diff options
| author | Eli Zaretskii <eliz@gnu.org> | 2021-05-19 17:42:50 +0300 |
|---|---|---|
| committer | Eli Zaretskii <eliz@gnu.org> | 2021-05-19 17:42:50 +0300 |
| commit | 5e1a8d5654d97d2631ad67ebb88be4d2eec7d408 (patch) | |
| tree | 8c42a8a77255c2767d18cb92e11c038907d72214 /configure.ac | |
| parent | dac694b8bb1e5a31a50215ceee6b064ae7c5001f (diff) | |
| download | emacs-5e1a8d5654d97d2631ad67ebb88be4d2eec7d408.tar.gz | |
Fix the unexec build on GNU/Linux
The unexec build on GNU/Linux must use HYBRID_MALLOC (gmalloc.c) and
sheap.c. This was inadvertently disabled because a configure-time
test for 'sbrk' was moved as side effect of an unrelated change.
* configure.ac: Test for 'sbrk' before using the result in the
decision about SYSTEM_MALLOC and HYBRID_MALLOC.
(HYBRID_MALLOC): Prevent Gnulib from redirecting 'free' to its
replacement 'rpl_free'.
* lib/Makefile.in (not_emacs_OBJECTS): Add mallooc/%.o and free.o.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 3df4359fa72..d35ac6dbd37 100644 --- a/configure.ac +++ b/configure.ac @@ -2273,6 +2273,9 @@ doug_lea_malloc=$emacs_cv_var_doug_lea_malloc hybrid_malloc= system_malloc=yes +dnl This must be before the test of $ac_cv_func_sbrk below. +AC_CHECK_FUNCS_ONCE([sbrk]) + test $with_unexec = yes && case "$opsys" in ## darwin ld insists on the use of malloc routines in the System framework. @@ -2306,6 +2309,9 @@ elif test "$hybrid_malloc" = yes; then GNU_MALLOC_reason=" (only before dumping)" GMALLOC_OBJ=gmalloc.o VMLIMIT_OBJ= + # FIXME: This is to prevent Gnulib from redirecting 'free' to its + # replacement, instead of 'hybrid_free' in gmalloc.c. + gl_cv_func_free_preserves_errno=yes else test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o VMLIMIT_OBJ=vm-limit.o @@ -4677,7 +4683,7 @@ AC_CHECK_HEADERS(valgrind/valgrind.h) AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]]) -AC_CHECK_FUNCS_ONCE([__lsan_ignore_object sbrk]) +AC_CHECK_FUNCS_ONCE([__lsan_ignore_object]) AC_FUNC_FORK |