>From sellcey@mips.com Tue Jun 4 12:49:55 2013
This patch allows me to build libgfortran for a cross-compiling toolchain
using newlib. Currently the checks done by AC_CHECK_FUNCS_ONCE fail with
my toolchain because the compile/link fails due to the configure script not
using the needed linker script in the link command. The check for with_newlib
is how libjava deals with the problem and it fixes my build problems.
My only concern is defining HAVE_STRTOLD, strtold exists in my newlib but
I am not sure if that is true for all newlib builds. I didn't see any
flags that I could easily use to check for long double support in the
libgfortran configure.ac, but it seems to assume that the type exists.
OK to checkin?
Steve Ellcey
sellcey@mips.com
2013-06-04 Steve Ellcey <sellcey@mips.com>
* configure.ac (AC_CHECK_FUNCS_ONCE): Put into if statement.
diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac
index 7d97fed..4a00470 100644
--- a/libgfortran/configure.ac
+++ b/libgfortran/configure.ac
@@ -261,13 +261,27 @@ GCC_HEADER_STDINT(gstdint.h)
AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev])
# Check for library functions.
-AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
-ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \
-alarm access fork execl wait setmode execve pipe dup2 close \
-strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \
-getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \
-readlink getgid getpid getppid getuid geteuid umask getegid \
-secure_getenv __secure_getenv)
+if test "x${with_newlib}" = "xyes"; then + # We are being configured with a cross compiler. AC_REPLACE_FUNCS
+ # may not work correctly, because the compiler may not be able to
+ # link executables.
+ AC_DEFINE(HAVE_MKSTEMP, 1, [Define if you have mkstemp.])
+ AC_DEFINE(HAVE_STRTOF, 1, [Define if you have strtof.])
+ AC_DEFINE(HAVE_STRTOLD, 1, [Define if you have strtold.])
+ AC_DEFINE(HAVE_SNPRINTF, 1, [Define if you have snprintf.])
+ AC_DEFINE(HAVE_STRCASESTR, 1, [Define if you have strcasestr.])
+ AC_DEFINE(HAVE_VSNPRINTF, 1, [Define if you have vsnprintf.])
+ AC_DEFINE(HAVE_LOCALTIME_R, 1, [Define if you have localtime_r.])
+ AC_DEFINE(HAVE_GMTIME_R, 1, [Define if you have gmtime_r.])
+else
+ AC_CHECK_FUNCS_ONCE(getrusage times mkstemp strtof strtold snprintf \
+ ftruncate chsize chdir getlogin gethostname kill link symlink sleep ttyname \
+ alarm access fork execl wait setmode execve pipe dup2 close \
+ strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \
+ getcwd localtime_r gmtime_r getpwuid_r ttyname_r clock_gettime \
+ readlink getgid getpid getppid getuid geteuid umask getegid \
+ secure_getenv __secure_getenv)
+fi
# Check strerror_r, cannot be above as versions with two and three arguments exist
LIBGFOR_CHECK_STRERROR_R