--- /dev/null
+dnl AC_CHECK_UCONTEXT: Check whether ucontext are working
+
+dnl it uses AC_RUN and assume the worse while cross-compiling
+
+AC_DEFUN([AC_CHECK_UCONTEXT],
+ [
+AC_MSG_CHECKING([whether ucontext'es exist and are usable...])
+AC_RUN_IFELSE(AC_LANG_PROGRAM([#include <ucontext.h>],
+ [ucontext_t uc;
+ if (getcontext (&uc) != 0) return -1;
+ ]),
+ AC_MSG_RESULT(yes)
+ ac_check_ucontext=yes,
+ AC_MSG_RESULT(no)
+ ac_check_ucontext=no,
+ AC_MSG_RESULT(assuming the worse in cross-compilation)
+ ac_check_ucontext=no)
+])
# Check architecture signature end
GRAS_CHECK_STRUCT_COMPACTION
-AC_ARG_ENABLE(context,
- [ --enable-context=[ucontext/pthread] Use either (System V) swapcontext or pthread [[default=pthread]].],,
- enable_context=pthread)
+
+AC_CHECK_UCONTEXT
AC_MSG_CHECKING(on top of what can we build the contexts)
-if test "x$enable_context" = "xucontext"; then
- AC_CHECK_HEADERS([ucontext.h])
- ac_header=ucontext.h
- as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
- if test `eval echo '${'$as_ac_Header'}'` = yes; then
+AC_ARG_WITH(context,
+ [ --with-context=[ucontext/pthread] Use either (System V) swapcontext or pthread [[default=auto]].],,
+ with_context=auto)
+
+case $with_context in
+ ucontext) ;;
+ pthread) ;;
+ auto) with_context=ucontext;;
+ *) AC_MSG_ERROR("--with-context must be either ucontext or pthread") ;;
+esac
+
+if test "x$with_context" = "xucontext" ; then
+ if test "x$ac_check_ucontext" = "xyes"; then
AC_MSG_RESULT(found ucontext.h. Great!)
+ AC_DEFINE([USE_UCONTEXT],1,[Define if we use ucontext or not])
else
ac_header=windows.h
as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
if test `eval echo '${'$as_ac_Header'}'` = yes; then
- AC_MSG_RESULT(you don't have ucontext.h but we provide an alternative for windows so you should be fine.")
+ AC_MSG_RESULT(there is no ucontext on windows, and none is needed.")
else
- AC_MSG_RESULT([[cannot find ucontext. I'm going to try as if you had set --enable-context=pthreads !]])
- enable_context=pthreads
+ AC_MSG_RESULT([[no working ucontext found. Falling back to pthreads]])
+ with_context=pthreads
fi
fi
-else if test "x$enable_context" = "xpthread"; then
+fi
+
+if test "x$with_context" = "xpthread"; then
AC_CHECK_HEADERS([pthread.h])
dnl A C_CHECK_LIB(pthread, pthread_mutex_lock, LIBS="$LIBS -lpthread")
AC_CHECK_LIB(pthread,pthread_create,,
- [AC_MSG_ERROR([[Cannot find pthreads, no way (try --enable-context=ucontext if you haven't already tried).]])])
- AC_DEFINE([USE_PTHREADS],1,[Define if we USE pthreads or not])
+ [AC_MSG_ERROR([[Cannot find pthreads, no way (try --with-context=ucontext if you haven't already tried).]])])
+ AC_DEFINE([USE_PTHREADS],1,[Define if we use pthreads or not])
AC_MSG_RESULT(You have pthreads. Let's use them.)
-else
- AC_MSG_ERROR("--enable-context must be either ucontext or pthread")
-fi fi
+fi
#########################################
## Check for libraries extra-dependencies
* @{
*/
+#ifdef __GNUC__
/** @brief like strdup, but xbt_die() on error */
-static __inline__ char *xbt_strdup(const char *s) {
+static inline char *xbt_strdup(const char *s) {
char *res = NULL;
if (s) {
res=strdup(s);
}
/** @brief like malloc, but xbt_die() on error
@hideinitializer */
-static __inline__ void *xbt_malloc(int n){
+static inline void *xbt_malloc(int n){
void *res=malloc(n);
if (!res)
xbt_die("Memory allocation failed");
/** @brief like malloc, but xbt_die() on error and memset data to 0
@hideinitializer */
-static __inline__ void *xbt_malloc0(int n) {
+static inline void *xbt_malloc0(int n) {
void *res=calloc(n,1);
if (!res)
xbt_die("Memory callocation failed");
/** @brief like realloc, but xbt_die() on error
@hideinitializer */
-static __inline__ void *xbt_realloc(void*p,int s){
+static inline void *xbt_realloc(void*p,int s){
void *res=res;
if (s) {
if (p) {
}
return res;
}
+#else /* non __GNUC__ */
+# define xbt_strdup(s) strdup(s)
+# define xbt_malloc(n) malloc(n)
+# define xbt_malloc0(n) calloc(n,1)
+# define xbt_realloc(p,s) realloc(p,s)
+#endif /* __GNUC__ ? */
+
/** @brief like free
@hideinitializer */
#define xbt_free free /*nothing specific to do here. A poor valgrind replacement?*/