AC_MSG_RESULT(no))])])
])
-dnl
-dnl This function checks for strerror_r(). If it isn't found at first, it
-dnl retries with _THREAD_SAFE defined, as that is what AIX seems to require
-dnl in order to find this function.
-dnl
-dnl If the function is found, it will then proceed to check how the function
-dnl actually works: glibc-style or POSIX-style.
-dnl
-dnl glibc:
-dnl char *strerror_r(int errnum, char *buf, size_t n);
-dnl
-dnl What this one does is to return the error string (no surprises there),
-dnl but it doesn't usually copy anything into buf! The 'buf' and 'n'
-dnl parameters are only meant as an optional working area, in case strerror_r
-dnl needs it. A quick test on a few systems shows that it's generally not
-dnl touched at all.
-dnl
-dnl POSIX:
-dnl int strerror_r(int errnum, char *buf, size_t n);
-dnl
-AC_DEFUN([CURL_CHECK_STRERROR_R],
-[
- AC_CHECK_FUNCS(strerror_r)
-
- if test "x$ac_cv_func_strerror_r" = "xyes"; then
-
- AC_MSG_CHECKING(whether strerror_r is declared)
- AC_EGREP_CPP(strerror_r,[
-#undef _REENTRANT
-#include <string.h>],[
- AC_MSG_RESULT(yes)],[
- AC_MSG_RESULT(no)
- AC_MSG_CHECKING(whether strerror_r with -D_REENTRANT is declared)
- AC_EGREP_CPP(strerror_r,[
-#undef _REENTRANT
-#define _REENTRANT
-#include <string.h>],[
- AC_MSG_RESULT(yes)],
- AC_MSG_RESULT(no)
- AC_DEFINE(HAVE_NO_STRERROR_R_DECL, 1, [we have no strerror_r() proto])
- ) dnl with _THREAD_SAFE
- ]) dnl plain cpp for it
-
- dnl determine if this strerror_r() is glibc or POSIX
- AC_MSG_CHECKING([for a glibc strerror_r API])
- AC_TRY_RUN([
-#include <string.h>
-#include <errno.h>
-int
-main () {
- char buffer[1024]; /* big enough to play with */
- char *string =
- strerror_r(EACCES, buffer, sizeof(buffer));
- /* this should've returned a string */
- if(!string || !string[0])
- return 99;
- return 0;
-}
-],
- GLIBC_STRERROR_R="1"
- AC_DEFINE(HAVE_GLIBC_STRERROR_R, 1, [we have a glibc-style strerror_r()])
- AC_MSG_RESULT([yes]),
- AC_MSG_RESULT([no]),
-
- dnl Use an inferior method of strerror_r detection while cross-compiling
- AC_EGREP_CPP(yes, [
-#include <features.h>
-#ifdef __GLIBC__
-yes
-#endif
-],
- dnl looks like glibc, so assume a glibc-style strerror_r()
- GLIBC_STRERROR_R="1"
- AC_DEFINE(HAVE_GLIBC_STRERROR_R, 1, [we have a glibc-style strerror_r()])
- AC_MSG_RESULT([yes]),
- AC_MSG_NOTICE([cannot determine strerror_r() style: edit lib/config.h manually!])
- ) dnl while cross-compiling
- )
-
- if test -z "$GLIBC_STRERROR_R"; then
-
- AC_MSG_CHECKING([for a POSIX strerror_r API])
- AC_TRY_RUN([
-#include <string.h>
-#include <errno.h>
-int
-main () {
- char buffer[1024]; /* big enough to play with */
- int error =
- strerror_r(EACCES, buffer, sizeof(buffer));
- /* This should've returned zero, and written an error string in the
- buffer.*/
- if(!buffer[0] || error)
- return 99;
- return 0;
-}
-],
- AC_DEFINE(HAVE_POSIX_STRERROR_R, 1, [we have a POSIX-style strerror_r()])
- AC_MSG_RESULT([yes]),
- AC_MSG_RESULT([no]) ,
- dnl cross-compiling!
- AC_MSG_NOTICE([cannot determine strerror_r() style: edit lib/config.h manually!])
- )
-
- fi dnl if not using glibc API
-
- fi dnl we have a strerror_r
-
-])
AC_DEFUN([CURL_CHECK_INET_NTOA_R],
[
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 1
+# serial 5
dnl CURL_INCLUDES_SIGNAL
])
+dnl CURL_INCLUDES_STDIO
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when stdio.h is to be included.
