build: avoid linkage of directly unused libraries

This commit is contained in:
Yang Tse 2012-11-28 18:31:23 +01:00
parent 534d2ca1d7
commit 16a8281f71
5 changed files with 43 additions and 16 deletions

View File

@ -2103,6 +2103,7 @@ AC_DEFUN([CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC], [
# #
curl_cv_save_LIBS="$LIBS" curl_cv_save_LIBS="$LIBS"
curl_cv_gclk_LIBS="unknown" curl_cv_gclk_LIBS="unknown"
curl_cv_save_CURL_LIBS="$CURL_LIBS"
# #
for x_xlibs in '' '-lrt' '-lposix4' ; do for x_xlibs in '' '-lrt' '-lposix4' ; do
if test "$curl_cv_gclk_LIBS" = "unknown"; then if test "$curl_cv_gclk_LIBS" = "unknown"; then
@ -2196,6 +2197,7 @@ AC_DEFUN([CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC], [
AC_MSG_WARN([HAVE_CLOCK_GETTIME_MONOTONIC will not be defined]) AC_MSG_WARN([HAVE_CLOCK_GETTIME_MONOTONIC will not be defined])
ac_cv_func_clock_gettime="no" ac_cv_func_clock_gettime="no"
LIBS="$curl_cv_save_LIBS" LIBS="$curl_cv_save_LIBS"
CURL_LIBS="$curl_cv_save_CURL_LIBS"
]) ])
fi fi
# #

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@ -753,7 +753,7 @@ then
fi fi
if test ! -z "$winsock_LIB"; then if test ! -z "$winsock_LIB"; then
my_ac_save_LIBS=$LIBS my_ac_save_LIBS=$LIBS
LIBS="$winsock_LIB $LIBS" LIBS="$LIBS $winsock_LIB"
AC_MSG_CHECKING([for gethostbyname in $winsock_LIB]) AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
AC_LINK_IFELSE([ AC_LINK_IFELSE([
AC_LANG_PROGRAM([[ AC_LANG_PROGRAM([[
@ -869,10 +869,11 @@ CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
dnl ********************************************************************** dnl **********************************************************************
dnl The preceding library checks are all potentially useful for test dnl The preceding library checks are all potentially useful for test
dnl servers (for providing networking support). Save the list of required dnl servers and libtest cases which require networking and clock_gettime
dnl libraries at this point for use while linking those test servers. dnl support. Save the list of required libraries at this point for use
dnl while linking those test servers and programs.
dnl ********************************************************************** dnl **********************************************************************
TEST_SERVER_LIBS=$LIBS CURL_NETWORK_AND_TIME_LIBS=$LIBS
dnl ********************************************************************** dnl **********************************************************************
AC_MSG_CHECKING([whether to use libgcc]) AC_MSG_CHECKING([whether to use libgcc])
@ -3322,22 +3323,20 @@ if test ! -z "$winsock_LIB"; then
dnl end. dnl end.
LIBS="$LIBS $winsock_LIB" LIBS="$LIBS $winsock_LIB"
TEST_SERVER_LIBS="$TEST_SERVER_LIBS $winsock_LIB"
fi fi
dnl dnl
dnl All the library dependencies put into $LIB apply to libcurl only. dnl All the library dependencies put into $LIB apply to libcurl only.
dnl Those in $CURL_LIBS apply to the curl command-line client only. dnl Those in $CURL_LIBS apply to the curl command-line client only.
dnl Those in $TEST_SERVER_LIBS apply to test servers only.
dnl Those in $ALL_LIBS apply to all targets, including test targets. dnl Those in $ALL_LIBS apply to all targets, including test targets.
dnl dnl
LIBCURL_LIBS=$LIBS LIBCURL_LIBS=$LIBS
AC_SUBST(LIBCURL_LIBS) AC_SUBST(LIBCURL_LIBS)
AC_SUBST(CURL_LIBS) AC_SUBST(CURL_LIBS)
AC_SUBST(TEST_SERVER_LIBS)
AC_SUBST(CURL_NETWORK_LIBS) AC_SUBST(CURL_NETWORK_LIBS)
AC_SUBST(CURL_NETWORK_AND_TIME_LIBS)
LIBS=$ALL_LIBS dnl LIBS is a magic variable that's used for every link LIBS=$ALL_LIBS dnl LIBS is a magic variable that's used for every link
AM_CONDITIONAL(CROSSCOMPILING, test x$cross_compiling = xyes) AM_CONDITIONAL(CROSSCOMPILING, test x$cross_compiling = xyes)
@ -3473,8 +3472,8 @@ squeeze LIBS
squeeze CURL_LIBS squeeze CURL_LIBS
squeeze LIBCURL_LIBS squeeze LIBCURL_LIBS
squeeze TEST_SERVER_LIBS
squeeze CURL_NETWORK_LIBS squeeze CURL_NETWORK_LIBS
squeeze CURL_NETWORK_AND_TIME_LIBS
squeeze SUPPORT_FEATURES squeeze SUPPORT_FEATURES
squeeze SUPPORT_PROTOCOLS squeeze SUPPORT_PROTOCOLS

