| # Process this file with autoconf to produce a configure script, like so: |
| # aclocal && autoconf && autoheader && automake |
| |
| AC_PREREQ(2.64) |
| AC_INIT([GCC Quad-precision Math Library], 0.1,,[libquadmath]) |
| AC_CONFIG_HEADER(config.h) |
| |
| # Gets build, host, target, *_vendor, *_cpu, *_os, etc. |
| # |
| # You will slowly go insane if you do not grok the following fact: when |
| # building this library, the top-level /target/ becomes the library's /host/. |
| # |
| # configure then causes --target to default to --host, exactly like any |
| # other package using autoconf. Therefore, 'target' and 'host' will |
| # always be the same. This makes sense both for native and cross compilers |
| # just think about it for a little while. :-) |
| # |
| # Also, if this library is being configured as part of a cross compiler, the |
| # top-level configure script will pass the "real" host as $with_cross_host. |
| # |
| # Do not delete or change the following two lines. For why, see |
| # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html |
| AC_CANONICAL_SYSTEM |
| ACX_NONCANONICAL_TARGET |
| |
| AM_ENABLE_MULTILIB(, ..) |
| |
| target_alias=${target_alias-$host_alias} |
| AC_SUBST(target_alias) |
| |
| AM_INIT_AUTOMAKE([1.9.0 foreign subdir-objects no-dist -Wall -Wno-override -Werror]) |
| |
| AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
| AC_ARG_ENABLE(version-specific-runtime-libs, |
| AS_HELP_STRING([--enable-version-specific-runtime-libs], |
| [specify that runtime libraries should be installed in a compiler-specific directory]), |
| [case "$enableval" in |
| yes) version_specific_libs=yes ;; |
| no) version_specific_libs=no ;; |
| *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; |
| esac], |
| [version_specific_libs=no]) |
| AC_MSG_RESULT($version_specific_libs) |
| |
| GCC_NO_EXECUTABLES |
| |
| AC_USE_SYSTEM_EXTENSIONS |
| |
| # See if makeinfo has been installed and is modern enough |
| # that we can use it. |
| ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], |
| [GNU texinfo.* \([0-9][0-9.]*\)], |
| [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) |
| AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") |
| |
| ACX_BUGURL([https://gcc.gnu.org/bugs/]) |
| |
| # Configure libtool |
| AM_PROG_LIBTOOL |
| ACX_LT_HOST_FLAGS |
| AC_SUBST(enable_shared) |
| AC_SUBST(enable_static) |
| |
| AM_MAINTAINER_MODE |
| |
| AC_LANG_C |
| # The same as in boehm-gc and libstdc++. Have to borrow it from there. |
| # We must force CC to /not/ be precious variables; otherwise |
| # the wrong, non-multilib-adjusted value will be used in multilibs. |
| # As a side effect, we have to subst CFLAGS ourselves. |
| |
| m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) |
| m4_define([_AC_ARG_VAR_PRECIOUS],[]) |
| AC_PROG_CC |
| m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| |
| AC_SUBST(CFLAGS) |
| |
| AM_PROG_CC_C_O |
| |
| if test "x$GCC" != "xyes"; then |
| AC_MSG_ERROR([libquadmath must be built with GCC]) |
| fi |
| AC_PROG_CPP |
| |
| # Calculate toolexeclibdir |
| # Also toolexecdir, though it's only used in toolexeclibdir |
| case ${version_specific_libs} in |
| yes) |
| # Need the gcc compiler version to know where to install libraries |
| # and header files if --enable-version-specific-runtime-libs option |
| # is selected. |
| toolexecdir='$(libdir)/gcc/$(target_alias)' |
| toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
| ;; |
| no) |
| if test -n "$with_cross_host" && |
