Chris@19: dnl Process this file with autoconf to produce a configure script.
Chris@19: 
Chris@19: dnl Define the fftw version number as M4 macros, so that we can enforce
Chris@19: dnl the invariant that the minor version number in FFTW-X.Y.MINOR is the same
Chris@19: dnl as the revision number in SHARED_VERSION_INFO.
Chris@19: define(FFTW_MAJOR_VERSION, 3.3)dnl
Chris@19: define(FFTW_MINOR_VERSION, 4)dnl
Chris@19: 
Chris@19: dnl Version number of the FFTW source package.
Chris@19: AC_INIT(fftw, FFTW_MAJOR_VERSION.FFTW_MINOR_VERSION, fftw@fftw.org)
Chris@19: AC_CONFIG_SRCDIR(kernel/ifftw.h)
Chris@19: 
Chris@19: dnl Version number for libtool shared libraries.  Libtool wants a string
Chris@19: dnl of the form CURRENT:REVISION:AGE.  We adopt the convention that
Chris@19: dnl REVISION is the same as the FFTW minor version number.
Chris@19: dnl fftw-3.1.x was 4:x:1
Chris@19: dnl fftw-3.2.x was 5:x:2
Chris@19: dnl fftw-3.3.x was 6:x:3 for x < 4 and 7:x:4 for x >= 4
Chris@19: SHARED_VERSION_INFO="7:FFTW_MINOR_VERSION:4" # CURRENT:REVISION:AGE
Chris@19: 
Chris@19: AM_INIT_AUTOMAKE(1.7)
Chris@19: AM_CONFIG_HEADER(config.h)
Chris@19: AC_CONFIG_MACRO_DIR([m4])
Chris@19: AM_MAINTAINER_MODE
Chris@19: AC_SUBST(SHARED_VERSION_INFO)
Chris@19: AC_DISABLE_SHARED dnl to hell with shared libraries
Chris@19: AC_CANONICAL_HOST
Chris@19: 
Chris@19: dnl configure options
Chris@19: case "${host_cpu}" in
Chris@19:   powerpc*) have_fma=yes;;
Chris@19:   ia64*) have_fma=yes;;
Chris@19:   hppa*) have_fma=yes;;
Chris@19:   mips64*) have_fma=yes;;
Chris@19:   *) have_fma=no;;
Chris@19: esac
Chris@19: 
Chris@19: AC_ARG_ENABLE(fma, [AC_HELP_STRING([--enable-fma],[enable optimizations for machines with fused multiply-add])], have_fma=$enableval)
Chris@19: if test "$have_fma"x = "yes"x; then
Chris@19: 	AC_DEFINE(HAVE_FMA,1,[Define if you have a machine with fused multiply-add])
Chris@19: fi
Chris@19: 
Chris@19: 
Chris@19: AC_ARG_ENABLE(debug, [AC_HELP_STRING([--enable-debug],[compile fftw with extra runtime checks for debugging])], ok=$enableval, ok=no)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(FFTW_DEBUG,1,[Define to enable extra FFTW debugging code.])
Chris@19: 	debug_malloc=yes
Chris@19: else
Chris@19: 	debug_malloc=no
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(debug-malloc, [AC_HELP_STRING([--enable-debug-malloc],[enable malloc debugging version])], ok=$enableval, ok=$debug_malloc)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(FFTW_DEBUG_MALLOC,1,[Define to enable debugging malloc.])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(debug-alignment, [AC_HELP_STRING([--enable-debug-alignment],[enable alignment debugging hacks])], ok=$enableval, ok=no)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(FFTW_DEBUG_ALIGNMENT,1,[Define to enable alignment debugging hacks.])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(random-estimator, [AC_HELP_STRING([--enable-random-estimator],[enable pseudorandom estimator (debugging hack)])], ok=$enableval, ok=no)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(FFTW_RANDOM_ESTIMATOR,1,[Define to enable pseudorandom estimate planning for debugging.])
Chris@19: 	CHECK_PL_OPTS="--estimate"
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(alloca, [AC_HELP_STRING([--disable-alloca],[disable use of the alloca() function (may be broken on mingw64)])], ok=$enableval, ok=yes)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(FFTW_ENABLE_ALLOCA,1,[Define to enable the use of alloca().])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(single, [AC_HELP_STRING([--enable-single],[compile fftw in single precision])], ok=$enableval, ok=no)
Chris@19: AC_ARG_ENABLE(float, [AC_HELP_STRING([--enable-float],[synonym for --enable-single])], ok=$enableval)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(FFTW_SINGLE,1,[Define to compile in single precision.])
Chris@19: 	AC_DEFINE(BENCHFFT_SINGLE,1,[Define to compile in single precision.])
