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From: Michael Frysinger <vapier@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] sim: build: change AC_CHECK_LIB to AC_SEARCH_LIBS Date: Fri, 4 Nov 2022 00:43:58 +0000 (GMT) [thread overview] Message-ID: <20221104004358.85DF73858409@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=051081585e40a3145028cda8e2a16c010a33ebe9 commit 051081585e40a3145028cda8e2a16c010a33ebe9 Author: Mike Frysinger <vapier@gentoo.org> Date: Thu Nov 3 15:21:12 2022 +0700 sim: build: change AC_CHECK_LIB to AC_SEARCH_LIBS With more C libraries moving functions entirely into the main -lc, change the AC_CHECK_LIB calls to AC_SEARCH_LIBS so we look in there first and avoid extra linkage when possible. Diff: --- sim/config.h.in | 12 --- sim/configure | 235 ++++++++++++++++++++++++++++------------------ sim/m4/sim_ac_platform.m4 | 10 +- 3 files changed, 150 insertions(+), 107 deletions(-) diff --git a/sim/config.h.in b/sim/config.h.in index ba167b36a7c..7c0087fcd0b 100644 --- a/sim/config.h.in +++ b/sim/config.h.in @@ -120,18 +120,6 @@ /* Define to 1 if you have the `kill' function. */ #undef HAVE_KILL -/* Define to 1 if you have the `dl' library (-ldl). */ -#undef HAVE_LIBDL - -/* Define to 1 if you have the `m' library (-lm). */ -#undef HAVE_LIBM - -/* Define to 1 if you have the `nsl' library (-lnsl). */ -#undef HAVE_LIBNSL - -/* Define to 1 if you have the `socket' library (-lsocket). */ -#undef HAVE_LIBSOCKET - /* Define to 1 if you have the `link' function. */ #undef HAVE_LINK diff --git a/sim/configure b/sim/configure index c91cad2e25e..fdb72656466 100755 --- a/sim/configure +++ b/sim/configure @@ -12770,13 +12770,12 @@ CC="$lt_save_CC" -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for bind in -lsocket" >&5 -$as_echo_n "checking for bind in -lsocket... " >&6; } -if ${ac_cv_lib_socket_bind+:} false; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing bind" >&5 +$as_echo_n "checking for library containing bind... " >&6; } +if ${ac_cv_search_bind+:} false; then : $as_echo_n "(cached) " >&6 else - ac_check_lib_save_LIBS=$LIBS -LIBS="-lsocket $LIBS" + ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ @@ -12795,33 +12794,44 @@ return bind (); return 0; } _ACEOF -if ac_fn_c_try_link "$LINENO"; then : - ac_cv_lib_socket_bind=yes -else - ac_cv_lib_socket_bind=no +for ac_lib in '' socket; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_bind=$ac_res fi rm -f core conftest.err conftest.$ac_objext \ - conftest$ac_exeext conftest.$ac_ext -LIBS=$ac_check_lib_save_LIBS + conftest$ac_exeext + if ${ac_cv_search_bind+:} false; then : + break fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_bind" >&5 -$as_echo "$ac_cv_lib_socket_bind" >&6; } -if test "x$ac_cv_lib_socket_bind" = xyes; then : - cat >>confdefs.h <<_ACEOF -#define HAVE_LIBSOCKET 1 -_ACEOF +done +if ${ac_cv_search_bind+:} false; then : - LIBS="-lsocket $LIBS" +else + ac_cv_search_bind=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_bind" >&5 +$as_echo "$ac_cv_search_bind" >&6; } +ac_res=$ac_cv_search_bind +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lnsl" >&5 -$as_echo_n "checking for gethostbyname in -lnsl... " >&6; } -if ${ac_cv_lib_nsl_gethostbyname+:} false; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing gethostbyname" >&5 +$as_echo_n "checking for library containing gethostbyname... " >&6; } +if ${ac_cv_search_gethostbyname+:} false; then : $as_echo_n "(cached) " >&6 else - ac_check_lib_save_LIBS=$LIBS -LIBS="-lnsl $LIBS" + ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ @@ -12840,33 +12850,44 @@ return gethostbyname (); return 0; } _ACEOF -if ac_fn_c_try_link "$LINENO"; then : - ac_cv_lib_nsl_gethostbyname=yes -else - ac_cv_lib_nsl_gethostbyname=no +for ac_lib in '' nsl; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_gethostbyname=$ac_res fi rm -f core conftest.err conftest.$ac_objext \ - conftest$ac_exeext conftest.$ac_ext -LIBS=$ac_check_lib_save_LIBS + conftest$ac_exeext + if ${ac_cv_search_gethostbyname+:} false; then : + break fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_gethostbyname" >&5 -$as_echo "$ac_cv_lib_nsl_gethostbyname" >&6; } -if test "x$ac_cv_lib_nsl_gethostbyname" = xyes; then : - cat >>confdefs.h <<_ACEOF -#define HAVE_LIBNSL 1 -_ACEOF +done +if ${ac_cv_search_gethostbyname+:} false; then : - LIBS="-lnsl $LIBS" +else + ac_cv_search_gethostbyname=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_gethostbyname" >&5 +$as_echo "$ac_cv_search_gethostbyname" >&6; } +ac_res=$ac_cv_search_gethostbyname +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fabs in -lm" >&5 -$as_echo_n "checking for fabs in -lm... " >&6; } -if ${ac_cv_lib_m_fabs+:} false; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing fabs" >&5 +$as_echo_n "checking for library containing fabs... " >&6; } +if ${ac_cv_search_fabs+:} false; then : $as_echo_n "(cached) " >&6 else - ac_check_lib_save_LIBS=$LIBS -LIBS="-lm $LIBS" + ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ @@ -12885,33 +12906,44 @@ return fabs (); return 0; } _ACEOF -if ac_fn_c_try_link "$LINENO"; then : - ac_cv_lib_m_fabs=yes -else - ac_cv_lib_m_fabs=no +for ac_lib in '' m; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_fabs=$ac_res fi rm -f core conftest.err conftest.