From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/acinclude.m4 | 3994 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 3994 insertions(+) create mode 100644 gmp-6.3.0/acinclude.m4 (limited to 'gmp-6.3.0/acinclude.m4') diff --git a/gmp-6.3.0/acinclude.m4 b/gmp-6.3.0/acinclude.m4 new file mode 100644 index 0000000..9cf9483 --- /dev/null +++ b/gmp-6.3.0/acinclude.m4 @@ -0,0 +1,3994 @@ +dnl GMP specific autoconf macros + + +dnl Copyright 2000-2006, 2009, 2011, 2013-2018 Free Software Foundation, Inc. +dnl +dnl This file is part of the GNU MP Library. +dnl +dnl The GNU MP Library is free software; you can redistribute it and/or modify +dnl it under the terms of either: +dnl +dnl * the GNU Lesser General Public License as published by the Free +dnl Software Foundation; either version 3 of the License, or (at your +dnl option) any later version. +dnl +dnl or +dnl +dnl * the GNU General Public License as published by the Free Software +dnl Foundation; either version 2 of the License, or (at your option) any +dnl later version. +dnl +dnl or both in parallel, as here. +dnl +dnl The GNU MP Library is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +dnl for more details. +dnl +dnl You should have received copies of the GNU General Public License and the +dnl GNU Lesser General Public License along with the GNU MP Library. If not, +dnl see https://www.gnu.org/licenses/. + + +dnl Some tests use, or must delete, the default compiler output. The +dnl possible filenames are based on what autoconf looks for, namely +dnl +dnl a.out - normal unix style +dnl b.out - i960 systems, including gcc there +dnl a.exe - djgpp +dnl a_out.exe - OpenVMS DEC C called via GNV wrapper (gnv.sourceforge.net) +dnl conftest.exe - various DOS compilers + + +define(IA64_PATTERN, +[[ia64*-*-* | itanium-*-* | itanium2-*-*]]) + +dnl Need to be careful not to match m6811, m6812, m68hc11 and m68hc12, all +dnl of which config.sub accepts. (Though none of which are likely to work +dnl with GMP.) +dnl +define(M68K_PATTERN, +[[m68k-*-* | m68[0-9][0-9][0-9]-*-*]]) + +define(POWERPC64_PATTERN, +[[powerpc64-*-* | powerpc64le-*-* | powerpc620-*-* | powerpc630-*-* | powerpc970-*-* | power[3-9]-*-* | power1[0-9]-*-*]]) + +define(S390_PATTERN, +[[s390-*-* | z900esa-*-* | z990esa-*-* | z9esa-*-* | z1[0-6]esa-*-* | z196esa-*-*]]) + +define(S390X_PATTERN, +[[s390x-*-* | z900-*-* | z990-*-* | z9-*-* | z1[0-6]-*-* | z196-*-*]]) + +define(X86_PATTERN, +[[i?86*-*-* | k[5-8]*-*-* | pentium*-*-* | athlon-*-* | viac3*-*-* | geode*-*-* | atom-*-*]]) + +define(X86_64_PATTERN, +[[athlon64-*-* | k8-*-* | k10-*-* | bobcat-*-* | jaguar*-*-* | bulldozer*-*-* | piledriver*-*-* | steamroller*-*-* | excavator*-*-* | zen*-*-* | pentium4-*-* | atom-*-* | silvermont-*-* | goldmont-*-* | tremont-*-* | core2-*-* | corei*-*-* | x86_64-*-* | nano-*-* | nehalem*-*-* | westmere*-*-* | sandybridge*-*-* | ivybridge*-*-* | haswell*-*-* | broadwell*-*-* | skylake*-*-* | kabylake*-*-* | icelake*-*-* | tigerlake*-*-* | rocketlake*-*-* | alderlake*-*-* | raptorlake*-*-*]]) + +dnl GMP_FAT_SUFFIX(DSTVAR, DIRECTORY) +dnl --------------------------------- +dnl Emit code to set shell variable DSTVAR to the suffix for a fat binary +dnl routine from DIRECTORY. DIRECTORY can be a shell expression like $foo +dnl etc. +dnl +dnl The suffix is directory separators / or \ changed to underscores, and +dnl if