Chris@19: 	PRECISION=s
Chris@19: else
Chris@19: 	PRECISION=d
Chris@19: fi
Chris@19: AM_CONDITIONAL(SINGLE, test "$ok" = "yes")
Chris@19: 
Chris@19: AC_ARG_ENABLE(long-double, [AC_HELP_STRING([--enable-long-double],[compile fftw in long-double precision])], ok=$enableval, ok=no)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	if test "$PRECISION" = "s"; then
Chris@19: 		AC_MSG_ERROR([--enable-single/--enable-long-double conflict])
Chris@19: 	fi
Chris@19: 	AC_DEFINE(FFTW_LDOUBLE,1,[Define to compile in long-double precision.])
Chris@19: 	AC_DEFINE(BENCHFFT_LDOUBLE,1,[Define to compile in long-double precision.])
Chris@19: 	PRECISION=l
Chris@19: fi
Chris@19: AM_CONDITIONAL(LDOUBLE, test "$ok" = "yes")
Chris@19: 
Chris@19: AC_ARG_ENABLE(quad-precision, [AC_HELP_STRING([--enable-quad-precision],[compile fftw in quadruple precision if available])], ok=$enableval, ok=no)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	if test "$PRECISION" != "d"; then
Chris@19: 		AC_MSG_ERROR([conflicting precisions specified])
Chris@19: 	fi
Chris@19: 	AC_DEFINE(FFTW_QUAD,1,[Define to compile in quad precision.])
Chris@19: 	AC_DEFINE(BENCHFFT_QUAD,1,[Define to compile in quad precision.])
Chris@19: 	PRECISION=q
Chris@19: fi
Chris@19: AM_CONDITIONAL(QUAD, test "$ok" = "yes")
Chris@19: 
Chris@19: AC_SUBST(PRECISION)
Chris@19: AC_SUBST(CHECK_PL_OPTS)
Chris@19: 
Chris@19: AC_ARG_ENABLE(sse, [AC_HELP_STRING([--enable-sse],[enable SSE optimizations])], have_sse=$enableval, have_sse=no)
Chris@19: if test "$have_sse" = "yes"; then
Chris@19: 	if test "$PRECISION" != "s"; then
Chris@19: 		AC_MSG_ERROR([SSE requires single precision])
Chris@19: 	fi
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(sse2, [AC_HELP_STRING([--enable-sse2],[enable SSE/SSE2 optimizations])], have_sse2=$enableval, have_sse2=no)
Chris@19: if test "$have_sse" = "yes"; then have_sse2=yes; fi
Chris@19: if test "$have_sse2" = "yes"; then
Chris@19: 	AC_DEFINE(HAVE_SSE2,1,[Define to enable SSE/SSE2 optimizations.])
Chris@19: 	if test "$PRECISION" != "d" -a "$PRECISION" != "s"; then
Chris@19: 		AC_MSG_ERROR([SSE2 requires single or double precision])
Chris@19: 	fi
Chris@19: fi
Chris@19: AM_CONDITIONAL(HAVE_SSE2, test "$have_sse2" = "yes")
Chris@19: 
Chris@19: AC_ARG_ENABLE(avx, [AC_HELP_STRING([--enable-avx],[enable AVX optimizations])], have_avx=$enableval, have_avx=no)
Chris@19: if test "$have_avx" = "yes"; then
Chris@19:         AC_DEFINE(HAVE_AVX,1,[Define to enable AVX optimizations.])
Chris@19: 	if test "$PRECISION" != "d" -a "$PRECISION" != "s"; then
Chris@19: 		AC_MSG_ERROR([AVX requires single or double precision])
Chris@19: 	fi
Chris@19: fi
Chris@19: AM_CONDITIONAL(HAVE_AVX, test "$have_avx" = "yes")
Chris@19: 
Chris@19: AC_ARG_ENABLE(altivec, [AC_HELP_STRING([--enable-altivec],[enable Altivec optimizations])], have_altivec=$enableval, have_altivec=no)
Chris@19: if test "$have_altivec" = "yes"; then
Chris@19: 	AC_DEFINE(HAVE_ALTIVEC,1,[Define to enable Altivec optimizations.])
Chris@19: 	if test "$PRECISION" != "s"; then
Chris@19: 		AC_MSG_ERROR([Altivec requires single precision])
Chris@19: 	fi
Chris@19: fi
Chris@19: AM_CONDITIONAL(HAVE_ALTIVEC, test "$have_altivec" = "yes")
Chris@19: 
Chris@19: AC_ARG_ENABLE(neon, [AC_HELP_STRING([--enable-neon],[enable ARM NEON optimizations])], have_neon=$enableval, have_neon=no)
Chris@19: if test "$have_neon" = "yes"; then
Chris@19: 	AC_DEFINE(HAVE_NEON,1,[Define to enable ARM NEON optimizations.])
Chris@19: 	if test "$PRECISION" != "s"; then
Chris@19: 		AC_MSG_ERROR([NEON requires single precision])
Chris@19: 	fi
Chris@19: fi
Chris@19: AM_CONDITIONAL(HAVE_NEON, test "$have_neon" = "yes")
Chris@19: 
Chris@19: dnl FIXME:
Chris@19: dnl AC_ARG_ENABLE(mips-ps, [AC_HELP_STRING([--enable-mips-ps],[enable MIPS pair-single optimizations])], have_mips_ps=$enableval, have_mips_ps=no)
Chris@19: dnl if test "$have_mips_ps" = "yes"; then
Chris@19: dnl 	AC_DEFINE(HAVE_MIPS_PS,1,[Define to enable MIPS paired-single optimizations.])