+
+AC_DEFUN([CURL_INCLUDES_STDIO], [
+curl_includes_stdio="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_STDIO_H
+# include <stdio.h>
+#endif
+/* includes end */"
+ AC_CHECK_HEADERS(
+ sys/types.h stdio.h,
+ [], [], [$curl_includes_stdio])
+])
+
+
dnl CURL_INCLUDES_STDLIB
dnl -------------------------------------------------
dnl Set up variable with list of headers that must be
])
+dnl CURL_CHECK_FUNC_FDOPEN
+dnl -------------------------------------------------
+dnl Verify if fdopen is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable curl_disallow_fdopen, then
+dnl HAVE_FDOPEN will be defined.
+
+AC_DEFUN([CURL_CHECK_FUNC_FDOPEN], [
+ AC_REQUIRE([CURL_INCLUDES_STDIO])dnl
+ #
+ tst_links_fdopen="unknown"
+ tst_proto_fdopen="unknown"
+ tst_compi_fdopen="unknown"
+ tst_allow_fdopen="unknown"
+ #
+ AC_MSG_CHECKING([if fdopen can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([fdopen])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_fdopen="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_fdopen="no"
+ ])
+ #
+ if test "$tst_links_fdopen" = "yes"; then
+ AC_MSG_CHECKING([if fdopen is prototyped])
+ AC_EGREP_CPP([fdopen],[
+ $curl_includes_stdio
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_fdopen="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_fdopen="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_fdopen" = "yes"; then
+ AC_MSG_CHECKING([if fdopen is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_stdio
+ ]],[[
+ if(0 != fdopen(0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_fdopen="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_fdopen="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_fdopen" = "yes"; then
+ AC_MSG_CHECKING([if fdopen usage allowed])
+ if test "x$curl_disallow_fdopen" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_fdopen="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_fdopen="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if fdopen might be used])
+ if test "$tst_links_fdopen" = "yes" &&
+ test "$tst_proto_fdopen" = "yes" &&
+ test "$tst_compi_fdopen" = "yes" &&
+ test "$tst_allow_fdopen" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_FDOPEN, 1,
+ [Define to 1 if you have the fdopen function.])
+ ac_cv_func_fdopen="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_fdopen="no"
+ fi
+])
+
+
dnl CURL_CHECK_FUNC_FTRUNCATE
dnl -------------------------------------------------
dnl Verify if ftruncate is available, prototyped, and
])
+dnl CURL_CHECK_FUNC_STRERROR_R
+dnl -------------------------------------------------
+dnl Verify if strerror_r is available, prototyped, can be compiled and
+dnl seems to work. If all of these are true, and usage has not been
+dnl previously disallowed with shell variable curl_disallow_strerror_r,
+dnl then HAVE_GLIBC_STRERROR_R or HAVE_POSIX_STRERROR_R will be defined.
+dnl
+dnl glibc-style strerror_r:
+dnl
+dnl char *strerror_r(int errnum, char *workbuf, size_t bufsize);
+dnl
+dnl glibc-style strerror_r returns a pointer to the the error string,
+dnl and might use the provided workbuf as a scratch area if needed. A
+dnl quick test on a few systems shows that it's usually not used at all.
+dnl
+dnl POSIX-style strerror_r:
+dnl
+dnl int strerror_r(int errnum, char *resultbuf, size_t bufsize);
+dnl
+dnl POSIX-style strerror_r returns 0 upon successful completion and the
+dnl error string in the provided resultbuf.