there's more than one directory part, then the first is dropped. +dnl +dnl For instance, +dnl +dnl x86 -> x86 +dnl x86/k6 -> k6 +dnl x86/k6/mmx -> k6_mmx + +define(GMP_FAT_SUFFIX, +[[$1=`echo $2 | sed -e '/\//s:^[^/]*/::' -e 's:[\\/]:_:g'`]]) + + +dnl GMP_REMOVE_FROM_LIST(listvar,item) +dnl ---------------------------------- +dnl Emit code to remove any occurrence of ITEM from $LISTVAR. ITEM can be a +dnl shell expression like $foo if desired. + +define(GMP_REMOVE_FROM_LIST, +[remove_from_list_tmp= +for remove_from_list_i in $[][$1]; do + if test $remove_from_list_i = [$2]; then :; + else + remove_from_list_tmp="$remove_from_list_tmp $remove_from_list_i" + fi +done +[$1]=$remove_from_list_tmp +]) + + +dnl GMP_STRIP_PATH(subdir) +dnl ---------------------- +dnl Strip entries */subdir from $path and $fat_path. + +define(GMP_STRIP_PATH, +[GMP_STRIP_PATH_VAR(path, [$1]) +GMP_STRIP_PATH_VAR(fat_path, [$1]) +]) + +define(GMP_STRIP_PATH_VAR, +[tmp_path= +for i in $[][$1]; do + case $i in + */[$2]) ;; + *) tmp_path="$tmp_path $i" ;; + esac +done +[$1]="$tmp_path" +]) + + +dnl GMP_INCLUDE_GMP_H +dnl ----------------- +dnl Expand to the right way to #include gmp-h.in. This must be used +dnl instead of gmp.h, since that file isn't generated until the end of the +dnl configure. +dnl +dnl Dummy value for GMP_LIMB_BITS is enough +dnl for all current configure-time uses of gmp.h. + +define(GMP_INCLUDE_GMP_H, +[[#define __GMP_WITHIN_CONFIGURE 1 /* ignore template stuff */ +#define GMP_NAIL_BITS $GMP_NAIL_BITS +#define GMP_LIMB_BITS 123 +$DEFN_LONG_LONG_LIMB +#include "$srcdir/gmp-h.in"] +]) + + +dnl GMP_HEADER_GETVAL(NAME,FILE) +dnl ---------------------------- +dnl Expand at autoconf time to the value of a "#define NAME" from the given +dnl FILE. The regexps here aren't very rugged, but are enough for gmp. +dnl /dev/null as a parameter prevents a hang if $2 is accidentally omitted. + +define(GMP_HEADER_GETVAL, +[patsubst(patsubst( +esyscmd([grep "^#define $1 " $2 /dev/null 2>/dev/null]), +[^.*$1[ ]+],[]), +[[ + ]*$],[])]) + + +dnl GMP_VERSION +dnl ----------- +dnl The gmp version number, extracted from the #defines in gmp-h.in at +dnl autoconf time. Two digits like 3.0 if patchlevel <= 0, or three digits +dnl like 3.0.1 if patchlevel > 0. + +define(GMP_VERSION, +[GMP_HEADER_GETVAL(__GNU_MP_VERSION,gmp-h.in)[]dnl +.GMP_HEADER_GETVAL(__GNU_MP_VERSION_MINOR,gmp-h.in)[]dnl +.GMP_HEADER_GETVAL(__GNU_MP_VERSION_PATCHLEVEL,gmp-h.in)]) + + +dnl GMP_SUBST_CHECK_FUNCS(func,...) +dnl ------------------------------ +dnl Setup an AC_SUBST of HAVE_FUNC_01 for each argument. + +AC_DEFUN([GMP_SUBST_CHECK_FUNCS], +[m4_if([$1],,, +[_GMP_SUBST_CHECK_FUNCS(ac_cv_func_[$1],HAVE_[]m4_translit([$1],[a-z],[A-Z])_01) +GMP_SUBST_CHECK_FUNCS(m4_shift($@))])]) + +dnl Called: _GMP_SUBST_CHECK_FUNCS(cachevar,substvar) +AC_DEFUN([_GMP_SUBST_CHECK_FUNCS], +[case $[$1] in +yes) AC_SUBST([$2],1) ;; +no) [$2]=0 ;; +esac +]) + + +dnl GMP_SUBST_CHECK_HEADERS(foo.h,...) +dnl ---------------------------------- +dnl Setup an AC_SUBST of HAVE_FOO_H_01 for each argument. + +AC_DEFUN([GMP_SUBST_CHECK_HEADERS], +[m4_if([$1],,, +[_GMP_SUBST_CHECK_HEADERS(ac_cv_header_[]m4_translit([$1],[./],[__]), +HAVE_[]m4_translit([$1],[a-z./],[A-Z__])_01) +GMP_SUBST_CHECK_HEADERS(m4_shift($@))])]) + +dnl Called: _GMP_SUBST_CHECK_HEADERS(cachevar,substvar) +AC_DEFUN([_GMP_SUBST_CHECK_HEADERS], +[case $[$1] in +yes) AC_SUBST([$2],1) ;; +no) [$2]=0 ;; +esac +]) + + +dnl GMP_COMPARE_GE(A1,B1, A2,B2, ...) +dnl --------------------------------- +dnl Compare two version numbers A1.A2.etc and B1.B2.etc. Set +dnl $gmp_compare_ge to yes or no according to the result. The A parts +dnl should be variables, the B parts fixed numbers. As many parts as +dnl desired can be included. An empty string in an A part is taken to be +dnl zero, the B parts should be non-empty and non-zero. +dnl +dnl For example, +dnl +dnl GMP_COMPARE($major,10, $minor,3, $subminor,1) +dnl +dnl would test whether $major.$minor.$subminor is greater than or equal to +dnl 10.3.1. + +AC_DEFUN([GMP_COMPARE_GE], +[gmp_compare_ge=no +GMP_COMPARE_GE_INTERNAL($@) +]) + +AC_DEFUN([GMP_COMPARE_GE_INTERNAL], +[ifelse(len([$3]),0, +[if test -n "$1" && test "$1" -ge $2; then + gmp_compare_ge=yes +fi], +[if test -n "$1"; then + if test "$1" -gt $2; then + gmp_compare_ge=yes + else + if test "$1" -eq $2; then + GMP_COMPARE_GE_INTERNAL(m4_shift(m4_shift($@))) + fi + fi +fi]) +]) + + +dnl GMP_PROG_AR +dnl ----------- +dnl GMP additions to $AR. +dnl +dnl A cross-"ar" may be necessary when cross-compiling since the build +dnl system "ar" might try to interpret the object files to build a symbol +dnl table index, hence the use of AC_CHECK_TOOL. +dnl +dnl A user-selected $AR is always left unchanged. AC_CHECK_TOOL is still +dnl run to get the "checking" message printed though. +dnl +dnl If extra flags are added to AR, then ac_cv_prog_AR and +dnl ac_cv_prog_ac_ct_AR are set too, since libtool (cvs 2003-03-31 at +dnl least) will do an AC_CHECK_TOOL and that will AR from one of those two +dnl cached variables. (ac_cv_prog_AR is used if there's an ac_tool_prefix, +dnl or ac_cv_prog_ac_ct_AR is used otherwise.) FIXME: This is highly +dnl dependent on autoconf internals, perhaps it'd work to put our extra +dnl flags into AR_FLAGS instead. +dnl +dnl $AR_FLAGS is set to "cq" rather than leaving it to libtool "cru". The +dnl latter fails when libtool goes into piecewise mode and is unlucky +dnl enough to have two same-named objects in separate pieces, as happens +dnl for instance to random.o (and others) on vax-dec-ultrix4.5. Naturally +dnl a user-selected $AR_FLAGS is left unchanged. +dnl +dnl For reference, $ARFLAGS is used by automake (1.8) for its ".a" archive +dnl file rules. This doesn't get used by the piecewise linking, so we +dnl leave it at the default "cru". +dnl +dnl FIXME: Libtool 1.5.2 has its own arrangements for "cq", but that version +dnl is broken in other ways. When we can upgrade, remove the forcible +dnl AR_FLAGS=cq. + +AC_DEFUN([GMP_PROG_AR], +[dnl Want to establish $AR before libtool initialization. +AC_BEFORE([$0],[AC_PROG_LIBTOOL]) +gmp_user_AR=$AR +AC_CHECK_TOOL(AR, ar, ar) +if test -z "$gmp_user_AR"; then + eval arflags=\"\$ar${abi1}_flags\" + test -n "$arflags" || eval arflags=\"\$ar${abi2}_flags\" + if test -n "$arflags"; then + AC_MSG_CHECKING([for extra ar flags]) + AR="$AR $arflags" + ac_cv_prog_AR="$AR $arflags" + ac_cv_prog_ac_ct_AR="$AR $arflags" + AC_MSG_RESULT([$arflags]) + fi +fi +if test -z "$AR_FLAGS"; then + AR_FLAGS=cq +fi +]) + + +dnl GMP_PROG_M4 +dnl ----------- +dnl Find a working m4, either in $PATH or likely locations, and setup $M4 +dnl and an AC_SUBST accordingly. If $M4 is already set then it's a user +dnl choice and is accepted