Chris@19: dnl 	if test "$PRECISION" != "s"; then
Chris@19: dnl 		AC_MSG_ERROR([MIPS paired-single requires single precision])
Chris@19: dnl 	fi
Chris@19: dnl fi
Chris@19: dnl AM_CONDITIONAL(HAVE_MIPS_PS, test "$have_mips_ps" = "yes")
Chris@19: 
Chris@19: AC_ARG_WITH(slow-timer, [AC_HELP_STRING([--with-slow-timer],[use low-precision timers (SLOW)])], with_slow_timer=$withval, with_slow_timer=no)
Chris@19: if test "$with_slow_timer" = "yes"; then
Chris@19: 	AC_DEFINE(WITH_SLOW_TIMER,1,[Use low-precision timers, making planner very slow])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(mips_zbus_timer, [AC_HELP_STRING([--enable-mips-zbus-timer],[use MIPS ZBus cycle-counter])], have_mips_zbus_timer=$enableval, have_mips_zbus_timer=no)
Chris@19: if test "$have_mips_zbus_timer" = "yes"; then
Chris@19: 	AC_DEFINE(HAVE_MIPS_ZBUS_TIMER,1,[Define to enable use of MIPS ZBus cycle-counter.])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_WITH(our-malloc, [AC_HELP_STRING([--with-our-malloc],[use our aligned malloc (helpful for Win32)])], with_our_malloc=$withval, with_our_malloc=no)
Chris@19: AC_ARG_WITH(our-malloc16, [AC_HELP_STRING([--with-our-malloc16],[Obsolete alias for --with-our-malloc16])], with_our_malloc=$withval)
Chris@19: if test "$with_our_malloc" = "yes"; then
Chris@19: 	AC_DEFINE(WITH_OUR_MALLOC,1,[Use our own aligned malloc routine; mainly helpful for Windows systems lacking aligned allocation system-library routines.])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_WITH(windows-f77-mangling, [AC_HELP_STRING([--with-windows-f77-mangling],[use common Win32 Fortran interface styles])], with_windows_f77_mangling=$withval, with_windows_f77_mangling=no)
Chris@19: if test "$with_windows_f77_mangling" = "yes"; then
Chris@19: 	AC_DEFINE(WINDOWS_F77_MANGLING,1,[Use common Windows Fortran mangling styles for the Fortran interfaces.])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_WITH(incoming-stack-boundary, [AC_HELP_STRING([--with-incoming-stack-boundary=X],[Assume that stack is aligned to (1<<X) bytes])], with_incoming_stack_boundary=$withval, with_incoming_stack_boundary=no)
Chris@19: 
Chris@19: dnl compute library suffix
Chris@19: case "$PRECISION" in
Chris@19:      s) PREC_SUFFIX=f;;
Chris@19:      d) PREC_SUFFIX=;;
Chris@19:      l) PREC_SUFFIX=l;;
Chris@19:      q) PREC_SUFFIX=q;;
Chris@19: esac
Chris@19: AC_SUBST(PREC_SUFFIX)
Chris@19: 
Chris@19: dnl Checks for programs.
Chris@19: AC_PROG_CC
Chris@19: AM_PROG_CC_C_O
Chris@19: AX_COMPILER_VENDOR
Chris@19: AC_PROG_CC_STDC
Chris@19: AC_PROG_INSTALL
Chris@19: AC_PROG_LN_S
Chris@19: AC_PROG_MAKE_SET
Chris@19: AC_LIBTOOL_WIN32_DLL
Chris@19: AC_PROG_LIBTOOL
Chris@19: 
Chris@19: AC_CHECK_PROG(OCAMLBUILD, ocamlbuild, ocamlbuild)
Chris@19: 
Chris@19: dnl -----------------------------------------------------------------------
Chris@19: 
Chris@19: AC_ARG_ENABLE(mpi, [AC_HELP_STRING([--enable-mpi],[compile FFTW MPI library])], enable_mpi=$enableval, enable_mpi=no)
Chris@19: 
Chris@19: if test "$enable_mpi" = "yes"; then
Chris@19:    if test $PRECISION = q; then
Chris@19:       AC_MSG_ERROR([quad precision is not supported in MPI])
Chris@19:    fi
Chris@19:    ACX_MPI([],[AC_MSG_ERROR([could not find mpi library for --enable-mpi])])
Chris@19:    AC_CHECK_PROG(MPIRUN, mpirun, mpirun)
Chris@19:    AC_SUBST(MPIRUN)
Chris@19: 
Chris@19:    save_CC=$CC
Chris@19:    CC=$MPICC
Chris@19:    AC_CHECK_SIZEOF(MPI_Fint, [], [#include <mpi.h>])