| test x"$with_cross_host" != x"no"; then |
| # Install a library built with a cross compiler in tooldir, not libdir. |
| toolexecdir='$(exec_prefix)/$(target_alias)' |
| toolexeclibdir='$(toolexecdir)/lib' |
| else |
| toolexecdir='$(libdir)/gcc-lib/$(target_alias)' |
| toolexeclibdir='$(libdir)' |
| fi |
| multi_os_directory=`$CC -print-multi-os-directory` |
| case $multi_os_directory in |
| .) ;; # Avoid trailing /. |
| *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
| esac |
| ;; |
| esac |
| AC_SUBST(toolexecdir) |
| AC_SUBST(toolexeclibdir) |
| |
| AC_CHECK_HEADERS(fenv.h langinfo.h locale.h wchar.h wctype.h limits.h ctype.h printf.h errno.h) |
| LIBQUAD_CHECK_MATH_H_SIGNGAM |
| |
| # If available, sqrtl and cbrtl speed up the calculation - |
| # but they are not required |
| if test x$gcc_no_link != xyes; then |
| AC_CHECK_LIB([m],[sqrtl],[AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl])]) |
| AC_CHECK_LIB([m],[cbrtl],[AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl])]) |
| AC_CHECK_LIB([m],[feholdexcept],[AC_DEFINE([HAVE_FEHOLDEXCEPT],[1],[libm includes feholdexcept])]) |
| AC_CHECK_LIB([m],[fesetround],[AC_DEFINE([HAVE_FESETROUND],[1],[libm includes fesetround])]) |
| AC_CHECK_LIB([m],[feupdateenv],[AC_DEFINE([HAVE_FEUPDATEENV],[1],[libm includes feupdateenv])]) |
| AC_CHECK_LIB([m],[fesetenv],[AC_DEFINE([HAVE_FESETENV],[1],[libm includes fesetenv])]) |
| AC_CHECK_LIB([m],[fetestexcept],[AC_DEFINE([HAVE_FETESTEXCEPT],[1],[libm includes fetestexcept])]) |
| AC_CHECK_FUNCS(strtoull) |
| else |
| if test "x$ac_cv_lib_m_sqrtl" = x""yes; then |
| AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl]) |
| fi |
| if test "x$ac_cv_lib_m_cbrtl" = x""yes; then |
| AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl]) |
| fi |
| if test "x$ac_cv_lib_m_feholdexcept" = x""yes; then |
| AC_DEFINE([HAVE_FEHOLDEXCEPT],[1],[libm includes feholdexcept]) |
| fi |
| if test "x$ac_cv_lib_m_fesetround" = x""yes; then |
| AC_DEFINE([HAVE_FESETROUND],[1],[libm includes fesetround]) |
| fi |
| if test "x$ac_cv_lib_m_feupdateenv" = x""yes; then |
| AC_DEFINE([HAVE_FEUPDATEENV],[1],[libm includes feupdateenv]) |
| fi |
| if test "x$ac_cv_lib_m_fesetenv" = x""yes; then |
| AC_DEFINE([HAVE_FESETENV],[1],[libm includes fesetenv]) |
| fi |
| if test "x$ac_cv_lib_m_fetestexcept" = x""yes; then |
| AC_DEFINE([HAVE_FETESTEXCEPT],[1],[libm includes fetestexcept]) |
| fi |
| fi |
| |
| # Check for hidden visibility (copied from libssp). |
| saved_CFLAGS="$CFLAGS" |
| CFLAGS="$CFLAGS -Werror" |
| AC_MSG_CHECKING([whether hidden visibility is supported]) |
| AC_TRY_COMPILE([ |
| void __attribute__((visibility ("hidden"))) bar (void) {}],, |
| [quadmath_hidden=yes],[quadmath_hidden=no]) |
| AC_MSG_RESULT($quadmath_hidden) |
| if test x$quadmath_hidden = xyes; then |
| AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported]) |
| fi |
| CFLAGS="$saved_CFLAGS" |
| |
| # Check for symbol versioning (copied from libssp). |
| AC_MSG_CHECKING([whether symbol versioning is supported]) |
| AC_ARG_ENABLE(symvers, |
| AS_HELP_STRING([--disable-symvers], |
| [disable symbol versioning for libquadmath]), |
| quadmath_use_symver=$enableval, |
| quadmath_use_symver=yes) |
| if test "x$quadmath_use_symver" != xno; then |
| if test x$gcc_no_link = xyes; then |
| # If we cannot link, we cannot build shared libraries, so do not use |
| # symbol versioning. |
| quadmath_use_symver=no |
| else |
| save_LDFLAGS="$LDFLAGS" |
| LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" |
| cat > conftest.map <<EOF |
| FOO_1.0 { |
| global: *foo*; bar; local: *; |
| }; |
| EOF |
| AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no]) |
| if test x$quadmath_use_symver = xno; then |
| case "$target_os" in |
| solaris2*) |
| LDFLAGS="$save_LDFLAGS" |
| LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" |
| # Sun ld cannot handle wildcards and treats all entries as undefined. |
| cat > conftest.map <<EOF |
| FOO_1.0 { |
| global: foo; local: *; |
| }; |
| EOF |
| AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no]) |
| ;; |
| esac |
| fi |
| LDFLAGS="$save_LDFLAGS" |
| fi |
| fi |
| AC_MSG_RESULT($quadmath_use_symver) |
| AM_CONDITIONAL(LIBQUAD_USE_SYMVER, [test "x$quadmath_use_symver" != xno]) |
| AM_CONDITIONAL(LIBQUAD_USE_SYMVER_GNU, [test "x$quadmath_use_symver" = xgnu]) |
| AM_CONDITIONAL(LIBQUAD_USE_SYMVER_SUN, [test "x$quadmath_use_symver" = xsun]) |
| |
| AC_CACHE_CHECK([whether __float128 is supported], [libquad_cv_have_float128], |
| [GCC_TRY_COMPILE_OR_LINK([ |
| #if (!defined(_ARCH_PPC)) || defined(__LONG_DOUBLE_IEEE128__) |
| typedef _Complex float __attribute__((mode(TC))) __complex128; |
| #else |
| typedef _Complex float __attribute__((mode(KC))) __complex128; |
| #endif |
| |
| __float128 foo (__float128 x) |
| { |
| |
| __complex128 z1, z2; |
| |
| z1 = x; |
| z2 = x / 7.Q; |
| z2 /= z1; |
| |
| return (__float128) z2; |
| } |
| |
| __float128 bar (__float128 x) |
| { |
| return x * __builtin_huge_valq (); |
| } |
| ],[ |
| foo (1.2Q); |
| bar (1.2Q); |
| ],[ |
| libquad_cv_have_float128=yes |
| ],[ |
| libquad_cv_have_float128=no |
| ])]) |
| AM_CONDITIONAL(BUILD_LIBQUADMATH, [test "x$libquad_cv_have_float128" = xyes]) |
| |
| # Check for printf hook support. |
| AC_MSG_CHECKING([whether printf hooks are supported]) |
| AC_TRY_COMPILE([ |
| #include <printf.h> |
| #include <stdarg.h> |
| #include <stdlib.h> |
| extern void flt128_va (void *, va_list *); |
| extern int flt128_ais (const struct printf_info *, size_t, int *, int *); |
| extern int flt128_printf_fp (FILE *, const struct printf_info *, const void *const *); |
| ],[ |
| int pa_flt128 = register_printf_type (flt128_va); |
| int mod_Q = register_printf_modifier (L"Q"); |
| int res = register_printf_specifier ('f', flt128_printf_fp, flt128_ais); |
| struct printf_info info = { .user = -1 }; |
| ], |
| [quadmath_printf_hooks=yes],[quadmath_printf_hooks=no]) |
| AC_MSG_RESULT($quadmath_printf_hooks) |
| if test x$quadmath_printf_hooks = xyes; then |
| AC_DEFINE([HAVE_PRINTF_HOOKS],[1],[GNU C Library stype printf hooks supported]) |
| fi |
| |
| # Check for whether locale support for quadmath_snprintf or Q printf hooks |
| # should be provided. |
| AC_MSG_CHECKING([whether nl_langinfo should be used]) |
| AC_TRY_COMPILE([#include <langinfo.h>],[ |
| const char *s; |
| s = nl_langinfo (DECIMAL_POINT); |
| s = nl_langinfo (MON_DECIMAL_POINT); |
| s = nl_langinfo (GROUPING); |
| s = nl_langinfo (MON_GROUPING); |
| s = nl_langinfo (THOUSANDS_SEP); |
| s = nl_langinfo (MON_THOUSANDS_SEP); |
| (void) s; |
| ], |
| [quadmath_use_nl_langinfo=yes],[quadmath_use_nl_langinfo=no]) |
| AC_MSG_RESULT($quadmath_use_nl_langinfo) |
| if test x$quadmath_use_nl_langinfo = xyes; then |
| AC_DEFINE([USE_NL_LANGINFO],[1],[whether nl_langinfo should be used]) |
| fi |
| |
| AC_MSG_CHECKING([whether nl_langinfo should be used for wide char locale info]) |