with no checks. GMP_PROG_M4 is like +dnl AC_PATH_PROG or AC_CHECK_PROG, but tests each m4 found to see if it's +dnl good enough. +dnl +dnl See mpn/asm-defs.m4 for details on the known bad m4s. + +AC_DEFUN([GMP_PROG_M4], +[AC_ARG_VAR(M4,[m4 macro processor]) +AC_CACHE_CHECK([for suitable m4], + gmp_cv_prog_m4, +[if test -n "$M4"; then + gmp_cv_prog_m4="$M4" +else + cat >conftest.m4 <<\EOF +dnl Must protect this against being expanded during autoconf m4! +dnl Dont put "dnl"s in this as autoconf will flag an error for unexpanded +dnl macros. +[define(dollarhash,``$][#'')ifelse(dollarhash(x),1,`define(t1,Y)', +``bad: $][# not supported (SunOS /usr/bin/m4) +'')ifelse(eval(89),89,`define(t2,Y)', +`bad: eval() doesnt support 8 or 9 in a constant (OpenBSD 2.6 m4) +')ifelse(eval(9,9),10,`define(t3,Y)', +`bad: eval() doesnt support radix in eval (FreeBSD 8.x,9.0,9.1,9.2 m4) +')ifelse(t1`'t2`'t3,YYY,`good +')] +EOF +dnl ' <- balance the quotes for emacs sh-mode + echo "trying m4" >&AC_FD_CC + gmp_tmp_val=`(m4 conftest.m4) 2>&AC_FD_CC` + echo "$gmp_tmp_val" >&AC_FD_CC + if test "$gmp_tmp_val" = good; then + gmp_cv_prog_m4="m4" + else + IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" +dnl $ac_dummy forces splitting on constant user-supplied paths. +dnl POSIX.2 word splitting is done only on the output of word expansions, +dnl not every word. This closes a longstanding sh security hole. + ac_dummy="$PATH:/usr/5bin" + for ac_dir in $ac_dummy; do + test -z "$ac_dir" && ac_dir=. + echo "trying $ac_dir/m4" >&AC_FD_CC + gmp_tmp_val=`($ac_dir/m4 conftest.m4) 2>&AC_FD_CC` + echo "$gmp_tmp_val" >&AC_FD_CC + if test "$gmp_tmp_val" = good; then + gmp_cv_prog_m4="$ac_dir/m4" + break + fi + done + IFS="$ac_save_ifs" + if test -z "$gmp_cv_prog_m4"; then + AC_MSG_ERROR([No usable m4 in \$PATH or /usr/5bin (see config.log for reasons).]) + fi + fi + rm -f conftest.m4 +fi]) +M4="$gmp_cv_prog_m4" +AC_SUBST(M4) +]) + + +dnl GMP_M4_M4WRAP_SPURIOUS +dnl ---------------------- +dnl Check for spurious output from m4wrap(), as described in mpn/asm-defs.m4. +dnl +dnl The following systems have been seen with the problem. +dnl +dnl - Unicos alpha, but its assembler doesn't seem to mind. +dnl - MacOS X Darwin, its assembler fails. +dnl - NetBSD 1.4.1 m68k, and gas 1.92.3 there gives a warning and ignores +dnl the bad last line since it doesn't have a newline. +dnl - NetBSD 1.4.2 alpha, but its assembler doesn't seem to mind. +dnl - HP-UX ia64. +dnl +dnl Enhancement: Maybe this could be in GMP_PROG_M4, and attempt to prefer +dnl an m4 with a working m4wrap, if it can be found. + +AC_DEFUN([GMP_M4_M4WRAP_SPURIOUS], +[AC_REQUIRE([GMP_PROG_M4]) +AC_CACHE_CHECK([if m4wrap produces spurious output], + gmp_cv_m4_m4wrap_spurious, +[# hide the d-n-l from autoconf's error checking +tmp_d_n_l=d""nl +cat >conftest.m4 <&AC_FD_CC +cat conftest.m4 >&AC_FD_CC +tmp_chars=`$M4 conftest.m4 | wc -c` +echo produces $tmp_chars chars output >&AC_FD_CC +rm -f conftest.m4 +if test $tmp_chars = 0; then + gmp_cv_m4_m4wrap_spurious=no +else + gmp_cv_m4_m4wrap_spurious=yes +fi +]) +GMP_DEFINE_RAW(["define(,<$gmp_cv_m4_m4wrap_spurious>)"]) +]) + + +dnl GMP_PROG_NM +dnl ----------- +dnl GMP additions to libtool AC_PROG_NM. +dnl +dnl Note that if AC_PROG_NM can't find a working nm it still leaves +dnl $NM set to "nm", so $NM can't be assumed to actually work. +dnl +dnl A user-selected $NM is always left unchanged. AC_PROG_NM is still run +dnl to get the "checking" message printed though. +dnl +dnl Perhaps it'd be worthwhile checking that nm works, by running it on an +dnl actual object file. For instance on sparcv9 solaris old versions of +dnl GNU nm don't recognise 64-bit objects. Checking would give a better +dnl error message than just a failure in later tests like GMP_ASM_W32 etc. +dnl +dnl On the other hand it's not really normal autoconf practice to take too +dnl much trouble over detecting a broken set of tools. And libtool doesn't +dnl do anything at all for say ranlib or strip. So for now we're inclined +dnl to just demand that the user provides a coherent environment. + +AC_DEFUN([GMP_PROG_NM], +[dnl Make sure we're the first to call AC_PROG_NM, so our extra flags are +dnl used by everyone. +AC_BEFORE([$0],[AC_PROG_NM]) +gmp_user_NM=$NM +AC_PROG_NM + +# FIXME: When cross compiling (ie. $ac_tool_prefix not empty), libtool +# defaults to plain "nm" if a "${ac_tool_prefix}nm" is not found. In this +# case run it again to try the native "nm", firstly so that likely locations +# are searched, secondly so that -B or -p are added if necessary for BSD +# format. This is necessary for instance on OSF with "./configure +# --build=alphaev5-dec-osf --host=alphaev6-dec-osf". +# +if test -z "$gmp_user_NM" && test -n "$ac_tool_prefix" && test "$NM" = nm; then + $as_unset lt_cv_path_NM + gmp_save_ac_tool_prefix=$ac_tool_prefix + ac_tool_prefix= + NM= + AC_PROG_NM + ac_tool_prefix=$gmp_save_ac_tool_prefix +fi + +if test -z "$gmp_user_NM"; then + eval nmflags=\"\$nm${abi1}_flags\" + test -n "$nmflags" || eval nmflags=\"\$nm${abi2}_flags\" + if test -n "$nmflags"; then + AC_MSG_CHECKING([for extra nm flags]) + NM="$NM $nmflags" + AC_MSG_RESULT([$nmflags]) + fi +fi +]) + + +dnl GMP_PROG_CC_WORKS(cc+cflags,[ACTION-IF-WORKS][,ACTION-IF-NOT-WORKS]) +dnl -------------------------------------------------------------------- +dnl Check if cc+cflags can compile and link. +dnl +dnl This test is designed to be run repeatedly with different cc+cflags +dnl selections, so the result is not cached. +dnl +dnl For a native build, meaning $cross_compiling == no, we require that the +dnl generated program will run. This is the same as AC_PROG_CC does in +dnl _AC_COMPILER_EXEEXT_WORKS, and checking here will ensure we don't pass +dnl a CC/CFLAGS combination that it rejects. +dnl +dnl sparc-*-solaris2.7 can compile ABI=64 but won't run it if the kernel +dnl was booted in 32-bit mode. The effect of requiring the compiler output +dnl will run is that a plain native "./configure" falls back on ABI=32, but +dnl ABI=64 is still available as a cross-compile. +dnl +dnl The various specific problems we try to detect are done in separate +dnl compiles. Although this is probably a bit slower than one test +dnl program, it makes it easy to indicate the problem in AC_MSG_RESULT, +dnl hence giving the user a clue about why we rejected the compiler. + +AC_DEFUN([GMP_PROG_CC_WORKS], +[AC_MSG_CHECKING([compiler $1]) +gmp_prog_cc_works=yes + +# first see a simple "main()" works, then go on to other checks +GMP_PROG_CC_WORKS_PART([$1], []) + +GMP_PROG_CC_WORKS_PART([$1], [function pointer return], +[/* The following provokes an internal error from gcc 2.95.2 -mpowerpc64 + (without -maix64), hence detecting an unusable compiler */ +void *g() { return (void *) 0; } +void *f() { return g(); } +]) + +GMP_PROG_CC_WORKS_PART([$1], [cmov instruction], +[/* The following provokes an invalid instruction syntax from i386 gcc + -march=pentiumpro on Solaris 2.8. The native sun assembler + requires a non-standard syntax for cmov which gcc (as of 2.95.2 at + least) doesn't know. */ +int n; +int cmov () { return (n >= 0 ? n : 0); } +]) + +GMP_PROG_CC_WORKS_PART([$1], [double -> ulong conversion], +[/* The following provokes a linker invocation problem with gcc 3.0.3 + on AIX 4.3 under "-maix64 -mpowerpc64 -mcpu=630". The -mcpu=630 + option causes gcc to incorrectly select the 32-bit libgcc.a, not + the 64-bit one, and consequently it misses out on the __fixunsdfdi + helper (double -> uint64 conversion). */ +double d; +unsigned long gcc303 () { return (unsigned long) d; } +]) + +GMP_PROG_CC_WORKS_PART([$1], [double negation], +[/* The following provokes an error from hppa gcc 2.95 under -mpa-risc-2-0 if + the assembler doesn't know hppa 2.0 instructions. fneg is a 2.0 + instruction, and a negation like this comes out using it. */ +double fneg_data; +unsigned long fneg () { return -fneg_data; } +]) + +GMP_PROG_CC_WORKS_PART([$1], [double -> float conversion], +[/* The following makes gcc 3.3 -march=pentium4 generate an SSE2 xmm insn + (cvtsd2ss) which will provoke an error if the assembler doesn't recognise + those instructions. Not sure how much of the gmp code will come out + wanting sse2, but it's easiest to reject an option we know is bad. */ +double ftod_data; +float ftod () { return (float) ftod_data; } +]) + +GMP_PROG_CC_WORKS_PART([$1], [gnupro alpha ev6 char spilling], +[/* The following provokes an internal compiler error from gcc version + "2.9-gnupro-99r1" under "-O2 -mcpu=ev6", apparently relating to char + values being spilled into floating point registers. The problem doesn't + show up all the time, but has occurred enough in GMP for us to reject + this compiler+flags. */ +#include /* for memcpy */ +struct try_t +{ + char dst[2]; + char size; + long d0, d1, d2, d3, d4, d5, d6; + char overlap; +}; +struct try_t param[6]; +int +param_init () +{ + struct try_t *p; + memcpy (p, ¶m[ 2 ], sizeof (*p)); + memcpy (p, ¶m[ 2 ], sizeof (*p)); + p->size = 2; + memcpy (p, ¶m[ 1 ], sizeof (*p)); + p->dst[0] = 1; + p->overlap = 2; + memcpy (p, ¶m[ 3 ], sizeof (*p)); + p->dst[0] = 1; + p->overlap = 8; + memcpy (p, ¶m[ 4 ], sizeof (*p)); + memcpy (p, ¶m[ 4 ], sizeof (*p)); + p->overlap = 8; + memcpy (p, ¶m[ 5 ], sizeof (*p)); + memcpy (p, ¶m[ 5 ], sizeof (*p)); + memcpy (p, ¶m[ 5 ], sizeof (*p)); + return 0; +} +]) + +# __builtin_alloca is not available everywhere, check it exists before +# seeing that it works +GMP_PROG_CC_WORKS_PART_TEST([$1],[__builtin_alloca availability], +[int k; int foo () { __builtin_alloca (k); }], + [GMP_PROG_CC_WORKS_PART([$1], [alloca array], +[/* The following provokes an internal compiler error from Itanium HP-UX cc + under +O2 or higher. We use this sort of code in mpn/generic/mul_fft.c. */ +int k; +int foo () +{ + int i, **a; + a = __builtin_alloca (k); + for (i = 0; i <= k; i++) + a[i] = __builtin_alloca (1 << i); +} +])]) + +GMP_PROG_CC_WORKS_PART([$1], [abs int -> double conversion], +[/* The following provokes an internal error from the assembler on + power2-ibm-aix4.3.1.0. gcc -mrios2 compiles to nabs+fcirz, and this + results in "Internal