$ac_objext \ - conftest$ac_exeext conftest.$ac_ext -LIBS=$ac_check_lib_save_LIBS + conftest$ac_exeext + if ${ac_cv_search_fabs+:} false; then : + break fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_fabs" >&5 -$as_echo "$ac_cv_lib_m_fabs" >&6; } -if test "x$ac_cv_lib_m_fabs" = xyes; then : - cat >>confdefs.h <<_ACEOF -#define HAVE_LIBM 1 -_ACEOF +done +if ${ac_cv_search_fabs+:} false; then : - LIBS="-lm $LIBS" +else + ac_cv_search_fabs=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_fabs" >&5 +$as_echo "$ac_cv_search_fabs" >&6; } +ac_res=$ac_cv_search_fabs +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for log2 in -lm" >&5 -$as_echo_n "checking for log2 in -lm... " >&6; } -if ${ac_cv_lib_m_log2+:} false; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing log2" >&5 +$as_echo_n "checking for library containing log2... " >&6; } +if ${ac_cv_search_log2+:} false; then : $as_echo_n "(cached) " >&6 else - ac_check_lib_save_LIBS=$LIBS -LIBS="-lm $LIBS" + ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ @@ -12930,34 +12962,45 @@ return log2 (); return 0; } _ACEOF -if ac_fn_c_try_link "$LINENO"; then : - ac_cv_lib_m_log2=yes -else - ac_cv_lib_m_log2=no +for ac_lib in '' m; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_log2=$ac_res fi rm -f core conftest.err conftest.$ac_objext \ - conftest$ac_exeext conftest.$ac_ext -LIBS=$ac_check_lib_save_LIBS + conftest$ac_exeext + if ${ac_cv_search_log2+:} false; then : + break fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_log2" >&5 -$as_echo "$ac_cv_lib_m_log2" >&6; } -if test "x$ac_cv_lib_m_log2" = xyes; then : - cat >>confdefs.h <<_ACEOF -#define HAVE_LIBM 1 -_ACEOF +done +if ${ac_cv_search_log2+:} false; then : - LIBS="-lm $LIBS" +else + ac_cv_search_log2=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_log2" >&5 +$as_echo "$ac_cv_search_log2" >&6; } +ac_res=$ac_cv_search_log2 +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 -$as_echo_n "checking for dlopen in -ldl... " >&6; } -if ${ac_cv_lib_dl_dlopen+:} false; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dlopen" >&5 +$as_echo_n "checking for library containing dlopen... " >&6; } +if ${ac_cv_search_dlopen+:} false; then : $as_echo_n "(cached) " >&6 else - ac_check_lib_save_LIBS=$LIBS -LIBS="-ldl $LIBS" + ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ @@ -12976,23 +13019,35 @@ return dlopen (); return 0; } _ACEOF -if ac_fn_c_try_link "$LINENO"; then : - ac_cv_lib_dl_dlopen=yes -else - ac_cv_lib_dl_dlopen=no +for ac_lib in '' dl; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $ac_func_search_save_LIBS" + fi + if ac_fn_c_try_link "$LINENO"; then : + ac_cv_search_dlopen=$ac_res fi rm -f core conftest.err conftest.$ac_objext \ - conftest$ac_exeext conftest.$ac_ext -LIBS=$ac_check_lib_save_LIBS + conftest$ac_exeext + if ${ac_cv_search_dlopen+:} false; then : + break fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 -$as_echo "$ac_cv_lib_dl_dlopen" >&6; } -if test "x$ac_cv_lib_dl_dlopen" = xyes; then : - cat >>confdefs.h <<_ACEOF -#define HAVE_LIBDL 1 -_ACEOF +done +if ${ac_cv_search_dlopen+:} false; then : - LIBS="-ldl $LIBS" +else + ac_cv_search_dlopen=no +fi +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dlopen" >&5 +$as_echo "$ac_cv_search_dlopen" >&6; } +ac_res=$ac_cv_search_dlopen +if test "$ac_res" != no; then : + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" fi diff --git a/sim/m4/sim_ac_platform.m4 b/sim/m4/sim_ac_platform.m4 index 92fb00a3d79..74ac7fe14d4 100644 --- a/sim/m4/sim_ac_platform.m4 +++ b/sim/m4/sim_ac_platform.m4 @@ -145,12 +145,12 @@ AC_TYPE_UID_T LT_INIT dnl Libraries. -AC_CHECK_LIB(socket, bind) -AC_CHECK_LIB(nsl, gethostbyname) -AC_CHECK_LIB(m, fabs) -AC_CHECK_LIB(m, log2) +AC_SEARCH_LIBS([bind], [socket]) +AC_SEARCH_LIBS([gethostbyname], [nsl]) +AC_SEARCH_LIBS([fabs], [m]) +AC_SEARCH_LIBS([log2], [m]) -AC_CHECK_LIB(dl, dlopen) +AC_SEARCH_LIBS([dlopen], [dl]) if test "${ac_cv_lib_dl_dlopen}" = "yes"; then PKG_CHECK_MODULES(SDL, sdl2, [dnl SDL_CFLAGS="${SDL_CFLAGS} -DHAVE_SDL=2"
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