Chris@19:    CC=$save_CC
Chris@19:    if test 0 = $ac_cv_sizeof_MPI_Fint; then
Chris@19:       AC_MSG_WARN([sizeof(MPI_Fint) test failed]);
Chris@19:       dnl As a backup, assume Fortran integer == C int
Chris@19:       AC_CHECK_SIZEOF(int) 
Chris@19:       if test 0 = $ac_cv_sizeof_int; then AC_MSG_ERROR([sizeof(int) test failed]); fi
Chris@19:       ac_cv_sizeof_MPI_Fint=$ac_cv_sizeof_int
Chris@19:    fi
Chris@19:    C_MPI_FINT=C_INT`expr $ac_cv_sizeof_MPI_Fint \* 8`_T
Chris@19:    AC_SUBST(C_MPI_FINT)
Chris@19: fi
Chris@19: AM_CONDITIONAL(MPI, test "$enable_mpi" = "yes")
Chris@19: 
Chris@19: dnl -----------------------------------------------------------------------
Chris@19: 
Chris@19: dnl determine CFLAGS first
Chris@19: AX_CC_MAXOPT
Chris@19: 
Chris@19: case "${ax_cv_c_compiler_vendor}" in
Chris@19:    intel) # Stop icc from defining __GNUC__, except on MacOS where this fails
Chris@19:         case "${host_os}" in
Chris@19:             *darwin*) ;; # icc -no-gcc fails to compile some system headers
Chris@19:             *) 
Chris@19: 	       AX_CHECK_COMPILER_FLAGS([-no-gcc], [CC="$CC -no-gcc"])
Chris@19:                ;;
Chris@19:         esac
Chris@19:         ;;
Chris@19: 
Chris@19:    hp) # must (sometimes) manually increase cpp limits to handle fftw3.h
Chris@19:         AX_CHECK_COMPILER_FLAGS([-Wp,-H128000],
Chris@19:         		        [CC="$CC -Wp,-H128000"])
Chris@19:         ;;
Chris@19: 
Chris@19:    portland) # -Masmkeyword required for asm("") cycle counters
Chris@19: 	AX_CHECK_COMPILER_FLAGS([-Masmkeyword],
Chris@19:                                 [CC="$CC -Masmkeyword"])
Chris@19:         ;;
Chris@19: esac
Chris@19: 
Chris@19: dnl Determine SIMD CFLAGS at least for gcc and icc
Chris@19: case "${ax_cv_c_compiler_vendor}" in
Chris@19:     gnu|intel)
Chris@19: 	# SSE/SSE2
Chris@19: 	if test "$have_sse2" = "yes" -a "x$SSE2_CFLAGS" = x; then
Chris@19: 	    if test "$PRECISION" = d; then flag=msse2; else flag=msse; fi
Chris@19: 	    AX_CHECK_COMPILER_FLAGS(-$flag, [SSE2_CFLAGS="-$flag"],
Chris@19: 		[AC_MSG_ERROR([Need a version of gcc with -$flag])])
Chris@19: 	fi
Chris@19: 
Chris@19: 	# AVX
Chris@19: 	if test "$have_avx" = "yes" -a "x$AVX_CFLAGS" = x; then
Chris@19: 	    AX_CHECK_COMPILER_FLAGS(-mavx, [AVX_CFLAGS="-mavx"],
Chris@19: 		[AC_MSG_ERROR([Need a version of gcc with -mavx])])
Chris@19: 	fi
Chris@19: 
Chris@19: 	if test "$have_altivec" = "yes" -a "x$ALTIVEC_CFLAGS" = x; then
Chris@19: 	    # -DFAKE__VEC__ is a workaround because gcc-3.3 does not
Chris@19: 	    # #define __VEC__ with -maltivec.
Chris@19: 	    AX_CHECK_COMPILER_FLAGS(-faltivec, [ALTIVEC_CFLAGS="-faltivec"],
Chris@19: 		[AX_CHECK_COMPILER_FLAGS(-maltivec -mabi=altivec,
Chris@19: 		    [ALTIVEC_CFLAGS="-maltivec -mabi=altivec -DFAKE__VEC__"],
Chris@19: 		    [AX_CHECK_COMPILER_FLAGS(-fvec, [ALTIVEC_CFLAGS="-fvec"],
Chris@19: 			[AC_MSG_ERROR([Need a version of gcc with -maltivec])])])])
Chris@19: 	fi
Chris@19: 
Chris@19: 	if test "$have_neon" = "yes" -a "x$NEON_CFLAGS" = x; then
Chris@19: 	    AX_CHECK_COMPILER_FLAGS(-mfpu=neon, [NEON_CFLAGS="-mfpu=neon"],
Chris@19: 		[AC_MSG_ERROR([Need a version of gcc with -mfpu=neon])])
Chris@19: 	fi
Chris@19: 
Chris@19: 	dnl FIXME:
Chris@19: 	dnl elif test "$have_mips_ps" = "yes"; then
Chris@19: 	dnl     # Just punt here and use only new 4.2 compiler :(
Chris@19: 	dnl 	# Should add section for older compilers...
