## We like to use C11 and C99 routines when available. This makes
## sure that
## __STDC_VERSION__ is set such that libc includes make them available.
- AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
+ AM_CFLAGS="-std=gnu11 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-function-declaration -Werror=vla"
## Compile the following tests with the same system header contents
## that we'll encounter when compiling our own source files.
CFLAGS="-std=gnu11 $CFLAGS"
AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
AM_CONDITIONAL(LIBGFOR_USE_SYMVER_SUN, [test "x$gfortran_use_symver" = xsun])
+# For GPU offloading, not everything in libfortran can be supported.
+# Currently, the only target that has this problem is nvptx. The
+# following is a (partial) list of features that are unsupportable on
+# this particular target:
+# * Constructors
+# * alloca
+# * C library support for I/O, with printf as the one notable exception
+# * C library support for other features such as signal, environment
+# variables, time functions
+
+AM_CONDITIONAL(LIBGFOR_MINIMAL, [test "x${target_cpu}" = xnvptx])
+
# Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
# similarly to how libstdc++ does it
ac_test_CFLAGS="${CFLAGS+set}"
AC_MSG_RESULT($ac_fdsections)
AC_SUBST(SECTION_FLAGS)
+# Check linker hardware capability support.
+GCC_CHECK_LINKER_HWCAP
+
# Find other programs we need.
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
# check header files (we assume C89 is available, so don't check for that)
AC_CHECK_HEADERS_ONCE(unistd.h sys/time.h sys/times.h sys/resource.h \
sys/types.h sys/stat.h sys/wait.h floatingpoint.h ieeefp.h fenv.h fptrap.h \
-fpxcp.h pwd.h complex.h)
+fpxcp.h pwd.h complex.h xlocale.h)
GCC_HEADER_STDINT(gstdint.h)
AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct stat.st_rdev])
+case "${host}--x${with_newlib}" in
+ mips*--xyes)
+ hardwire_newlib=1;;
+ nvptx*--xyes)
+ hardwire_newlib=1;;
+esac
+
# Check for library functions.
-if test "x${with_newlib}" = "xyes"; then
+if test "${hardwire_newlib:-0}" -eq 1; 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_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.])
+ AC_DEFINE(HAVE_STRNLEN, 1, [Define if you have strnlen.])
+ AC_DEFINE(HAVE_STRNDUP, 1, [Define if you have strndup.])
# At some point, we should differentiate between architectures
# like x86, which have long double versions, and alpha/powerpc/etc.,
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 fcntl \
- strcasestr getrlimit gettimeofday stat fstat lstat getpwuid vsnprintf dup \
+ alarm access fork setmode fcntl \
+ 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 mkostemp strnlen strndup)
+ getgid getpid getuid geteuid umask getegid \
+ secure_getenv __secure_getenv mkostemp strnlen strndup newlocale \
+ freelocale uselocale strerror_l)
fi
# Check strerror_r, cannot be above as versions with two and three arguments exist
GCC_CHECK_MATH_FUNC([nextafterl])
GCC_CHECK_MATH_FUNC([powf])
GCC_CHECK_MATH_FUNC([pow])
-GCC_CHECK_MATH_FUNC([powl])
GCC_CHECK_MATH_FUNC([cpowf])
GCC_CHECK_MATH_FUNC([cpow])
GCC_CHECK_MATH_FUNC([cpowl])
GCC_CHECK_MATH_FUNC([truncl])
GCC_CHECK_MATH_FUNC([erff])
GCC_CHECK_MATH_FUNC([erf])
