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#
# Notes:
#
# * Compilation Defines:
#
# FAKE_STAT
# - Enables time faking also for files' timestamps.
#
# NO_ATFILE
# - Disables support for the fstatat() group of functions
#
# PTHREAD
# - Define this to enable multithreading support.
#
# PTHREAD_SINGLETHREADED_TIME
# - Define this if you want to single-thread time() ... there ARE
# possibile caching side-effects in a multithreaded environment
# without this, but the performance impact may require you to
# try it unsynchronized.
#
# FAKE_INTERNAL_CALLS
# - Also intercept libc internal __functions, e.g. not just time(),
# but also __time(). Enhances compatibility with applications
# that make use of low-level system calls, such as Java Virtual
# Machines.
#
# NO_CACHING
# - Disables the caching of the fake time offset. Only disable caching
# if you change the fake time offset during program runtime very
# frequently. Disabling the cache may negatively influence the
# performance.
#
# * Compilation addition: second libMT target added for building the pthread-
# enabled library as a separate library
#
# * Compilation switch change: previous versions compiled using '-nostartfiles'
# This is no longer the case since there is a 'startup' constructor for the library
# which is used to activate the start-at times when specified. This also initializes
# the dynamic disabling of the FAKE_STAT calls.
#
CC ?= gcc
INSTALL ?= install
PREFIX ?= /usr/local
CFLAGS += -std=gnu99 -Wall -DFAKE_STAT -DFAKE_INTERNAL_CALLS -fPIC -DPREFIX='"'$(PREFIX)'"'
LIB_LDFLAGS += -shared
LDFLAGS += -lrt
LDADD += -ldl -lm -lpthread
SRC = libfaketime.c
LIBS_OBJ = libfaketime.o libfaketimeMT.o
BINS = faketime
SONAME = 1
LIBS = libfaketime.so.${SONAME} libfaketimeMT.so.${SONAME}
all: ${LIBS} ${BINS}
faketimeMT.o: EXTRA_FLAGS := -DPTHREAD -DPTHREAD_SINGLETHREADED_TIME
${LIBS_OBJ}: libfaketime.c
${CC} -o $@ -c ${CFLAGS} ${EXTRA_FLAGS} $<
%.so.${SONAME}: %.o
${CC} -o $@ -Wl,-soname,$@ ${LDFLAGS} ${LIB_LDFLAGS} $< ${LDADD}
clean:
@rm -f ${LIBS_OBJ} ${LIBS} ${BINS}
distclean: clean
@echo
install: ${LIBS} ${BINS}
@echo
@echo "Copying the faketime libraries to ${DESTDIR}${PREFIX}/lib/faketime and the faketime wrapper script to ${DESTDIR}${PREFIX}/bin ..."
$(INSTALL) -dm0755 "${DESTDIR}${PREFIX}/lib/faketime/"
$(INSTALL) -m0644 ${LIBS} "${DESTDIR}${PREFIX}/lib/faketime/"
$(INSTALL) -Dm0755 faketime "${DESTDIR}${PREFIX}/bin/faketime"
uninstall:
for f in ${LIBS}; do rm -f "${DESTDIR}${PREFIX}/lib/faketime/$$f"; done
rmdir "${DESTDIR}${PREFIX}/lib/faketime"
rm -f "${DESTDIR}${PREFIX}/bin/faketime"
.PHONY: all clean distclean install uninstall
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