Chris@19: 	dnl 	AX_CHECK_COMPILER_FLAGS(-mpaired-single,
Chris@19: 	dnl 	    [SIMD_CFLAGS="-mpaired-single"],
Chris@19: 	dnl 	    #[AC_MSG_ERROR([Need a version of gcc with -mpaired-single])])
Chris@19: 	dnl 	    [AX_CHECK_COMPILER_FLAGS(-march=mips64,
Chris@19: 	dnl 	      [SIMD_CFLAGS="-march=mips64"],
Chris@19: 	dnl 	        [AC_MSG_ERROR(
Chris@19: 	dnl 		 [Need a version of gcc with -mpaired-single or -march=mips64])
Chris@19: 	dnl 		])])
Chris@19: 	dnl fi
Chris@19: 	;;
Chris@19: esac
Chris@19: 
Chris@19: AC_SUBST(SSE2_CFLAGS)
Chris@19: AC_SUBST(AVX_CFLAGS)
Chris@19: AC_SUBST(ALTIVEC_CFLAGS)
Chris@19: AC_SUBST(NEON_CFLAGS)
Chris@19: 
Chris@19: dnl add stack alignment CFLAGS if so requested
Chris@19: if test "$with_incoming_stack_boundary"x != "no"x; then
Chris@19:    case "${ax_cv_c_compiler_vendor}" in
Chris@19:       gnu)
Chris@19:         tentative_flags="-mincoming-stack-boundary=$with_incoming_stack_boundary";
Chris@19:         AX_CHECK_COMPILER_FLAGS($tentative_flags, 
Chris@19: 	          [STACK_ALIGN_CFLAGS=$tentative_flags])
Chris@19:       ;;
Chris@19:    esac
Chris@19: fi
Chris@19: AC_SUBST(STACK_ALIGN_CFLAGS)
Chris@19: 
Chris@19: dnl Checks for header files.
Chris@19: AC_HEADER_STDC
Chris@19: AC_CHECK_HEADERS([libintl.h malloc.h stddef.h stdlib.h string.h strings.h sys/time.h unistd.h limits.h c_asm.h intrinsics.h stdint.h mach/mach_time.h sys/sysctl.h])
Chris@19: dnl c_asm.h: Header file for enabling asm() on Digital Unix  
Chris@19: dnl intrinsics.h: cray unicos
Chris@19: dnl sys/sysctl.h: MacOS X altivec detection
Chris@19: 
Chris@19: dnl altivec.h requires $ALTIVEC_CFLAGS
Chris@19: save_CFLAGS="$CFLAGS"
Chris@19: save_CPPFLAGS="$CPPFLAGS"
Chris@19: CFLAGS="$CFLAGS $ALTIVEC_CFLAGS"
Chris@19: CPPFLAGS="$CPPFLAGS $ALTIVEC_CFLAGS"
Chris@19: AC_CHECK_HEADERS([altivec.h])
Chris@19: CFLAGS="$save_CFLAGS"
Chris@19: CPPFLAGS="$save_CPPFLAGS"
Chris@19: 
Chris@19: 
Chris@19: dnl Checks for typedefs, structures, and compiler characteristics.
Chris@19: AC_C_CONST
Chris@19: AC_C_INLINE
Chris@19: AC_TYPE_SIZE_T
Chris@19: AC_HEADER_TIME
Chris@19: AC_CHECK_TYPE([long double],
Chris@19:               [AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define to 1 if the compiler supports `long double'])],
Chris@19: [
Chris@19: if test $PRECISION = l; then
Chris@19:     AC_MSG_ERROR([long double is not a supported type with your compiler.])
Chris@19: fi
Chris@19: ])
Chris@19: AC_CHECK_TYPE([hrtime_t],[AC_DEFINE(HAVE_HRTIME_T, 1, [Define to 1 if hrtime_t is defined in <sys/time.h>])],,
Chris@19: [
Chris@19: #if HAVE_SYS_TIME_H
Chris@19: #include <sys/time.h>
Chris@19: #endif
Chris@19: ])
Chris@19: 
Chris@19: AC_CHECK_SIZEOF(int)
Chris@19: AC_CHECK_SIZEOF(unsigned int)
Chris@19: AC_CHECK_SIZEOF(long)
Chris@19: AC_CHECK_SIZEOF(unsigned long)
Chris@19: AC_CHECK_SIZEOF(long long)
Chris@19: AC_CHECK_SIZEOF(unsigned long long)
Chris@19: AC_CHECK_SIZEOF(size_t)
Chris@19: AC_CHECK_SIZEOF(ptrdiff_t)
Chris@19: 
Chris@19: AC_CHECK_TYPES(uintptr_t, [], [AC_CHECK_SIZEOF(void *)], [$ac_includes_default
Chris@19: #ifdef HAVE_STDINT_H
Chris@19: #  include <stdint.h>
Chris@19: #endif])
Chris@19: 
Chris@19: AC_CHECK_SIZEOF(float)
Chris@19: AC_CHECK_SIZEOF(double)
Chris@19: 
Chris@19: dnl Check sizeof fftw_r2r_kind for Fortran interface [it has == sizeof(int)
Chris@19: dnl for years, but being paranoid].  Note: the definition here must match
Chris@19: dnl the one in api/fftw3.h!