error related to the source program domain". + + For reference it seems to be the combination of nabs+fcirz which is bad, + not either alone. This sort of thing occurs in mpz/get_str.c with the + way double chars_per_bit_exactly is applied in MPN_SIZEINBASE. Perhaps + if that code changes to a scaled-integer style then we won't need this + test. */ + +double fp[1]; +int x; +int f () +{ + int a; + a = (x >= 0 ? x : -x); + return a * fp[0]; +} +]) + +GMP_PROG_CC_WORKS_PART([$1], [long long reliability test 1], +[/* The following provokes a segfault in the compiler on powerpc-apple-darwin. + Extracted from tests/mpn/t-iord_u.c. Causes Apple's gcc 3.3 build 1640 and + 1666 to segfault with e.g., -O2 -mpowerpc64. */ + +#if defined (__GNUC__) && ! defined (__cplusplus) +typedef unsigned long long t1;typedef t1*t2; +void g(){} +void h(){} +static __inline__ t1 e(t2 rp,t2 up,int n,t1 v0) +{t1 c,x,r;int i;if(v0){c=1;for(i=1;i> tnc; + high_limb = low_limb << cnt; + for (i = n - 1; i != 0; i--) + { + low_limb = *up++; + *rp++ = ~(high_limb | (low_limb >> tnc)); + high_limb = low_limb << cnt; + } + return retval; +} +int +main () +{ + unsigned long cy, rp[2], up[2]; + up[0] = ~ 0L; + up[1] = 0; + cy = lshift_com (rp, up, 2L, 1); + if (cy != 1L) + return 1; + return 0; +} +#else +int +main () +{ + return 0; +} +#endif +]) + +GMP_PROG_CC_WORKS_PART_MAIN([$1], [mpn_lshift_com optimization 2], +[/* The following is mis-compiled by Intel ia-64 icc version 1.8 under + "icc -O3", After several calls, the function writes partial garbage to + the result vector. Perhaps relates to the chk.a.nc insn. This code needs + to be run to show the problem, but that's fine, the offending cc is a + native-only compiler so we don't have to worry about cross compiling. */ + +#if ! defined (__cplusplus) +#include +void +lshift_com (rp, up, n, cnt) + unsigned long *rp; + unsigned long *up; + long n; + unsigned cnt; +{ + unsigned long high_limb, low_limb; + unsigned tnc; + long i; + up += n; + rp += n; + tnc = 8 * sizeof (unsigned long) - cnt; + low_limb = *--up; + high_limb = low_limb << cnt; + for (i = n - 1; i != 0; i--) + { + low_limb = *--up; + *--rp = ~(high_limb | (low_limb >> tnc)); + high_limb = low_limb << cnt; + } + *--rp = ~high_limb; +} +int +main () +{ + unsigned long *r, *r2; + unsigned long a[88 + 1]; + long i; + for (i = 0; i < 88 + 1; i++) + a[i] = ~0L; + r = calloc (10000, sizeof (unsigned long)); + r2 = r; + for (i = 0; i < 528; i += 23) + { + lshift_com (r2, a, + i / (8 * sizeof (unsigned long)) + 1, + i % (8 * sizeof (unsigned long))); + r2 += 88 + 1; + } + if (r[2048] != 0 || r[2049] != 0 || r[2050] != 0 || r[2051] != 0 || + r[2052] != 0 || r[2053] != 0 || r[2054] != 0) + abort (); + free (r); + return 0; +} +#else +int +main () +{ + return 0; +} +#endif +]) + + +# A certain _GLOBAL_OFFSET_TABLE_ problem in past versions of gas, tickled +# by recent versions of gcc. +# +if test "$gmp_prog_cc_works" = yes; then + case $host in + X86_PATTERN) + # this problem only arises in PIC code, so don't need to test when + # --disable-shared. We don't necessarily have $enable_shared set to + # yes at this point, it will still be unset for the default (which is + # yes); hence the use of "!