-
ifndef Lib.mak.included
Lib.mak.included := 1
# These variables should be provided by the includer Makefile:
# P should be the project name, mostly used to handle include directories
# T should be the path to the top-level directory.
-# C should be the path to the current directory.
+# S should be sub-directory where the current makefile is, relative to $T.
# Verbosity flag (empty show nice messages, non-empty use make messages)
# When used internal, $V expand to @ is nice messages should be printed, this
# Use C++ linker by default
LINKER := $(CXX)
+# Default mode used to install files
+IMODE ?= 0644
+
+# Degault install flags
+IFLAGS ?= -D
+
# Use precompiled headers if non-empty
GCH ?=
# Directories
##############
+# Base directory where to install files (can be overrided, should be absolute)
+prefix ?= /usr/local
+
+# Path to a complete alternative environment, usually a jail, or an installed
+# system mounted elsewhere than /.
+DESTDIR ?=
+
# Use absolute paths to avoid problems with automatic dependencies when
# building from subdirectories
T := $(abspath $T)
# Libraries directory
L ?= $G/lib
+# Installation directory
+I := $(DESTDIR)$(prefix)
+
# Includes directory
-I ?= $G/include
+INCLUDE_DIR ?= $G/include
-# Generated includes directory
-J ?= $G/geninc
+# Directory of the current makefile (this might not be the same as $(CURDIR)
+# This variable is "lazy" because $S changes all the time, so it should be
+# evaluated in the context where $C is used, not here.
+C = $T/$S
# Functions
############
+# Compare two strings, if they are the same, returns the string, if not,
+# returns empty.
+eq = $(if $(subst $1,,$2),,$1)
+
# Find sources files and get the corresponding object names
# The first argument should be the sources extension ("c" or "cpp" typically)
# It expects the variable $T and $O to be defined as commented previously in
-# this file. $C should be defined to the path to the current directory relative
-# to the top-level.
-find_objects = $(patsubst $T/%.$1,$O/%.o,$(shell find $T/$C -name '*.$1'))
+# this file.
+find_objects = $(patsubst $T/%.$1,$O/%.o,$(shell find $C -name '*.$1'))
+
+# Find sources files and get the corresponding object names
+# The first argument should be the sources extension ("c" or "cpp" typically)
+# It expects the variable $T and $O to be defined as commented previously in
+# this file.
+find_headers = $(patsubst $C/%.$1,$2/%.$1,$(shell find $C -name '*.$1'))
# Abbreviate a file name. Cut the leading part of a file if it match to the $T
# directory, so it can be displayed as if it were a relative directory. Take
# just one argument, the file name.
-abbr = $(addprefix $(shell echo $R | sed 's|/\?\([^/]\+\)/\?|../|g'),\
- $(subst $T,.,$(patsubst $T/%,%,$1)))
+abbr_helper = $(subst $T,.,$(patsubst $T/%,%,$1))
+abbr = $(if $(call eq,$(call abbr_helper,$1),$1),$1, \
+ $(addprefix $(shell echo $R | sed 's|/\?\([^/]\+\)/\?|../|g'),\
+ $(call abbr_helper,$1)))
