https://bugs.gentoo.org/883413 --- a/dist/aclocal/clock.m4 +++ b/dist/aclocal/clock.m4 @@ -20,12 +20,14 @@ esac # existence to mean the clock really exists. AC_CACHE_CHECK([for clock_gettime monotonic clock], db_cv_clock_monotonic, [ AC_TRY_RUN([ +#include #include -main() { +int main(void) { struct timespec t; return (clock_gettime(CLOCK_MONOTONIC, &t) != 0); }], db_cv_clock_monotonic=yes, db_cv_clock_monotonic=no, AC_TRY_LINK([ +#include #include ], [ struct timespec t; clock_gettime(CLOCK_MONOTONIC, &t); --- a/dist/aclocal/mmap.m4 +++ b/dist/aclocal/mmap.m4 @@ -29,6 +29,7 @@ if test "$mmap_ok" = "yes" ; then * system to system. */ #include + #include #include #include #include @@ -42,13 +43,12 @@ if test "$mmap_ok" = "yes" ; then #define MAP_FAILED (-1) #endif - int catch_sig(sig) - int sig; + void catch_sig(int sig) { exit(1); } - main() { + int main(void) { const char *underlying; unsigned gapsize; char *base; --- a/dist/aclocal/mutex.m4 +++ b/dist/aclocal/mutex.m4 @@ -5,7 +5,7 @@ AC_DEFUN(AM_PTHREADS_SHARED, [ AC_TRY_RUN([ #include #include -main() { +int main(void) { pthread_cond_t cond; pthread_mutex_t mutex; pthread_condattr_t condattr; @@ -49,7 +49,7 @@ AC_DEFUN(AM_PTHREADS_PRIVATE, [ AC_TRY_RUN([ #include #include -main() { +int main(void) { pthread_cond_t cond; pthread_mutex_t mutex; pthread_condattr_t condattr; @@ -89,7 +89,7 @@ AC_DEFUN(AM_PTHREADS_CONDVAR_DUPINITCHK, [ AC_TRY_RUN([ #include #include -main() { +int main(void) { pthread_cond_t cond; pthread_condattr_t condattr; exit(pthread_condattr_init(&condattr) || @@ -110,7 +110,7 @@ AC_DEFUN(AM_PTHREADS_RWLOCKVAR_DUPINITCHK, [ AC_TRY_RUN([ #include #include -main() { +int main(void) { pthread_rwlock_t rwlock; pthread_rwlockattr_t rwlockattr; exit(pthread_rwlockattr_init(&rwlockattr) || @@ -227,6 +227,7 @@ if test "$db_cv_mutex" = no; then # LWP threads: _lwp_XXX if test "$db_cv_mutex" = no; then AC_TRY_LINK([ + #include #include ],[ static lwp_mutex_t mi = SHAREDMUTEX; static lwp_cond_t ci = SHAREDCV; @@ -243,6 +244,7 @@ if test "$db_cv_mutex" = no; then LIBS="$LIBS -lthread" AC_TRY_LINK([ #include + #include #include ],[ mutex_t mutex; cond_t cond; @@ -258,6 +260,7 @@ if test "$db_cv_mutex" = no; then if test "$db_cv_mutex" = no -o "$db_cv_mutex" = ui_only; then AC_TRY_LINK([ #include + #include #include ],[ mutex_t mutex; cond_t cond; @@ -282,7 +285,7 @@ if test "$db_cv_mutex" = no; then # x86/gcc: FreeBSD, NetBSD, BSD/OS, Linux AC_TRY_COMPILE(,[ #if (defined(i386) || defined(__i386__)) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -291,7 +294,7 @@ if test "$db_cv_mutex" = no; then # x86_64/gcc: FreeBSD, NetBSD, BSD/OS, Linux AC_TRY_COMPILE(,[ #if (defined(x86_64) || defined(__x86_64__)) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -314,7 +317,7 @@ if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__sparc__) && defined(__GNUC__) asm volatile ("membar #StoreStore|#StoreLoad|#LoadStore"); - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -356,7 +359,7 @@ AC_TRY_LINK([ msem_init(&x, 0); msem_lock(&x, 0); msem_unlock(&x, 0); - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -373,7 +376,7 @@ AC_TRY_LINK([ msem_init(&x, 0); msem_lock(&x, 0); msem_unlock(&x, 0); - exit(0); + return 0; ], [db_cv_mutex=UNIX/msem_init]) fi @@ -395,7 +398,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__USLC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -452,7 +455,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__alpha) && defined(__DECC) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -463,7 +466,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__alpha) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -474,7 +477,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__arm__) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -485,7 +488,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if (defined(__mips) || defined(__mips__)) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -496,7 +499,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if (defined(__hppa) || defined(__hppa__)) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -507,7 +510,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if (defined(__powerpc__) || defined(__ppc__)) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -518,7 +521,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if (defined(mc68020) || defined(sun3)) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -529,7 +532,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__MVS__) && defined(__IBMC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -540,7 +543,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__s390__) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -551,7 +554,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(__ia64) && defined(__GNUC__) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -562,7 +565,7 @@ fi if test "$db_cv_mutex" = no; then AC_TRY_COMPILE(,[ #if defined(_UTS) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -910,9 +913,9 @@ fi if test "$db_cv_atomic" = no; then AC_TRY_COMPILE(,[ #if ((defined(i386) || defined(__i386__)) && defined(__GNUC__)) - exit(0); + return 0; #elif ((defined(x86_64) || defined(__x86_64__)) && defined(__GNUC__)) - exit(0); + return 0; #else FAIL TO COMPILE/LINK #endif @@ -921,6 +924,7 @@ fi if test "$db_cv_atomic" = no; then AC_TRY_LINK([ +#include #include ],[ volatile unsigned val = 1; exit (atomic_inc_uint_nv(&val) != 2 || --- a/dist/aclocal/sequence.m4 +++ b/dist/aclocal/sequence.m4 @@ -43,7 +43,9 @@ AC_DEFUN(AM_SEQUENCE_CONFIGURE, [ # test, which won't test for the appropriate printf format strings. if test "$db_cv_build_sequence" = "yes"; then AC_TRY_RUN([ - main() { + #include + #include + int main(void) { $db_cv_seq_type l; unsigned $db_cv_seq_type u; char buf@<:@100@:>@; @@ -59,7 +61,10 @@ AC_DEFUN(AM_SEQUENCE_CONFIGURE, [ return (1); return (0); }],, [db_cv_build_sequence="no"], - AC_TRY_LINK(,[ + AC_TRY_LINK([ + #include + #include + ],[ $db_cv_seq_type l; unsigned $db_cv_seq_type u; char buf@<:@100@:>@; --- a/dist/aclocal/types.m4 +++ b/dist/aclocal/types.m4 @@ -69,7 +69,7 @@ AC_SUBST(stdint_h_decl) AC_MSG_CHECKING(for stdint.h) AC_COMPILE_IFELSE([AC_LANG_SOURCE([ #include - int main() { + int main(void) { uint_least8_t x=0; return x; }])],[AC_MSG_RESULT(yes) @@ -77,7 +77,7 @@ if test "$db_cv_cxx" = "yes"; then AC_MSG_CHECKING([if stdint.h can be used by C++]) AC_LANG_PUSH(C++) AC_COMPILE_IFELSE([AC_LANG_SOURCE([#include - int main() { + int main(void) { uint_least8_t x=0; return x; }])],[AC_MSG_RESULT(yes)