View File

@ -56,7 +56,7 @@ test1022.pl Makefile.inc notexists.pl
CFLAG_CURL_SYMBOL_HIDING = @CFLAG_CURL_SYMBOL_HIDING@ CFLAG_CURL_SYMBOL_HIDING = @CFLAG_CURL_SYMBOL_HIDING@
# Dependencies (may need to be overriden) # Dependencies (may need to be overriden)
LDADD = $(top_builddir)/lib/libcurl.la @CURL_LIBS@ LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_LIBS@
DEPENDENCIES = $(top_builddir)/lib/libcurl.la DEPENDENCIES = $(top_builddir)/lib/libcurl.la
# Mostly for Windows build targets, when using static libcurl # Mostly for Windows build targets, when using static libcurl

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@ -28,20 +28,25 @@ chkhostname_DEPENDENCIES =
chkhostname_CFLAGS = $(AM_CFLAGS) chkhostname_CFLAGS = $(AM_CFLAGS)
lib500_SOURCES = lib500.c $(SUPPORTFILES) $(TESTUTIL) $(TSTTRACE) lib500_SOURCES = lib500.c $(SUPPORTFILES) $(TESTUTIL) $(TSTTRACE)
lib500_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib501_SOURCES = lib501.c $(SUPPORTFILES) lib501_SOURCES = lib501.c $(SUPPORTFILES)
lib502_SOURCES = lib502.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib502_SOURCES = lib502.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib502_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib503_SOURCES = lib503.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib503_SOURCES = lib503.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib503_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib504_SOURCES = lib504.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib504_SOURCES = lib504.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib504_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib505_SOURCES = lib505.c $(SUPPORTFILES) lib505_SOURCES = lib505.c $(SUPPORTFILES)
lib506_SOURCES = lib506.c $(SUPPORTFILES) lib506_SOURCES = lib506.c $(SUPPORTFILES)
lib507_SOURCES = lib507.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib507_SOURCES = lib507.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib507_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib508_SOURCES = lib508.c $(SUPPORTFILES) lib508_SOURCES = lib508.c $(SUPPORTFILES)
@ -74,31 +79,40 @@ lib523_SOURCES = lib523.c $(SUPPORTFILES)
lib524_SOURCES = lib524.c $(SUPPORTFILES) lib524_SOURCES = lib524.c $(SUPPORTFILES)
lib525_SOURCES = lib525.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib525_SOURCES = lib525.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib525_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib526_SOURCES = lib526.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib526_SOURCES = lib526.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib526_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib526_CPPFLAGS = $(AM_CPPFLAGS) -DLIB526 lib526_CPPFLAGS = $(AM_CPPFLAGS) -DLIB526
lib527_SOURCES = lib526.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib527_SOURCES = lib526.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib527_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib527_CPPFLAGS = $(AM_CPPFLAGS) -DLIB527 lib527_CPPFLAGS = $(AM_CPPFLAGS) -DLIB527
lib529_SOURCES = lib525.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib529_SOURCES = lib525.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib529_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib529_CPPFLAGS = $(AM_CPPFLAGS) -DLIB529 lib529_CPPFLAGS = $(AM_CPPFLAGS) -DLIB529
lib530_SOURCES = lib530.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib530_SOURCES = lib530.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib530_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib530_CPPFLAGS = $(AM_CPPFLAGS) -DLIB530 lib530_CPPFLAGS = $(AM_CPPFLAGS) -DLIB530
lib532_SOURCES = lib526.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib532_SOURCES = lib526.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib532_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib532_CPPFLAGS = $(AM_CPPFLAGS) -DLIB532 lib532_CPPFLAGS = $(AM_CPPFLAGS) -DLIB532
lib533_SOURCES = lib533.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib533_SOURCES = lib533.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib533_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib536_SOURCES = lib536.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib536_SOURCES = lib536.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib536_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib537_SOURCES = lib537.c $(SUPPORTFILES) $(WARNLESS) lib537_SOURCES = lib537.c $(SUPPORTFILES) $(WARNLESS)
lib539_SOURCES = lib539.c $(SUPPORTFILES) lib539_SOURCES = lib539.c $(SUPPORTFILES)
