uname_m)
+  endif
+  ifeq ($(__uname_s),darwin)
+    override platform := mac
+    override architecture := $(__uname_m)
+  endif
+endif
+ifeq ($(architecture),)
+  override architecture := unknown-architecture
+endif
+
+prefix := $(realpath ..)
+srcdir := $(realpath ../src)
+exampledir := $(realpath ../example)
+testdir := $(realpath ../test)
+buildir := $(realpath .)/build
+binsubdir := $(platform)-$(architecture)
+bindir := $(prefix)/bin/$(binsubdir)
+
+CFLAGS := -O2 -g
+
+ifeq ($(platform),linux)
+override LDFLAGS := $(LDFLAGS) -ldl
+endif
+
+ifeq ($(platform),mac)
+libsuffix := .dylib
+else
+libsuffix := .so
+endif
+
+.PHONY: build-executable
+build: build-executable
+build-executable: $(bindir)/executable
+
+$(bindir)/executable: $(srcdir)/whereami.c $(srcdir)/whereami.h $(exampledir)/executable.c
+	mkdir -p $(@D)
+	$(CC) -o $@ -I $(srcdir) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -fpic $(filter-out %.h,$^)
+	$(if $(postbuild),$(postbuild) $@)
+
+.PHONY: build-library
+build: build-library
+build-library: $(bindir)/library$(libsuffix)
+
+$(bindir)/library$(libsuffix): $(srcdir)/whereami.c $(srcdir)/whereami.h $(exampledir)/library.c
+	mkdir -p $(@D)
+	$(CC) -shared -o $@ -I $(srcdir) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -fpic $(filter-out %.h,$^)
+	$(if $(postbuild),$(postbuild) $@)
+
+clean:
+	rm -rf $(buildir)
+	rm -rf $(bindir)