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add explanatory comments to Makefiles

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This commit is contained in:
Kill Your TV 2014-12-17 20:46:19 +00:00
parent 21e3778e69
commit b343c24a9f
3 changed files with 29 additions and 9 deletions
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15
Makefile
View File

@ -8,16 +8,16 @@ USE_AESNI := yes
USE_STATIC := no
ifeq ($(UNAME),Darwin)
DAEMON_SRC += DaemonLinux.cpp
DAEMON_SRC += DaemonLinux.cpp
include Makefile.osx
else ifeq ($(UNAME),FreeBSD)
DAEMON_SRC += DaemonLinux.cpp
DAEMON_SRC += DaemonLinux.cpp
include Makefile.bsd
else ifeq ($(UNAME),Linux)
DAEMON_SRC += DaemonLinux.cpp
DAEMON_SRC += DaemonLinux.cpp
include Makefile.linux
else # win32
DAEMON_SRC += DaemonWin32.cpp
DAEMON_SRC += DaemonWin32.cpp
endif
all: obj $(SHLIB) $(I2PD)
@ -25,6 +25,13 @@ all: obj $(SHLIB) $(I2PD)
obj:
mkdir -p obj
## NOTE: The NEEDED_CXXFLAGS are here so that CXXFLAGS can be specified at build time
## **without** overwriting the CXXFLAGS which we need in order to build.
## For example, when adding 'hardening flags' to the build
## (e.g. -fstack-protector-strong -Wformat -Werror=format-security), we do not want to remove
## -std=c++11. If you want to remove this variable please do so in a way that allows setting
## custom FLAGS to work at build-time.
# weaker rule for building files without headers
obj/%.o : %.cpp
$(CXX) $(CXXFLAGS) $(NEEDED_CXXFLAGS) $(INCFLAGS) $(CPU_FLAGS) -c -o $@ $<

6
Makefile.bsd
View File

@ -1,5 +1,11 @@
CXX = g++
CXXFLAGS = -O2
## NOTE: NEEDED_CXXFLAGS is here so that custom CXXFLAGS can be specified at build time
## **without** overwriting the CXXFLAGS which we need in order to build.
## For example, when adding 'hardening flags' to the build
## (e.g. -fstack-protector-strong -Wformat -Werror=format-security), we do not want to remove
## -std=c++11. If you want to remove this variable please do so in a way that allows setting
## custom FLAGS to work at build-time.
NEEDED_CXXFLAGS = -std=c++11
INCFLAGS = -I/usr/include/ -I/usr/local/include/
LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib

17
Makefile.linux
View File

@ -1,18 +1,25 @@
CXXFLAGS = -g -Wall -fPIC
INCFLAGS =
## NOTE: The NEEDED_CXXFLAGS are here so that custom CXXFLAGS can be specified at build time
## **without** overwriting the CXXFLAGS which we need in order to build.
## For example, when adding 'hardening flags' to the build
## (e.g. -fstack-protector-strong -Wformat -Werror=format-security), we do not want to remove
## -std=c++11. If you want to remove this variable please do so in a way that allows setting
## custom FLAGS to work at build-time.
# detect proper flag for c++11 support by gcc
CXXVER := $(shell $(CXX) -dumpversion)
ifeq ($(shell expr match ${CXXVER} "4\.[0-9][0-9]"),4) # >= 4.10
NEEDED_CXXFLAGS += -std=c++11
NEEDED_CXXFLAGS += -std=c++11
else ifeq ($(shell expr match ${CXXVER} "4\.[7-9]"),3) # >= 4.7
NEEDED_CXXFLAGS += -std=c++11
NEEDED_CXXFLAGS += -std=c++11
else ifeq ($(shell expr match ${CXXVER} "4\.6"),3) # = 4.6
NEEDED_CXXFLAGS += -std=c++0x
NEEDED_CXXFLAGS += -std=c++0x
else ifeq ($(shell expr match $(CXX) 'clang'),5)
NEEDED_CXXFLAGS += -std=c++11
NEEDED_CXXFLAGS += -std=c++11
else # not supported
$(error Compiler too old)
$(error Compiler too old)
endif
ifeq ($(USE_STATIC),yes)