Chris@19: AC_CHECK_SIZEOF(fftw_r2r_kind, [], [typedef enum {
Chris@19:      FFTW_R2HC=0, FFTW_HC2R=1, FFTW_DHT=2,
Chris@19:      FFTW_REDFT00=3, FFTW_REDFT01=4, FFTW_REDFT10=5, FFTW_REDFT11=6,
Chris@19:      FFTW_RODFT00=7, FFTW_RODFT01=8, FFTW_RODFT10=9, FFTW_RODFT11=10
Chris@19: } fftw_r2r_kind;])
Chris@19: if test 0 = $ac_cv_sizeof_fftw_r2r_kind; then AC_MSG_ERROR([sizeof(fftw_r2r_kind) test failed]); fi
Chris@19: C_FFTW_R2R_KIND=C_INT`expr $ac_cv_sizeof_fftw_r2r_kind \* 8`_T
Chris@19: AC_SUBST(C_FFTW_R2R_KIND)
Chris@19: 
Chris@19: dnl Checks for library functions.
Chris@19: AC_FUNC_ALLOCA
Chris@19: AC_FUNC_STRTOD
Chris@19: AC_FUNC_VPRINTF
Chris@19: AC_CHECK_LIB(m, sin)
Chris@19: 
Chris@19: if test $PRECISION = q; then
Chris@19:    AX_GCC_VERSION(4,6,0,[],[AC_MSG_ERROR([gcc 4.6 or later required for quad precision support])])
Chris@19:    AC_CHECK_LIB(quadmath, sinq, [], [AC_MSG_ERROR([quad precision requires libquadmath for quad-precision trigonometric routines])])
Chris@19:    LIBQUADMATH=-lquadmath
Chris@19: fi
Chris@19: AC_SUBST(LIBQUADMATH)
Chris@19: 
Chris@19: AC_CHECK_FUNCS([BSDgettimeofday gettimeofday gethrtime read_real_time time_base_to_time drand48 sqrt memset posix_memalign memalign _mm_malloc _mm_free clock_gettime mach_absolute_time sysctl abort sinl cosl snprintf])
Chris@19: AC_CHECK_DECLS([sinl, cosl, sinq, cosq],,,[#include <math.h>])
Chris@19: AC_CHECK_DECLS([memalign],,,[
Chris@19: #ifdef HAVE_MALLOC_H
Chris@19: #include <malloc.h>
Chris@19: #endif])
Chris@19: AC_CHECK_DECLS([drand48, srand48, posix_memalign]) dnl in stdlib.h
Chris@19: 
Chris@19: dnl Cray UNICOS _rtc() (real-time clock) intrinsic
Chris@19: AC_MSG_CHECKING([for _rtc intrinsic])
Chris@19: rtc_ok=yes
Chris@19: AC_TRY_LINK([#ifdef HAVE_INTRINSICS_H
Chris@19: #include <intrinsics.h>
Chris@19: #endif], [_rtc()], [AC_DEFINE(HAVE__RTC,1,[Define if you have the UNICOS _rtc() intrinsic.])], [rtc_ok=no])
Chris@19: AC_MSG_RESULT($rtc_ok)
Chris@19: 
Chris@19: if test "$PRECISION" = "l"; then
Chris@19: 	AC_CHECK_FUNCS([cosl sinl tanl], [], [AC_MSG_ERROR([long-double precision requires long-double trigonometric routines])])
Chris@19: fi
Chris@19: 
Chris@19: AC_MSG_CHECKING([for isnan])
Chris@19: AC_TRY_LINK([#include <math.h>
Chris@19: ], if (!isnan(3.14159)) isnan(2.7183);, ok=yes, ok=no)
Chris@19: if test "$ok" = "yes"; then
Chris@19: 	AC_DEFINE(HAVE_ISNAN,1,[Define if the isnan() function/macro is available.])