# Execute a command printing a nice message if $V is @.
# The first argument is mandatory and it's the command to execute. The second
$Vif test -f $O/$*.d; then \
tmp=`mktemp`; \
h=`awk -F: '!$$0 {f = 1} $$0 && f {print $$1}' $O/$*.d`; \
- grep -h '^#include <' $(call abbr,$<) $$h | sort -u > "$$tmp"; \
- if diff -q -w "$(call abbr,$O/$*.$1.h)" "$$tmp" > /dev/null 2>&1; \
+ grep -h '^#include <' $< $$h | sort -u > "$$tmp"; \
+ if diff -q -w "$O/$*.$1.h" "$$tmp" > /dev/null 2>&1; \
then \
rm "$$tmp"; \
else \
- mv "$$tmp" "$(call abbr,$O/$*.$1.h)"; \
+ mv "$$tmp" "$O/$*.$1.h"; \
$(call vexec,$(COMPILE.$1) -o "$O/$*.$1.h.gch" "$O/$*.$1.h",\
$O/$*.$1.h.gch); \
fi \
else \
- touch "$(call abbr,$O/$*.$1.h)"; \
+ touch "$O/$*.$1.h"; \
fi \
)
$(call exec,$(COMPILE.$1) -o $@ -MMD -MP $(if $(GCH),-include $O/$*.$1.h) $<)
$(patsubst $L/lib%.so,-l%,$(filter %.so,$^)) \
$(foreach obj,$(filter %.o,$^),$(obj)))
+# Install a file. All arguments are optional. The first argument is the file
+# mode (defaults to 0644). The second argument are extra flags to the install
+# command (defaults to -D). The third argument is the source file to install
+# (defaults to $<) and the last one is the destination (defaults to $@).
+install_file = $(call exec,install -m $(if $1,$1,0644) $(if $2,$2,-D) \
+ $(if $3,$3,$<) $(if $4,$4,$@))
+
+# Create a symbolic link to the project under the $(INCLUDE_DIR). The first
+# argument is the name of symlink to create. The link is only created if it
+# doesn't already exist.
+symlink_include_dir = $(shell \
+ test -L $(INCLUDE_DIR)/$1 \
+ || ln -s $C $(INCLUDE_DIR)/$1 )
+
# Overrided flags
##################
override CPPFLAGS += -Wall
# Use the includes directories to search for includes
-override CPPFLAGS += -I$I -I$J
+override CPPFLAGS += -I$(INCLUDE_DIR)
+
+# Let the program know where it will be installed
+override CPPFLAGS += -DPREFIX=$(prefix)
# Be standard compilant
override CFLAGS += -std=c99 -pedantic
endif
-# Automatic rebuilding when flags or commands changes
-######################################################
-
-# Re-compile C files if one of this variables changes
-COMPILE.c.FLAGS := $(CC) ~ $(CPPFLAGS) ~ $(CFLAGS) ~ $(TARGET_ARCH)
-
-# Re-compile C++ files if one of this variables changes
-COMPILE.cpp.FLAGS := $(CXX) ~ $(CPPFLAGS) ~ $(CXXFLAGS) ~ $(TARGET_ARCH)
+# Automatic dependency handling
+################################
-# Re-link binaries and libraries if one of this variables changes
-LINK.o.FLAGS := $(LD) ~ $(LDFLAGS) ~ $(TARGET_ARCH)
+# These files are created during compilation.
+sinclude $(shell test -d $O && find $O -name '*.d')
# Default rules
################
+# Compile C objects
$O/%.o: $T/%.c $G/compile-c-flags
$(call compile,c)
+# Compile C++ objects
$O/%.o: $T/%.cpp $G/compile-cpp-flags
$(call compile,cpp)
+# Link binary programs
$B/%: $G/link-o-flags
$(call link)
+# Link shared libraries
$L/%.so: override CFLAGS += -fPIC
$L/%.so: override CXXFLAGS += -fPIC
$L/%.so: $G/link-o-flags
$(call link,-shared)
+# Install binary programs
+$I/bin/%:
+ $(call install_file,0755)
+
+# Install system binary programs
+$I/sbin/%:
+ $(call install_file,0755)
+
+# Install libraries
+$I/lib/%:
+ $(call install_file)
+
.PHONY: clean
clean:
$(call exec,$(RM) -r $D,$D)
+# Phony rule to uninstall all built targets (like "install", uses $(install)).
+.PHONY: uninstall
+uninstall:
+ $V$(foreach i,$(install),$(call vexec,$(RM) $i,$i);)
-# Automatic dependency handling
-################################
+# These rules use the "Secondary Expansion" GNU Make feature, to allow
+# sub-makes to add values to the special variables $(all), after this makefile
+# was read.
