0033-gcc-go-link-to-libucontext.patch (3033B)
1 From ecc2a2e70e44fa76a75b12d0893bc1702b72a1b4 Mon Sep 17 00:00:00 2001 2 From: Ian Lance Taylor <iant@golang.org> 3 Date: Mon, 19 Dec 2022 10:37:06 -0800 4 Subject: [PATCH] libgo: check for makecontext in -lucontext 5 MIME-Version: 1.0 6 Content-Type: text/plain; charset=UTF-8 7 Content-Transfer-Encoding: 8bit 8 9 Patch from Sören Tempel. 10 11 Change-Id: I74b4052cc7aca19224afd6d9a2739c3fae46b722 12 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/458396 13 Reviewed-by: Cherry Mui <cherryyz@google.com> 14 Reviewed-by: Than McIntosh <thanm@google.com> 15 --- 16 libgo/configure | 57 ++++++++++++++++++++++++++++++++++++++++++++++ 17 libgo/configure.ac | 3 +++ 18 2 files changed, 60 insertions(+) 19 20 diff --git a/libgo/configure b/libgo/configure 21 index 460fdad7..a607dbff 100755 22 --- a/libgo/configure 23 +++ b/libgo/configure 24 @@ -14818,6 +14818,63 @@ fi 25 26 27 28 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing makecontext" >&5 29 +$as_echo_n "checking for library containing makecontext... " >&6; } 30 +if ${ac_cv_search_makecontext+:} false; then : 31 + $as_echo_n "(cached) " >&6 32 +else 33 + ac_func_search_save_LIBS=$LIBS 34 +cat confdefs.h - <<_ACEOF >conftest.$ac_ext 35 +/* end confdefs.h. */ 36 + 37 +/* Override any GCC internal prototype to avoid an error. 38 + Use char because int might match the return type of a GCC 39 + builtin and then its argument prototype would still apply. */ 40 +#ifdef __cplusplus 41 +extern "C" 42 +#endif 43 +char makecontext (); 44 +int 45 +main () 46 +{ 47 +return makecontext (); 48 + ; 49 + return 0; 50 +} 51 +_ACEOF 52 +for ac_lib in '' ucontext; do 53 + if test -z "$ac_lib"; then 54 + ac_res="none required" 55 + else 56 + ac_res=-l$ac_lib 57 + LIBS="-l$ac_lib $ac_func_search_save_LIBS" 58 + fi 59 + if ac_fn_c_try_link "$LINENO"; then : 60 + ac_cv_search_makecontext=$ac_res 61 +fi 62 +rm -f core conftest.err conftest.$ac_objext \ 63 + conftest$ac_exeext 64 + if ${ac_cv_search_makecontext+:} false; then : 65 + break 66 +fi 67 +done 68 +if ${ac_cv_search_makecontext+:} false; then : 69 + 70 +else 71 + ac_cv_search_makecontext=no 72 +fi 73 +rm conftest.$ac_ext 74 +LIBS=$ac_func_search_save_LIBS 75 +fi 76 +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_makecontext" >&5 77 +$as_echo "$ac_cv_search_makecontext" >&6; } 78 +ac_res=$ac_cv_search_makecontext 79 +if test "$ac_res" != no; then : 80 + test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" 81 + 82 +fi 83 + 84 + 85 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing sched_yield" >&5 86 $as_echo_n "checking for library containing sched_yield... " >&6; } 87 if ${ac_cv_search_sched_yield+:} false; then : 88 diff --git a/libgo/configure.ac b/libgo/configure.ac 89 index 09554a37..a59aa091 100644 90 --- a/libgo/configure.ac 91 +++ b/libgo/configure.ac 92 @@ -570,6 +570,9 @@ PTHREAD_LIBS= 93 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread) 94 AC_SUBST(PTHREAD_LIBS) 95 96 +dnl Test if -lucontext is required for makecontext. 97 +AC_SEARCH_LIBS([makecontext], [ucontext]) 98 + 99 dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime. 100 AC_SEARCH_LIBS([sched_yield], [rt]) 101 AC_SEARCH_LIBS([nanosleep], [rt])