diff options
Diffstat (limited to 'erts/configure.in')
| -rw-r--r-- | erts/configure.in | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/erts/configure.in b/erts/configure.in index 89b38718d8..30bc1ef000 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -537,6 +537,9 @@ else fi if test "x$GCC" = xyes; then + # Treat certain GCC warnings as errors + LM_TRY_ENABLE_CFLAG([-Werror=return-type], [WERRORFLAGS]) + # until the emulator can handle this, I suggest we turn it off! #WFLAGS="-Wall -Wshadow -Wcast-qual -Wmissing-declarations" WFLAGS="-Wall -Wstrict-prototypes" @@ -559,11 +562,13 @@ if test "x$GCC" = xyes; then CFLAGS=$saved_CFLAGS else WFLAGS="" + WERRORFLAGS="" fi dnl DEBUG_FLAGS is obsolete (I hope) AC_SUBST(DEBUG_FLAGS) AC_SUBST(DEBUG_CFLAGS) AC_SUBST(WFLAGS) +AC_SUBST(WERRORFLAGS) AC_SUBST(CFLAG_RUNTIME_LIBRARY_PATH) AC_CHECK_SIZEOF(void *) # Needed for ARCH and smp checks below @@ -1071,8 +1076,45 @@ fi AC_SUBST(ERTS_BUILD_SMP_EMU) -AC_CHECK_FUNCS([posix_fadvise]) +AC_CHECK_FUNCS([posix_fadvise, fallocate]) +AC_CHECK_HEADERS([linux/falloc.h]) +dnl * Old glibcs have broken posix_fallocate(). Make sure not to use it. +dnl * It may also be broken in AIX. +AC_CACHE_CHECK([whether posix_fallocate() works],i_cv_posix_fallocate_works,[ + AC_TRY_RUN([ + #if !defined(__sun) && !defined(__sun__) + #define _XOPEN_SOURCE 600 + #endif + #include <stdio.h> + #include <stdlib.h> + #include <fcntl.h> + #include <unistd.h> + #if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7)) + possibly broken posix_fallocate + #endif + int main() { + int fd = creat("conftest.temp", 0600); + int ret; + if (-1 == fd) { + perror("creat()"); + return 2; + } + ret = posix_fallocate(fd, 1024, 1024) < 0 ? 1 : 0; + unlink("conftest.temp"); + return ret; + } + ], [ + i_cv_posix_fallocate_works=yes + ], [ + i_cv_posix_fallocate_works=no + ], [ + i_cv_posix_fallocate_works=no + ]) +]) +if test $i_cv_posix_fallocate_works = yes; then + AC_DEFINE(HAVE_POSIX_FALLOCATE,, Define if you have a working posix_fallocate()) +fi # # Figure out if the emulator should use threads. The default is set above @@ -4457,7 +4499,7 @@ dnl needs to be rebuilt. dnl AC_DEFINE_UNQUOTED(ERTS_EMU_CMDLINE_FLAGS, -"$STATIC_CFLAGS $CFLAGS $DEBUG_CFLAGS $EMU_THR_DEFS $DEFS $WFLAGS", +"$STATIC_CFLAGS $CFLAGS $DEBUG_CFLAGS $EMU_THR_DEFS $DEFS $WERRORFLAGS $WFLAGS", [The only reason ERTS_EMU_CMDLINE_FLAGS exists is to force modification of config.h when the emulator command line flags are modified by configure]) dnl ---------------------------------------------------------------------- @@ -4520,6 +4562,10 @@ AH_BOTTOM([ #endif ]) +if test "x$GCC" = xyes; then + CFLAGS="$WERRORFLAGS $CFLAGS" +fi + dnl ---------------------------------------------------------------------- dnl Output the result. dnl ---------------------------------------------------------------------- |