+.SECONDEXPANSION:
+
+# Phony rule to make all the targets (sub-makefiles can append targets to build
+# to the $(all) variable).
+.PHONY: all
+all: $$(all)
-sinclude $(shell test -d $O && find $O -name '*.d')
+# Phony rule to install all built targets (sub-makefiles can append targets to
+# build to the $(install) variable).
+.PHONY: install
+install: $$(install)
# Create build directory structure
###################################
+# Create $O, $B, $L and $(INCLUDE_DIR) directories and replicate the directory
+# structure of the project into $O. Create one symlink "last" to the current
+# build directory.
+#
+# NOTE: the second mkdir can yield no arguments if the project don't have any
+# subdirectories, that's why the current directory "." is included, so it
+# won't show an error message in case of no subdirectories.
+setup_build_dir__ := $(shell \
+ mkdir -p $O $B $L $(INCLUDE_DIR); \
+ mkdir -p . $(addprefix $O,$(patsubst $T%,%,\
+ $(shell find $T -type d -not -path '$D*'))); \
+ test -L $D/last || ln -s $F $D/last )
+
+
+# Automatic rebuilding when flags or commands changes
+######################################################
+
+# Re-compile C files if one of this variables changes
+COMPILE.c.FLAGS += $(CC) ~ $(CPPFLAGS) ~ $(CFLAGS) ~ $(TARGET_ARCH) ~ $(prefix)
+
+# Re-compile C++ files if one of this variables changes
+COMPILE.cpp.FLAGS += $(CXX) ~ $(CPPFLAGS) ~ $(CXXFLAGS) ~ $(TARGET_ARCH) \
+ ~ $(prefix)
+
+# Re-link binaries and libraries if one of this variables changes
+LINK.o.FLAGS += $(LD) ~ $(LDFLAGS) ~ $(TARGET_ARCH)
+
# Create a file with flags used to trigger rebuilding when they change. The
# first argument is the name of the file where to store the flags, the second
# are the flags and the third argument is a text to be displayed if the flags
test -f $1 && echo "$3"; \
echo "$2" > $1 ; fi
-# Create $O, $B, $L, $I and $J directories and replicate the directory
-# structure of the project into $O. Create one symlink "last" to the current
-# build directory and another to use as include directory. It update the flags
-# files to detect flag and/or compiler changes to force a rebuild.
-#
-# NOTE: the second mkdir can yield no arguments if the project don't have any
-# subdirectories, that's why the current directory "." is included, so it
-# won't show an error message in case of no subdirectories.
-setup_build_dir__ := $(shell \
- mkdir -p $O $B $L $I $J; \
- mkdir -p . $(addprefix $O,$(patsubst $T%,%,\
- $(shell find $T -type d -not -path '$D*'))); \
+# Create files containing the current flags to trigger a rebuild if they change
+setup_flag_files__ := $(shell \
$(call gen_rebuild_flags,$G/compile-c-flags, \
$(COMPILE.c.FLAGS),C compiler or flags;); \
$(call gen_rebuild_flags,$G/compile-cpp-flags, \
$(COMPILE.cpp.FLAGS),C++ compiler or flags;); \
$(call gen_rebuild_flags,$G/link-o-flags, \
- $(LINK.o.FLAGS),linker or link flags;); \
- test -L $I/$P || ln -s $T $I/$P; \
- test -L $D/last || ln -s $F $D/last )
+ $(LINK.o.FLAGS),linker or link flags;) )
# Print any generated message (if verbose)
-$(if $V,$(if $(setup_build_dir__), \
- $(info !! Something changed: $(setup_build_dir__) \
+$(if $V,$(if $(setup_flag_files__), \
+ $(info !! Something changed: $(setup_flag_files__) \
re-building affected files...)))
-# Include the Build.mak for this directory
-include $T/Build.mak
-
-# Phony rule to make all the targets (sub-makefiles can append targets to build
-# to the $(all) variable).
-.PHONY: all
-all: $(all)
-
endif
projects / software / makeit.git / blobdiff