| AC_TRY_COMPILE([#include <langinfo.h>],[ |
| const char *s; |
| s = nl_langinfo (_NL_NUMERIC_DECIMAL_POINT_WC); |
| s = nl_langinfo (_NL_MONETARY_DECIMAL_POINT_WC); |
| s = nl_langinfo (_NL_NUMERIC_THOUSANDS_SEP_WC); |
| s = nl_langinfo (_NL_MONETARY_THOUSANDS_SEP_WC); |
| (void) s; |
| ], |
| [quadmath_use_nl_langinfo_wc=yes],[quadmath_use_nl_langinfo_wc=no]) |
| AC_MSG_RESULT($quadmath_use_nl_langinfo_wc) |
| if test x$quadmath_use_nl_langinfo_wc = xyes; then |
| AC_DEFINE([USE_NL_LANGINFO_WC],[1],[whether nl_langinfo should be used for wide char locale info]) |
| fi |
| |
| AC_MSG_CHECKING([whether localeconv should be used]) |
| AC_TRY_COMPILE([#include <locale.h>],[ |
| const struct lconv *l = localeconv (); |
| const char *s; |
| s = l->decimal_point; |
| s = l->mon_decimal_point; |
| s = l->grouping; |
| s = l->mon_grouping; |
| s = l->thousands_sep; |
| s = l->mon_thousands_sep; |
| (void) s; |
| ], |
| [quadmath_use_localeconv=yes],[quadmath_use_localeconv=no]) |
| AC_MSG_RESULT($quadmath_use_localeconv) |
| if test x$quadmath_use_localeconv = xyes; then |
| AC_DEFINE([USE_LOCALECONV],[1],[whether localeconv should be used]) |
| fi |
| |
| # Check for whether i18n number rewriting support for quadmath_snprintf |
| # or Q printf hooks should be provided. |
| AC_MSG_CHECKING([whether i18n number rewriting support for quadmath_snprintf should be added]) |
| AC_TRY_COMPILE([#include <langinfo.h> |
| #include <limits.h> |
| #include <string.h> |
| #include <wchar.h> |
| #include <wctype.h>],[ |
| const char *s; |
| char decimal[MB_LEN_MAX]; |
| wctrans_t map = wctrans ("to_outpunct"); |
| wint_t wdecimal = towctrans (L'.', map); |
| mbstate_t state; |
| memset (&state, '\0', sizeof (state)); |
| wcrtomb (decimal, wdecimal, &state); |
| s = nl_langinfo (_NL_CTYPE_OUTDIGIT0_MB); |
| s = nl_langinfo (_NL_CTYPE_OUTDIGIT0_WC); |
| s = nl_langinfo (_NL_CTYPE_MB_CUR_MAX); |
| (void) s; |
| ], |
| [quadmath_use_i18n_number_h=yes],[quadmath_use_i18n_number_h=no]) |
| AC_MSG_RESULT($quadmath_use_i18n_number_h) |
| if test x$quadmath_use_i18n_number_h = xyes; then |
| AC_DEFINE([USE_I18N_NUMBER_H],[1],[whether i18n number rewriting can be supported]) |
| fi |
| |
| # Add CET specific flags if CET is enabled |
| GCC_CET_FLAGS(CET_FLAGS) |
| XCFLAGS="$XCFLAGS $CET_FLAGS" |
| AC_SUBST(XCFLAGS) |
| |
| AC_CACHE_SAVE |
| |
| if test ${multilib} = yes; then |
| multilib_arg="--enable-multilib" |
| else |
| multilib_arg= |
| fi |
| |
| |
| # We would like our source tree to be readonly. However when releases or |
| # pre-releases are generated, the flex/bison generated files as well as the |
| # various formats of manuals need to be included along with the rest of the |
| # sources. Therefore we have --enable-generated-files-in-srcdir to do |
| # just that. |
| AC_MSG_CHECKING(generated-files-in-srcdir) |
| AC_ARG_ENABLE(generated-files-in-srcdir, |
| AS_HELP_STRING([--enable-generated-files-in-srcdir], |
| [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]), |
| [case "$enableval" in |
| yes) enable_generated_files_in_srcdir=yes ;; |
| no) enable_generated_files_in_srcdir=no ;; |
| *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; |
| esac], |
| [enable_generated_files_in_srcdir=no]) |
| AC_MSG_RESULT($enable_generated_files_in_srcdir) |
| AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes) |
| |
| # Determine what GCC version number to use in filesystem paths. |
| GCC_BASE_VER |
| |
| AC_CONFIG_FILES(Makefile) |
| AC_OUTPUT |