-GCC_CHECK_MATH_FUNC([erfl])
GCC_CHECK_MATH_FUNC([erfcf])
GCC_CHECK_MATH_FUNC([erfc])
GCC_CHECK_MATH_FUNC([erfcl])
GCC_CHECK_MATH_FUNC([j0f])
GCC_CHECK_MATH_FUNC([j0])
-GCC_CHECK_MATH_FUNC([j0l])
GCC_CHECK_MATH_FUNC([j1f])
GCC_CHECK_MATH_FUNC([j1])
-GCC_CHECK_MATH_FUNC([j1l])
GCC_CHECK_MATH_FUNC([jnf])
GCC_CHECK_MATH_FUNC([jn])
GCC_CHECK_MATH_FUNC([jnl])
GCC_CHECK_MATH_FUNC([y0f])
GCC_CHECK_MATH_FUNC([y0])
-GCC_CHECK_MATH_FUNC([y0l])
GCC_CHECK_MATH_FUNC([y1f])
GCC_CHECK_MATH_FUNC([y1])
-GCC_CHECK_MATH_FUNC([y1l])
GCC_CHECK_MATH_FUNC([ynf])
GCC_CHECK_MATH_FUNC([yn])
GCC_CHECK_MATH_FUNC([ynl])
GCC_CHECK_MATH_FUNC([tgamma])
GCC_CHECK_MATH_FUNC([tgammaf])
-GCC_CHECK_MATH_FUNC([tgammal])
GCC_CHECK_MATH_FUNC([lgamma])
GCC_CHECK_MATH_FUNC([lgammaf])
-GCC_CHECK_MATH_FUNC([lgammal])
# Check for GFORTRAN_C99_1.1 funcs
GCC_CHECK_MATH_FUNC([cacos])
# Check for SysV fpsetmask
LIBGFOR_CHECK_FPSETMASK
-AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[#include <ieeefp.h>]])
-AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[#include <ieeefp.h>]])
+AC_CHECK_TYPES([fp_except,fp_except_t], [], [], [[
+#ifdef HAVE_IEEEFP_H
+#include <ieeefp.h>
+#endif
+#include <math.h>
+]])
+AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[
+#ifdef HAVE_IEEEFP_H
+#include <ieeefp.h>
+#endif
+#include <math.h>
+]])
+
+# Check whether we have fpsetsticky or fpresetsticky
+AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])])
+AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])])
# Check for AIX fp_trap and fp_enable
AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
+# Check if _SOFT_FLOAT is defined
+AC_CHECK_DEFINE([_SOFT_FLOAT],[have_soft_float=yes])
+
# Runs configure.host to set up necessary host-dependent shell variables.
# We then display a message about it, and propagate them through the
# build chain.
. ${srcdir}/configure.host
AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
+AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}])
FPU_HOST_HEADER=config/${fpu_host}.h
AC_SUBST(FPU_HOST_HEADER)
+# Whether we will build the IEEE modules
+AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes])
+AC_SUBST(IEEE_SUPPORT)
+
# Some targets require additional compiler options for IEEE compatibility.
IEEE_FLAGS="${ieee_flags}"
AC_SUBST(IEEE_FLAGS)
# Check out attribute support.
LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY
-LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT
LIBGFOR_CHECK_ATTRIBUTE_ALIAS
# Check out sync builtins support.
# Check out #pragma weak.
LIBGFOR_GTHREAD_WEAK
+# Check out weakref support.
+LIBGFOR_CHECK_WEAKREF
+
# Various other checks on target
LIBGFOR_CHECK_UNLINK_OPEN_FILE
# Check whether line terminator is LF or CRLF
LIBGFOR_CHECK_CRLF
-# Check whether we have _Unwind_GetIPInfo for backtrace
-GCC_CHECK_UNWIND_GETIPINFO
+# Check whether we support AVX extensions
+LIBGFOR_CHECK_AVX
+
+# Check wether we support AVX2 extensions
+LIBGFOR_CHECK_AVX2
+
+# Check wether we support AVX512f extensions
+LIBGFOR_CHECK_AVX512F
+
+# Check for FMA3 extensions
+LIBGFOR_CHECK_FMA3
+
+# Check for FMA4 extensions
+LIBGFOR_CHECK_FMA4
+
+# Check if AVX128 works
+LIBGFOR_CHECK_AVX128
+
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
AC_CACHE_SAVE