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# Setup OS specific variables
# Copyright 2008 Roy Marples <roy@marples.name>
# Work out if we need -lresolv or not
_LIBRESOLV_SH= printf '\#include <netinet/in.h>\n\#include <resolv.h>\nint main (void) { return (res_init ()); }\n' > .res_init.c; \
if ${CC} .res_init.c -o .res_init >/dev/null 2>&1; then \
echo ""; \
elif ${CC} .res_init.c -lresolv -o .res_init >/dev/null 2>&1; then \
echo "-lresolv"; \
else \
echo "Cannot work out how to get res_init to link" >&2; \
rm -f .res_init.c .res_init; \
exit 1; \
fi; \
rm -f .res_init.c .res_init
_LIBRESOLV!= ${_LIBRESOLV_SH}
LIBRESOLV= ${_LIBRESOLV}$(shell ${_LIBRESOLV_SH})
# Work out if we need -lrt or not
_LIBRT_SH= printf '\#include <time.h>\n\#include <unistd.h>\n\nint main (void) { struct timespec ts;\n\#if defined(_POSIX_MONOTONIC_CLOCK) && defined(CLOCK_MONOTONIC)\nreturn (clock_gettime (CLOCK_MONOTONIC, &ts));\n\#else\nreturn -1;\n\#endif\n}\n' > .clock_gettime.c; \
if ${CC} .clock_gettime.c -o .clock_gettime >/dev/null 2>&1; then \
echo ""; \
elif ${CC} .clock_gettime.c -lrt -o .clock_gettime >/dev/null 2>&1; then \
echo "-lrt"; \
else \
echo ""; \
fi; \
rm -f .clock_gettime.c .clock_gettime
_LIBRT!= ${_LIBRT_SH}
LIBRT= ${_LIBRT}$(shell ${_LIBRT_SH})
# Work out if our fork() works or not
_HAVE_FORK_SH= if test "${HAVE_FORK}" = "yes"; then \
echo ""; \
elif test -n "${HAVE_FORK}"; then \
echo "-DTHERE_IS_NO_FORK"; \
else \
printf '\#include <stdlib.h>\n\#include <unistd.h>\nint main (void) { pid_t pid = fork(); if (pid == -1) exit (-1); exit (0); }\n' > .fork.c; \
${CC} .fork.c -o .fork >/dev/null 2>&1; \
if ./.fork; then \
echo ""; \
else \
echo "-DTHERE_IS_NO_FORK"; \
fi; \
rm -f .fork.c .fork; \
fi;
_HAVE_FORK!= ${_HAVE_FORK_SH}
FORK= ${_HAVE_FORK}$(shell ${_HAVE_FORK_SH})
# info dir defaults to /var/lib/dhcpcd on Linux and /var/db elsewhere
_INFODIR_SH= if test -n "${INFODIR}"; then \
echo "${INFODIR}"; \
else \
case `uname -s` in \
Linux) echo "/var/lib/dhcpcd";; \
*) echo "/var/db";; \
esac \
fi
_INFODIR!= ${_INFODIR_SH}
INFOD?= ${_INFODIR}$(shell ${_INFODIR_SH})
# Work out how to restart services
_RC_SH= if test -n "${HAVE_INIT}"; then \
test "${HAVE_INIT}" = "no" || echo "-DENABLE_${HAVE_INIT}"; \
elif test -x /sbin/runscript; then echo "-DENABLE_OPENRC"; \
elif test -x /sbin/service; then echo "-DENABLE_SERVICE"; \
elif test -x /etc/rc.d/rc.S -a -x /etc/rc.d/rc.M; then echo "-DENABLE_SLACKRC"; \
elif test -d /etc/rc.d; then echo "-DENABLE_BSDRC"; \
elif test -d /etc/init.d; then echo "-DENABLE_SYSV"; \
fi
_RC!= ${_RC_SH}
RC= ${_RC}$(shell ${_RC_SH})
# glibc requires _BSD_SOURCE and _XOPEN_SOURCE
_DEF_SH= case `uname -s` in Linux) echo "-D_BSD_SOURCE -D_XOPEN_SOURCE=600";; *) echo;; esac
_DEF!= ${_DEF_SH}
CFLAGS+= ${_DEF}$(shell ${_DEF_SH})
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