= no". + if test "$enable_shared" != no; then + GMP_PROG_CC_X86_GOT_EAX_EMITTED([$1], + [GMP_ASM_X86_GOT_EAX_OK([$1],, + [gmp_prog_cc_works="no, bad gas GOT with eax"])]) + fi + ;; + esac +fi + +AC_MSG_RESULT($gmp_prog_cc_works) +case $gmp_prog_cc_works in + yes) + [$2] + ;; + *) + [$3] + ;; +esac +]) + +dnl Called: GMP_PROG_CC_WORKS_PART(CC+CFLAGS,FAIL-MESSAGE [,CODE]) +dnl A dummy main() is appended to the CODE given. +dnl +AC_DEFUN([GMP_PROG_CC_WORKS_PART], +[GMP_PROG_CC_WORKS_PART_MAIN([$1],[$2], +[$3] +[int main () { return 0; }]) +]) + +dnl Called: GMP_PROG_CC_WORKS_PART_MAIN(CC+CFLAGS,FAIL-MESSAGE,CODE) +dnl CODE must include a main(). +dnl +AC_DEFUN([GMP_PROG_CC_WORKS_PART_MAIN], +[GMP_PROG_CC_WORKS_PART_TEST([$1],[$2],[$3], + [], + gmp_prog_cc_works="no[]m4_if([$2],,,[[, ]])[$2]", + gmp_prog_cc_works="no[]m4_if([$2],,,[[, ]])[$2][[, program does not run]]") +]) + +dnl Called: GMP_PROG_CC_WORKS_PART_TEST(CC+CFLAGS,TITLE,[CODE], +dnl [ACTION-GOOD],[ACTION-BAD][ACTION-NORUN]) +dnl +AC_DEFUN([GMP_PROG_CC_WORKS_PART_TEST], +[if test "$gmp_prog_cc_works" = yes; then + # remove anything that might look like compiler output to our "||" expression + rm -f conftest* a.out b.out a.exe a_out.exe + cat >conftest.c <&AC_FD_CC + gmp_compile="$1 conftest.c >&AC_FD_CC" + if AC_TRY_EVAL(gmp_compile); then + cc_works_part=yes + if test "$cross_compiling" = no; then + if AC_TRY_COMMAND([./a.out || ./b.out || ./a.exe || ./a_out.exe || ./conftest]); then :; + else + cc_works_part=norun + fi + fi + else + cc_works_part=no + fi + if test "$cc_works_part" != yes; then + echo "failed program was:" >&AC_FD_CC + cat conftest.c >&AC_FD_CC + fi + rm -f conftest* a.out b.out a.exe a_out.exe + case $cc_works_part in + yes) + $4 + ;; + no) + $5 + ;; + norun) + $6 + ;; + esac +fi +]) + + +dnl GMP_PROG_CC_WORKS_LONGLONG(cc+cflags,[ACTION-YES][,ACTION-NO]) +dnl -------------------------------------------------------------- +dnl Check that cc+cflags accepts "long long". +dnl +dnl This test is designed to be run repeatedly with different cc+cflags +dnl selections, so the result is not cached. + +AC_DEFUN([GMP_PROG_CC_WORKS_LONGLONG], +[AC_MSG_CHECKING([compiler $1 has long long]) +cat >conftest.c <&AC_FD_CC + cat conftest.c >&AC_FD_CC +fi +rm -f conftest* a.out b.out a.exe a_out.exe +AC_MSG_RESULT($gmp_prog_cc_works) +if test $gmp_prog_cc_works = yes; then + ifelse([$2],,:,[$2]) +else + ifelse([$3],,:,[$3]) +fi +]) + + +dnl GMP_C_TEST_SIZEOF(cc/cflags,test,[ACTION-GOOD][,ACTION-BAD]) +dnl ------------------------------------------------------------ +dnl The given cc/cflags compiler is run to check the size of a type +dnl specified by the "test" argument. "test" can either be a string, or a +dnl variable like $foo. The value should be for instance "sizeof-long-4", +dnl to test that sizeof(long)==4. +dnl +dnl This test is designed to be run for different compiler and/or flags +dnl combinations, so the result is not cached. +dnl +dnl The idea for making an array that has a negative size if the desired +dnl condition test is false comes from autoconf AC_CHECK_SIZEOF. The cast +dnl to "long" in the array dimension also follows autoconf, apparently it's +dnl a workaround for a HP compiler bug. + +AC_DEFUN([GMP_C_TEST_SIZEOF], +[echo "configure: testlist $2" >&AC_FD_CC +[gmp_sizeof_type=`echo "$2" | sed 's/sizeof-\([a-z\*]*\).*/\1/'`] +[gmp_sizeof_want=`echo "$2" | sed 's/sizeof-[a-z\*]*-\([0-9]*\).*/\1/'`] +AC_MSG_CHECKING([compiler $1 has sizeof($gmp_sizeof_type)==$gmp_sizeof_want]) +cat >conftest.c <conftest.c <