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allow environment variables to set/extend CC, CXX, CFLAGS and LDFLAGS

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Moritz Warning 2015-07-03 20:18:19 +02:00
commit 235d4aba9a
3 changed files with 21 additions and 18 deletions
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15
make-linux.mk
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@ -18,9 +18,8 @@
#
# Automagically pick clang or gcc, with preference for clang
CC=$(shell if [ -e /usr/bin/clang ]; then echo clang; else echo gcc; fi)
CXX=$(shell if [ -e /usr/bin/clang++ ]; then echo clang++; else echo g++; fi)
CC?=$(shell if [ -e /usr/bin/clang ]; then echo clang; else echo gcc; fi)
CXX?=$(shell if [ -e /usr/bin/clang++ ]; then echo clang++; else echo g++; fi)
INCLUDES=
DEFS=
LIBS=
@ -43,16 +42,18 @@ endif
# "make debug" is a shortcut for this
ifeq ($(ZT_DEBUG),1)
DEFS+=-DZT_TRACE
CFLAGS=-Wall -g -pthread $(INCLUDES) $(DEFS)
CXXFLAGS=-Wall -g -pthread $(INCLUDES) $(DEFS)
CFLAGS+=-Wall -g -pthread $(INCLUDES) $(DEFS)
CXXFLAGS+=-Wall -g -pthread $(INCLUDES) $(DEFS)
LDFLAGS=
STRIP=echo
# The following line enables optimization for the crypto code, since
# C25519 in particular is almost UNUSABLE in -O0 even on a 3ghz box!
ext/lz4/lz4.o node/Salsa20.o node/SHA512.o node/C25519.o node/Poly1305.o: CFLAGS = -Wall -O2 -g -pthread $(INCLUDES) $(DEFS)
else
CFLAGS=-Wall -O3 -fPIE -fvisibility=hidden -fstack-protector -pthread $(INCLUDES) -DNDEBUG $(DEFS)
CXXFLAGS=-Wall -O3 -fPIE -fvisibility=hidden -fstack-protector -fno-rtti -pthread $(INCLUDES) -DNDEBUG $(DEFS)
CFLAGS?=-O3 -fstack-protector
CFLAGS+=-Wall -fPIE -fvisibility=hidden -pthread $(INCLUDES) -DNDEBUG $(DEFS)
CXXFLAGS?=-O3 -fstack-protector
CXXFLAGS+=-Wall -fPIE -fvisibility=hidden -fno-rtti -pthread $(INCLUDES) -DNDEBUG $(DEFS)
LDFLAGS=-pie -Wl,-z,relro,-z,now
STRIP=strip --strip-all
endif