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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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7
Makefile
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@ -25,6 +25,13 @@ all: obj $(SHLIB) $(I2PD)
obj: obj:
mkdir -p 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 # weaker rule for building files without headers
obj/%.o : %.cpp obj/%.o : %.cpp
$(CXX) $(CXXFLAGS) $(NEEDED_CXXFLAGS) $(INCFLAGS) $(CPU_FLAGS) -c -o $@ $< $(CXX) $(CXXFLAGS) $(NEEDED_CXXFLAGS) $(INCFLAGS) $(CPU_FLAGS) -c -o $@ $<

6
Makefile.bsd
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@ -1,5 +1,11 @@
CXX = g++ CXX = g++
CXXFLAGS = -O2 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 NEEDED_CXXFLAGS = -std=c++11
INCFLAGS = -I/usr/include/ -I/usr/local/include/ INCFLAGS = -I/usr/include/ -I/usr/local/include/
LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib

7
Makefile.linux
View file

@ -1,6 +1,13 @@
CXXFLAGS = -g -Wall -fPIC CXXFLAGS = -g -Wall -fPIC
INCFLAGS = 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 # detect proper flag for c++11 support by gcc
CXXVER := $(shell $(CXX) -dumpversion) CXXVER := $(shell $(CXX) -dumpversion)
ifeq ($(shell expr match ${CXXVER} "4\.[0-9][0-9]"),4) # >= 4.10 ifeq ($(shell expr match ${CXXVER} "4\.[0-9][0-9]"),4) # >= 4.10