lib540_SOURCES = lib540.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib540_SOURCES = lib540.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib540_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib541_SOURCES = lib541.c $(SUPPORTFILES) lib541_SOURCES = lib541.c $(SUPPORTFILES)
@ -119,6 +133,7 @@ lib548_CPPFLAGS = $(AM_CPPFLAGS) -DLIB548
lib549_SOURCES = lib549.c $(SUPPORTFILES) lib549_SOURCES = lib549.c $(SUPPORTFILES)
lib555_SOURCES = lib555.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib555_SOURCES = lib555.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib555_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib552_SOURCES = lib552.c $(SUPPORTFILES) $(WARNLESS) lib552_SOURCES = lib552.c $(SUPPORTFILES) $(WARNLESS)
@ -131,16 +146,19 @@ lib556_SOURCES = lib556.c $(SUPPORTFILES)
lib557_SOURCES = lib557.c $(SUPPORTFILES) lib557_SOURCES = lib557.c $(SUPPORTFILES)
lib560_SOURCES = lib560.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib560_SOURCES = lib560.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib560_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib574_SOURCES = lib574.c $(SUPPORTFILES) lib574_SOURCES = lib574.c $(SUPPORTFILES)
lib575_SOURCES = lib575.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib575_SOURCES = lib575.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib575_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib576_SOURCES = lib576.c $(SUPPORTFILES) lib576_SOURCES = lib576.c $(SUPPORTFILES)
lib562_SOURCES = lib562.c $(SUPPORTFILES) lib562_SOURCES = lib562.c $(SUPPORTFILES)
lib564_SOURCES = lib564.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib564_SOURCES = lib564.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib564_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib565_SOURCES = lib510.c $(SUPPORTFILES) lib565_SOURCES = lib510.c $(SUPPORTFILES)
lib565_CPPFLAGS = $(AM_CPPFLAGS) -DLIB565 lib565_CPPFLAGS = $(AM_CPPFLAGS) -DLIB565
@ -160,16 +178,19 @@ lib571_SOURCES = lib571.c $(SUPPORTFILES) $(WARNLESS)
lib572_SOURCES = lib572.c $(SUPPORTFILES) lib572_SOURCES = lib572.c $(SUPPORTFILES)
lib573_SOURCES = lib573.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) $(TSTTRACE) lib573_SOURCES = lib573.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) $(TSTTRACE)
lib573_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib578_SOURCES = lib578.c $(SUPPORTFILES) lib578_SOURCES = lib578.c $(SUPPORTFILES)
lib579_SOURCES = lib579.c $(SUPPORTFILES) lib579_SOURCES = lib579.c $(SUPPORTFILES)
lib582_SOURCES = lib582.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib582_SOURCES = lib582.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib582_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib583_SOURCES = lib583.c $(SUPPORTFILES) lib583_SOURCES = lib583.c $(SUPPORTFILES)
lib585_SOURCES = lib500.c $(SUPPORTFILES) $(TESTUTIL) $(TSTTRACE) lib585_SOURCES = lib500.c $(SUPPORTFILES) $(TESTUTIL) $(TSTTRACE)
lib585_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib585_CPPFLAGS = $(AM_CPPFLAGS) -DLIB585 lib585_CPPFLAGS = $(AM_CPPFLAGS) -DLIB585
lib586_SOURCES = lib586.c $(SUPPORTFILES) lib586_SOURCES = lib586.c $(SUPPORTFILES)
@ -180,19 +201,24 @@ lib587_CPPFLAGS = $(AM_CPPFLAGS) -DLIB587
lib590_SOURCES = lib590.c $(SUPPORTFILES) lib590_SOURCES = lib590.c $(SUPPORTFILES)
lib591_SOURCES = lib591.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib591_SOURCES = lib591.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib591_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib597_SOURCES = lib597.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib597_SOURCES = lib597.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib597_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib598_SOURCES = lib598.c $(SUPPORTFILES) lib598_SOURCES = lib598.c $(SUPPORTFILES)
lib599_SOURCES = lib599.c $(SUPPORTFILES) lib599_SOURCES = lib599.c $(SUPPORTFILES)
lib1500_SOURCES = lib1500.c $(SUPPORTFILES) $(TESTUTIL) lib1500_SOURCES = lib1500.c $(SUPPORTFILES) $(TESTUTIL)
lib1500_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib1501_SOURCES = lib1501.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS) lib1501_SOURCES = lib1501.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib1501_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@
lib1502_SOURCES = lib1502.c $(SUPPORTFILES) lib1502_SOURCES = lib1502.c $(SUPPORTFILES)
libauthretry_SOURCES = libauthretry.c $(SUPPORTFILES) libauthretry_SOURCES = libauthretry.c $(SUPPORTFILES)
libntlmconnect_SOURCES = libntlmconnect.c $(SUPPORTFILES) $(TESTUTIL) libntlmconnect_SOURCES = libntlmconnect.c $(SUPPORTFILES) $(TESTUTIL)
libntlmconnect_LDADD = $(top_builddir)/lib/libcurl.la @CURL_NETWORK_AND_TIME_LIBS@

