Split sources, made separate headers

Makefile will autogenerate library header, excluding lines containing "@exclude"

Makefile

@@ -21,21 +21,21 @@ STATICLIB := $(LIBNAME).a
 BUILDDIR := build/intermediates/
 PREFIX ?= /usr/local
 BINDIR ?= $(PREFIX)/bin
+MANDIR ?= $(PREFIX)/man
 CONFIGDIR ?= $(PREFIX)/etc
 INCLUDEDIR ?= $(PREFIX)/include
 LIBDIR ?= $(PREFIX)/lib
 DATADIR ?= $(PREFIX)/share
-MANDIR ?= $(DATADIR)/man
 DOCDIR ?= $(DATADIR)/$(LIBNAME)/doc
 
 SRCS := $(notdir $(wildcard src/*.cpp))
 OBJS := $(SRCS:.cpp=.o)
 DEPS := $(SRCS:.cpp=.d)
-HDRS := $(wildcard src/*.hpp)
+HDRS ?= $(wildcard src/*.hpp)
 
 CXX ?= g++
 
-CXXFLAGS += -Wshadow -Wall -Wpedantic -Wextra -g -fno-strict-aliasing -std=c++17 -fPIC
+CXXFLAGS += -Wshadow -Wall -Wpedantic -Wextra -g -std=c++17 -fPIC
 ifeq ($(DEBUG),1)
 	CXXFLAGS += -D DEBUG -O0
 	CONFIG := debug
@@ -81,6 +81,19 @@ endif
 $(OUTDIR)$(STATICLIB): $(OBJS)
 	ar r $(OUTDIR)$(STATICLIB) $(addprefix $(BUILDDIR),$(OBJS))
 
+ifeq ($(GENERATELIBHEADER),1)
+$(LIBNAME).hpp: $(HDRS)
+	@echo updating build/$(LIBNAME).hpp
+	@cp /dev/null build/$(LIBNAME).hpp
+	@for h in $(HDRS); \
+	do \
+		sed '/@exclude/d' $$h >> build/$(LIBNAME).hpp; \
+	done
+HEADERSRCDIR := build
+else
+HEADERSRCDIR := src
+endif
+
 test:
 	$(MAKE) -C tests && tests/tests
 
@@ -88,11 +101,16 @@ clean:
 	$(RM) build
 	$(MAKE) -C tests clean
 
-install: $(OUTDIR)$(REALNAME)
+ifeq ($(GENERATELIBHEADER),1)
+install: $(LIBNAME).hpp
+else
+install:
+endif
 	$(INSTALL) -d $(LIBDIR)
 	$(INSTALL) -m 644 $(OUTDIR)$(REALNAME) $(LIBDIR)
-	$(INSTALL) -d $(INCLUDEDIR)
-	$(INSTALL) -m 644 src/$(LIBNAME).hpp $(INCLUDEDIR)
+	$(INSTALL) -d $(INCLUDEDIR)/$(LIBNAME)
+	$(INSTALL) -m 644 $(HEADERSRCDIR)/$(LIBNAME).hpp $(INCLUDEDIR)/$(LIBNAME)
+	$(INSTALL) -m 644 $(HDRS) $(INCLUDEDIR)/$(LIBNAME)
 ifeq ($(UNAME_S),Darwin)
 	cd $(LIBDIR) && ln -sf $(REALNAME) $(SONAME)
 endif