Chris@19: fi
Chris@19: AC_MSG_RESULT(${ok})
Chris@19: 
Chris@19: dnl TODO
Chris@19: AX_GCC_ALIGNS_STACK()
Chris@19: 
Chris@19: dnl override CFLAGS selection when debugging
Chris@19: if test "${enable_debug}" = "yes"; then
Chris@19: 	CFLAGS="-g"
Chris@19: fi
Chris@19: 
Chris@19: dnl add gcc warnings, in debug/maintainer mode only
Chris@19: if test "$enable_debug" = yes || test "$USE_MAINTAINER_MODE" = yes; then
Chris@19: if test "$ac_test_CFLAGS" != "set"; then
Chris@19: 	if test $ac_cv_prog_gcc = yes; then
Chris@19: 		CFLAGS="$CFLAGS -Wall -W -Wcast-qual -Wpointer-arith -Wcast-align -pedantic -Wno-long-long -Wshadow -Wbad-function-cast -Wwrite-strings -Wstrict-prototypes -Wredundant-decls -Wnested-externs" # -Wundef -Wconversion -Wmissing-prototypes -Wmissing-declarations 
Chris@19: 	fi
Chris@19: fi
Chris@19: fi
Chris@19: 
Chris@19: dnl -----------------------------------------------------------------------
Chris@19: 
Chris@19: AC_ARG_ENABLE(fortran, [AC_HELP_STRING([--disable-fortran],[don't include Fortran-callable wrappers])], enable_fortran=$enableval, enable_fortran=yes)
Chris@19: 
Chris@19: if test "$enable_fortran" = "yes"; then
Chris@19:         AC_PROG_F77
Chris@19:         if test -z "$F77"; then
Chris@19:                 enable_fortran=no
Chris@19:                 AC_MSG_WARN([*** Couldn't find f77 compiler; using default Fortran wrappers.])
Chris@19: 	else
Chris@19: 		AC_F77_DUMMY_MAIN([], [enable_fortran=no
Chris@19: 			AC_MSG_WARN([*** Couldn't figure out how to link C and Fortran; using default Fortran wrappers.])])
Chris@19:         fi
Chris@19: else
Chris@19: 	AC_DEFINE([DISABLE_FORTRAN], 1, [Define to disable Fortran wrappers.])
Chris@19: fi
Chris@19: 
Chris@19: if test "x$enable_fortran" = xyes; then
Chris@19:         AC_F77_WRAPPERS
Chris@19: 	AC_F77_FUNC(f77foo)
Chris@19: 	AC_F77_FUNC(f77_foo)
Chris@19: 	f77_foo2=`echo $f77foo | sed 's/77/77_/'`
Chris@19: 	if test "$f77_foo" = "$f77_foo2"; then
Chris@19: 		AC_DEFINE(F77_FUNC_EQUIV, 1, [Define if F77_FUNC and F77_FUNC_ are equivalent.])
Chris@19: 
Chris@19: 		# Include g77 wrappers by default for GNU systems or gfortran
Chris@19: 		with_g77_wrappers=$ac_cv_f77_compiler_gnu
Chris@19: 		case $host_os in *gnu*) with_g77_wrappers=yes ;; esac
Chris@19: 	fi
Chris@19: else
Chris@19: 	with_g77_wrappers=no
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_WITH(g77-wrappers, [AC_HELP_STRING([--with-g77-wrappers],[force inclusion of g77-compatible wrappers in addition to any other Fortran compiler that is detected])], with_g77_wrappers=$withval)
Chris@19: if test "x$with_g77_wrappers" = "xyes"; then
Chris@19: 	AC_DEFINE(WITH_G77_WRAPPERS,1,[Include g77-compatible wrappers in addition to any other Fortran wrappers.])
Chris@19: fi
Chris@19: 
Chris@19: dnl -----------------------------------------------------------------------
Chris@19: have_smp="no"
Chris@19: AC_ARG_ENABLE(openmp, [AC_HELP_STRING([--enable-openmp],[use OpenMP directives for parallelism])], enable_openmp=$enableval, enable_openmp=no)
Chris@19: 
Chris@19: if test "$enable_openmp" = "yes"; then
Chris@19:    AC_DEFINE(HAVE_OPENMP,1,[Define to enable OpenMP])
Chris@19:    AX_OPENMP([], [AC_MSG_ERROR([don't know how to enable OpenMP])])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_ENABLE(threads, [AC_HELP_STRING([--enable-threads],[compile FFTW SMP threads library])], enable_threads=$enableval, enable_threads=no)
Chris@19: 
Chris@19: if test "$enable_threads" = "yes"; then
Chris@19:    AC_DEFINE(HAVE_THREADS,1,[Define to enable SMP threads])
Chris@19: fi
Chris@19: 
Chris@19: AC_ARG_WITH(combined-threads, [AC_HELP_STRING([--with-combined-threads],[combine threads into main libfftw3])], with_combined_threads=$withval, with_combined_threads=no)
Chris@19: 
Chris@19: if test "$with_combined_threads" = yes; then
Chris@19:    if test "$enable_openmp" = "yes"; then
Chris@19:       AC_MSG_ERROR([--with-combined-threads incompatible with --enable-openmp])
Chris@19:    fi
Chris@19:    if test "$enable_threads" != "yes"; then
Chris@19:       AC_MSG_ERROR([--with-combined-threads requires --enable-threads])
Chris@19:    fi
Chris@19: fi
Chris@19: 
Chris@19: dnl Check for threads library...
