haproxy/addons/ot/Makefile
Willy Tarreau bc2f3934f9 BUILD: makefile: ensure that all USE_* handlers appear before CFLAGS are used
It happens that a few "if USE_foo" were placed too low in the makefile,
and would mostly work by luck thanks to not using variables that were
already referenced before. The opentracing include is even trickier
because it extends OPTIONS_CFLAGS that was last read a few lines before
being included, but it only works because COPTS is defined as a macro and
not a variable, so it will be evaluated later. At least now it doesn't
touch OPTIONS_* anymore and since it's cleanly arranged, it will work by
default via the flags collector.

Let's just move these late USE_* handlers upper and place a visible
delimiter after them reminding not to add any after.
2022-12-23 16:53:35 +01:00

74 lines
1.9 KiB
Makefile

# USE_OT : enable the OpenTracing filter
# OT_DEBUG : compile the OpenTracing filter in debug mode
# OT_INC : force the include path to libopentracing-c-wrapper
# OT_LIB : force the lib path to libopentracing-c-wrapper
# OT_RUNPATH : add libopentracing-c-wrapper RUNPATH to haproxy executable
# OT_USE_VARS : allows the use of variables for the OpenTracing context
OT_DEFINE =
OT_CFLAGS =
OT_LDFLAGS =
OT_DEBUG_EXT =
OT_PKGSTAT =
OTC_WRAPPER = opentracing-c-wrapper
ifneq ($(OT_DEBUG),)
OT_DEBUG_EXT = _dbg
OT_DEFINE = -DDEBUG_OT
endif
ifeq ($(OT_INC),)
OT_PKGSTAT = $(shell pkg-config --exists $(OTC_WRAPPER)$(OT_DEBUG_EXT); echo $$?)
OT_CFLAGS = $(shell pkg-config --silence-errors --cflags $(OTC_WRAPPER)$(OT_DEBUG_EXT))
else
ifneq ($(wildcard $(OT_INC)/$(OTC_WRAPPER)/.*),)
OT_CFLAGS = -I$(OT_INC) $(if $(OT_DEBUG),-DOTC_DBG_MEM)
endif
endif
ifeq ($(OT_PKGSTAT),)
ifeq ($(OT_CFLAGS),)
$(error OpenTracing C wrapper : can't find headers)
endif
else
ifneq ($(OT_PKGSTAT),0)
$(error OpenTracing C wrapper : can't find package)
endif
endif
ifeq ($(OT_LIB),)
OT_LDFLAGS = $(shell pkg-config --silence-errors --libs $(OTC_WRAPPER)$(OT_DEBUG_EXT))
else
ifneq ($(wildcard $(OT_LIB)/lib$(OTC_WRAPPER).*),)
OT_LDFLAGS = -L$(OT_LIB) -l$(OTC_WRAPPER)$(OT_DEBUG_EXT)
ifneq ($(OT_RUNPATH),)
OT_LDFLAGS += -Wl,--rpath,$(OT_LIB)
endif
endif
endif
ifeq ($(OT_LDFLAGS),)
$(error OpenTracing C wrapper : can't find library)
endif
OPTIONS_OBJS += \
addons/ot/src/cli.o \
addons/ot/src/conf.o \
addons/ot/src/event.o \
addons/ot/src/filter.o \
addons/ot/src/group.o \
addons/ot/src/http.o \
addons/ot/src/opentracing.o \
addons/ot/src/parser.o \
addons/ot/src/pool.o \
addons/ot/src/scope.o \
addons/ot/src/util.o
ifneq ($(OT_USE_VARS),)
OT_DEFINE += -DUSE_OT_VARS
OPTIONS_OBJS += \
addons/ot/src/vars.o
endif
OT_CFLAGS := $(OT_CFLAGS) -Iaddons/ot/include $(OT_DEFINE)