+dnl
+
+AC_DEFUN([CURL_CHECK_FUNC_STRERROR_R], [
+ AC_REQUIRE([CURL_INCLUDES_STRING])dnl
+ #
+ tst_links_strerror_r="unknown"
+ tst_proto_strerror_r="unknown"
+ tst_compi_strerror_r="unknown"
+ tst_glibc_strerror_r="unknown"
+ tst_posix_strerror_r="unknown"
+ tst_allow_strerror_r="unknown"
+ tst_works_glibc_strerror_r="unknown"
+ tst_works_posix_strerror_r="unknown"
+ #
+ AC_MSG_CHECKING([if strerror_r can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([strerror_r])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_strerror_r="no"
+ ])
+ #
+ if test "$tst_links_strerror_r" = "yes"; then
+ AC_MSG_CHECKING([if strerror_r is prototyped])
+ AC_EGREP_CPP([strerror_r],[
+ $curl_includes_string
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_strerror_r="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_strerror_r" = "yes"; then
+ AC_MSG_CHECKING([if strerror_r is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_string
+ ]],[[
+ if(0 != strerror_r(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_strerror_r="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_strerror_r" = "yes"; then
+ AC_MSG_CHECKING([if strerror_r is glibc like])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_string
+ ]],[[
+ char *strerror_r(int errnum, char *workbuf, size_t bufsize);
+ if(0 != strerror_r(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_glibc_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_glibc_strerror_r="no"
+ ])
+ fi
+ #
+ dnl only do runtime verification when not cross-compiling
+ if test "x$cross_compiling" != "xyes" &&
+ test "$tst_glibc_strerror_r" = "yes"; then
+ AC_MSG_CHECKING([if strerror_r seems to work])
+ AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_string
+# include <errno.h>
+ ]],[[
+ char buffer[1024];
+ char *string = 0;
+ buffer[0] = '\0';
+ string = strerror_r(EACCES, buffer, sizeof(buffer));
+ if(!string)
+ exit(1); /* fail */
+ if(!string[0])
+ exit(1); /* fail */
+ else
+ exit(0);
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_works_glibc_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_works_glibc_strerror_r="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_strerror_r" = "yes" &&
+ test "$tst_works_glibc_strerror_r" != "yes"; then
+ AC_MSG_CHECKING([if strerror_r is POSIX like])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_string
+ ]],[[
+ int strerror_r(int errnum, char *resultbuf, size_t bufsize);
+ if(0 != strerror_r(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_posix_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_posix_strerror_r="no"
+ ])
+ fi
+ #
+ dnl only do runtime verification when not cross-compiling
+ if test "x$cross_compiling" != "xyes" &&
+ test "$tst_posix_strerror_r" = "yes"; then
+ AC_MSG_CHECKING([if strerror_r seems to work])
+ AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_string
+# include <errno.h>
+ ]],[[
+ char buffer[1024];
+ int error = 1;
+ buffer[0] = '\0';
+ error = strerror_r(EACCES, buffer, sizeof(buffer));
+ if(error)
+ exit(1); /* fail */
+ if(buffer[0] == '\0')
+ exit(1); /* fail */
+ else
+ exit(0);
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_works_posix_strerror_r="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_works_posix_strerror_r="no"
+ ])
+ fi
+ #
+ if test "$tst_glibc_strerror_r" = "yes" &&
+ test "$tst_works_glibc_strerror_r" != "no" &&
+ test "$tst_posix_strerror_r" != "yes"; then
+ tst_allow_strerror_r="check"
+ fi
+ if test "$tst_posix_strerror_r" = "yes" &&
+ test "$tst_works_posix_strerror_r" != "no" &&
+ test "$tst_glibc_strerror_r" != "yes"; then
+ tst_allow_strerror_r="check"
+ fi
+ if test "$tst_allow_strerror_r" = "check"; then
+ AC_MSG_CHECKING([if strerror_r usage allowed])
+ if test "x$curl_disallow_strerror_r" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_strerror_r="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_strerror_r="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if strerror_r might be used])
+ if test "$tst_links_strerror_r" = "yes" &&
+ test "$tst_proto_strerror_r" = "yes" &&
+ test "$tst_compi_strerror_r" = "yes" &&
+ test "$tst_allow_strerror_r" = "yes"; then
+ AC_MSG_RESULT([yes])
+ if test "$tst_glibc_strerror_r" = "yes"; then
+ AC_DEFINE_UNQUOTED(HAVE_GLIBC_STRERROR_R, 1,
+ [Define to 1 if you have a working glibc-style strerror_r function.])
+ fi
+ if test "$tst_posix_strerror_r" = "yes"; then
+ AC_DEFINE_UNQUOTED(HAVE_POSIX_STRERROR_R, 1,
+ [Define to 1 if you have a working POSIX-style strerror_r function.])
+ fi
+ ac_cv_func_strerror_r="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_strerror_r="no"
+ fi
+ #
+ if test "$tst_compi_strerror_r" = "yes" &&
+ test "$tst_allow_strerror_r" = "unknown"; then
+ AC_MSG_NOTICE([cannot determine strerror_r() style: edit lib/config.h manually.])
+ fi
+ #
+])
+
+
dnl CURL_CHECK_FUNC_STRTOK_R
dnl -------------------------------------------------
dnl Verify if strtok_r is available, prototyped, and
projects / platform / upstream / curl.git / commitdiff