Chris@19: THREADLIBS=""
Chris@19: if test "$enable_threads" = "yes"; then
Chris@19:         # Win32 threads are the default on Windows:
Chris@19: 	if test -z "$THREADLIBS"; then
Chris@19: 		AC_MSG_CHECKING([for Win32 threads])
Chris@19: 		AC_TRY_LINK([#include <windows.h>],
Chris@19: 			[_beginthreadex(0,0,0,0,0,0);],
Chris@19: 			[THREADLIBS=" "; AC_MSG_RESULT(yes)],
Chris@19: 			[AC_MSG_RESULT(no)])
Chris@19: 	fi
Chris@19: 
Chris@19: 	# POSIX threads, the default choice everywhere else:
Chris@19: 	if test -z "$THREADLIBS"; then
Chris@19: 		ACX_PTHREAD([THREADLIBS="$PTHREAD_LIBS "
Chris@19: 	                     CC="$PTHREAD_CC"
Chris@19: 	                     AC_DEFINE(USING_POSIX_THREADS, 1, [Define if we have and are using POSIX threads.])])
Chris@19: 	fi
Chris@19: 
Chris@19: 	if test -z "$THREADLIBS"; then
Chris@19: 		AC_MSG_ERROR([couldn't find threads library for --enable-threads])
Chris@19: 	fi
Chris@19: 	AC_DEFINE(HAVE_THREADS, 1, [Define if we have a threads library.])
Chris@19: fi
Chris@19: AC_SUBST(THREADLIBS)
Chris@19: AM_CONDITIONAL(THREADS, test "$enable_threads" = "yes")
Chris@19: AM_CONDITIONAL(OPENMP, test "$enable_openmp" = "yes")
Chris@19: AM_CONDITIONAL(SMP, test "$enable_threads" = "yes" -o "$enable_openmp" = "yes")
Chris@19: AM_CONDITIONAL(COMBINED_THREADS, test x"$with_combined_threads" = xyes)
Chris@19: 
Chris@19: dnl -----------------------------------------------------------------------
Chris@19: 
Chris@19: AC_MSG_CHECKING([whether a cycle counter is available])
Chris@19: save_CPPFLAGS=$CPPFLAGS
Chris@19: CPPFLAGS="$CPPFLAGS -I$srcdir/kernel"
Chris@19: AC_TRY_CPP([#include "cycle.h"
Chris@19: #ifndef HAVE_TICK_COUNTER
Chris@19: #  error No cycle counter
Chris@19: #endif], [ok=yes], [ok=no])
Chris@19: CPPFLAGS=$save_CPPFLAGS
Chris@19: AC_MSG_RESULT($ok)
Chris@19: if test $ok = no && test "x$with_slow_timer" = xno; then
Chris@19: 	echo "***************************************************************"
Chris@19: 	echo "WARNING: No cycle counter found.  FFTW will use ESTIMATE mode  "
Chris@19: 	echo "         for all plans.  See the manual for more information."
Chris@19: 	echo "***************************************************************"
Chris@19: fi
Chris@19: 
Chris@19: dnl -----------------------------------------------------------------------
Chris@19: 
Chris@19: AC_DEFINE_UNQUOTED(FFTW_CC, "$CC $CFLAGS", [C compiler name and flags])
Chris@19: 
Chris@19: AC_CONFIG_FILES([
Chris@19:    Makefile
Chris@19:    support/Makefile
Chris@19:    genfft/Makefile
Chris@19:    kernel/Makefile
Chris@19:    simd-support/Makefile
Chris@19: 
Chris@19:    dft/Makefile
Chris@19:    dft/scalar/Makefile
Chris@19:    dft/scalar/codelets/Makefile
Chris@19:    dft/simd/Makefile
Chris@19:    dft/simd/common/Makefile
Chris@19:    dft/simd/sse2/Makefile
Chris@19:    dft/simd/avx/Makefile
Chris@19:    dft/simd/altivec/Makefile
Chris@19:    dft/simd/neon/Makefile
Chris@19: 
Chris@19:    rdft/Makefile
Chris@19:    rdft/scalar/Makefile
Chris@19:    rdft/scalar/r2cf/Makefile
Chris@19:    rdft/scalar/r2cb/Makefile
Chris@19:    rdft/scalar/r2r/Makefile
Chris@19:    rdft/simd/Makefile
Chris@19:    rdft/simd/common/Makefile
Chris@19:    rdft/simd/sse2/Makefile
Chris@19:    rdft/simd/avx/Makefile
Chris@19:    rdft/simd/altivec/Makefile
Chris@19:    rdft/simd/neon/Makefile
Chris@19: 
Chris@19:    reodft/Makefile
Chris@19: 
Chris@19:    threads/Makefile
Chris@19: 
Chris@19:    api/Makefile
Chris@19: 
Chris@19:    mpi/Makefile
Chris@19: 
Chris@19:    libbench2/Makefile
Chris@19:    tests/Makefile
Chris@19:    doc/Makefile
Chris@19:    doc/FAQ/Makefile
Chris@19: 
Chris@19:    tools/Makefile
Chris@19:    tools/fftw_wisdom.1
Chris@19:    tools/fftw-wisdom-to-conf
Chris@19: 
Chris@19:    m4/Makefile
Chris@19: 
Chris@19:    fftw.pc
Chris@19: ])
Chris@19: 
Chris@19: AC_OUTPUT