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@ -31,42 +31,42 @@ UTIL = \
getpart_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) \ getpart_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) \
testpart.c testpart.c
getpart_LDADD = @TEST_SERVER_LIBS@ getpart_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
getpart_CFLAGS = $(AM_CFLAGS) getpart_CFLAGS = $(AM_CFLAGS)
resolve_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ resolve_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \
resolve.c resolve.c
resolve_LDADD = @TEST_SERVER_LIBS@ resolve_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
resolve_CFLAGS = $(AM_CFLAGS) resolve_CFLAGS = $(AM_CFLAGS)
rtspd_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ rtspd_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \
server_sockaddr.h \ server_sockaddr.h \
rtspd.c rtspd.c
rtspd_LDADD = @TEST_SERVER_LIBS@ rtspd_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
rtspd_CFLAGS = $(AM_CFLAGS) rtspd_CFLAGS = $(AM_CFLAGS)
sockfilt_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ sockfilt_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \
server_sockaddr.h \ server_sockaddr.h \
sockfilt.c \ sockfilt.c \
$(top_srcdir)/lib/inet_pton.c $(top_srcdir)/lib/inet_pton.c
sockfilt_LDADD = @TEST_SERVER_LIBS@ sockfilt_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
sockfilt_CFLAGS = $(AM_CFLAGS) sockfilt_CFLAGS = $(AM_CFLAGS)
sws_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ sws_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \
server_sockaddr.h \ server_sockaddr.h \
sws.c \ sws.c \
$(top_srcdir)/lib/inet_pton.c $(top_srcdir)/lib/inet_pton.c
sws_LDADD = @TEST_SERVER_LIBS@ sws_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
sws_CFLAGS = $(AM_CFLAGS) sws_CFLAGS = $(AM_CFLAGS)
tftpd_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ tftpd_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \
server_sockaddr.h \ server_sockaddr.h \
tftpd.c \ tftpd.c \
tftp.h tftp.h
tftpd_LDADD = @TEST_SERVER_LIBS@ tftpd_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
tftpd_CFLAGS = $(AM_CFLAGS) tftpd_CFLAGS = $(AM_CFLAGS)
fake_ntlm_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ fake_ntlm_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \
fake_ntlm.c fake_ntlm.c
fake_ntlm_LDADD = @TEST_SERVER_LIBS@ fake_ntlm_LDADD = @CURL_NETWORK_AND_TIME_LIBS@
fake_ntlm_CFLAGS = $(AM_CFLAGS) fake_ntlm_CFLAGS = $(AM_CFLAGS)