fish-shell/pcre2-10.21/m4/pcre2_visibility.m4

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Merge new string builtin This adds the new builtin 'string' which supports various string manipulation and matching algorithms, including PCRE based regular expressions. Fixes #2296 Squashed commit of the following: commit 4c3eaeb6e57d76463e9683c327142b0aeafb92b8 Author: ridiculousfish <corydoras@ridiculousfish.com> Date: Sat Sep 12 12:51:30 2015 -0700 Remove testdata and doc dirs from pcre2 source commit b2a8b4b50f2398b204fb72cfe4b5ba77ece2e1ab Merge: 11c8a47 7974aab Author: ridiculousfish <corydoras@ridiculousfish.com> Date: Sat Sep 12 12:32:40 2015 -0700 Merge branch 'string' of git://github.com/msteed/fish-shell into string-test commit 7974aab6d367f999f1140ab34c2535cef5cf3b00 Author: Michael Steed <msteed@saltstack.com> Date: Fri Sep 11 13:00:02 2015 -0600 build pcre2 lib only, no docs commit eb20b43d2d96b7e6d24618158ce71078de83c40b Merge: 1a09e70 5f519cb Author: Michael Steed <msteed68@gmail.com> Date: Thu Sep 10 20:00:47 2015 -0600 Merge branch 'string' of github.com:msteed/fish-shell into string commit 1a09e709d028393c9e9e6dc9a84278f399a15f3d Author: Michael Steed <msteed68@gmail.com> Date: Thu Sep 10 19:58:24 2015 -0600 rebase on master & address the fallout commit a0ec9772cd1a0a548a501a7633be05dab4e5ee46 Author: Michael Steed <msteed68@gmail.com> Date: Thu Sep 10 19:26:45 2015 -0600 use fish's wildcard_match() for glob matching commit 64c25a01e3f7234f220ba13545cf658a7492b1a4 Author: Michael Steed <msteed68@gmail.com> Date: Thu Aug 27 08:19:23 2015 -0600 some fixes from review - string_get_arg_stdin(): simplify and don't discard the argument when the trailing newline is absent - fix calls to pcre2 for e.g. string match -r -a 'a*' 'b' - correct test for args coming from stdin commit ece7f35ec5f4093763627d68d671b6c0c876896d Author: Michael Steed <msteed68@gmail.com> Date: Sat Aug 22 19:35:56 2015 -0600 fixes from review - Makefile.in: restore iwyu target - regex_replacer_t::replace_matches(): correct size passed to realloc() commit 9ff7477a926c4572e26171cab3cd42f8086be678 Author: Michael Steed <msteed68@gmail.com> Date: Thu Aug 20 13:08:33 2015 -0600 Minor doc improvements commit baf4e096b22dde3063b85b833795eb570d660ba7 Author: Michael Steed <msteed68@gmail.com> Date: Wed Aug 19 18:29:02 2015 -0600 another attempt to fix the ci build commit 896a2c2b279a419747bea26102229fbe84534a6f Author: Michael Steed <msteed68@gmail.com> Date: Wed Aug 19 18:03:49 2015 -0600 Updates after review comments - make match/replace without -a operate on the first match on each argument - use different exit codes for "no operation performed" and errors, as grep does - refactor regex compile code - use human-friendly error messages from pcre2 - improve error handling & reporting elsewhere - add a few tests - make some doc fixes - some simplification & cleanup - fix ci build failure (I hope) commit efd47dcbda2ca247d58bee56a7774cd75a1062fd Author: Michael Steed <msteed68@gmail.com> Date: Wed Aug 12 00:26:07 2015 -0600 fix dependencies for parallel make commit ed0850e2db467362066a3d94e3ececd17c1756cd Author: Michael Steed <msteed68@gmail.com> Date: Tue Aug 11 23:37:22 2015 -0600 Add missing pcre2 files + .gitignore commit 9492e7a7e929c03554336be1ddf80ca6b37f53c5 Author: Michael Steed <msteed68@gmail.com> Date: Tue Aug 11 22:44:05 2015 -0600 add pcre2-10.20 and update license.hdr commit 1a60b933718feb20c0bf7c9e257b8e495014ea1b Author: Michael Steed <msteed68@gmail.com> Date: Tue Aug 11 22:41:19 2015 -0600 add string builtin files - string builtin source, tests, & docs - changes to configure.ac & Makefile.in commit 5f519cb2a2c05213e0a88a7add7af288bc1c1352 Author: Michael Steed <msteed68@gmail.com> Date: Thu Sep 10 19:26:45 2015 -0600 use fish's wildcard_match() for glob matching commit 2ecd24f79500879e2de5bdf1b4c19dd44fc6ac85 Author: Michael Steed <msteed68@gmail.com> Date: Thu Aug 27 08:19:23 2015 -0600 some fixes from review - string_get_arg_stdin(): simplify and don't discard the argument when the trailing newline is absent - fix calls to pcre2 for e.g. string match -r -a 'a*' 'b' - correct test for args coming from stdin commit 45b777e4dc85c05cd4a186f4bdcae543c21aaf08 Author: Michael Steed <msteed68@gmail.com> Date: Sat Aug 22 19:35:56 2015 -0600 fixes from review - Makefile.in: restore iwyu target - regex_replacer_t::replace_matches(): correct size passed to realloc() commit 981cbb6ddf742a5fe8881af916e7b870b7e6422a Author: Michael Steed <msteed68@gmail.com> Date: Thu Aug 20 13:08:33 2015 -0600 Minor doc improvements commit ddb6a2a8fdb6aa31aad41e80d5481bb32c6ed8ff Author: Michael Steed <msteed68@gmail.com> Date: Wed Aug 19 18:29:02 2015 -0600 another attempt to fix the ci build commit 1e34e3191b028162863d263e9868052f75194aa5 Author: Michael Steed <msteed68@gmail.com> Date: Wed Aug 19 18:03:49 2015 -0600 Updates after review comments - make match/replace without -a operate on the first match on each argument - use different exit codes for "no operation performed" and errors, as grep does - refactor regex compile code - use human-friendly error messages from pcre2 - improve error handling & reporting elsewhere - add a few tests - make some doc fixes - some simplification & cleanup - fix ci build failure (I hope) commit 34232e152df17a3cfbf0a094dd51d148a4f04e6f Author: Michael Steed <msteed68@gmail.com> Date: Wed Aug 12 00:26:07 2015 -0600 fix dependencies for parallel make commit 00d7e781697f53454beb91c1d0fc4b2d28d6e034 Author: Michael Steed <msteed68@gmail.com> Date: Tue Aug 11 23:37:22 2015 -0600 Add missing pcre2 files + .gitignore commit 4498aa5f576e09634f7f619443e74d2f33c108e4 Author: Michael Steed <msteed68@gmail.com> Date: Tue Aug 11 22:44:05 2015 -0600 add pcre2-10.20 and update license.hdr commit 290c58c72e22db644ccf6fa9088051644980ed0a Author: Michael Steed <msteed68@gmail.com> Date: Tue Aug 11 22:41:19 2015 -0600 add string builtin files - string builtin source, tests, & docs - changes to configure.ac & Makefile.in
2015-09-12 19:59:40 +00:00
# visibility.m4 serial 4 (gettext-0.18.2)
dnl Copyright (C) 2005, 2008, 2010-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
dnl Tests whether the compiler supports the command-line option
dnl -fvisibility=hidden and the function and variable attributes
dnl __attribute__((__visibility__("hidden"))) and
dnl __attribute__((__visibility__("default"))).
dnl Does *not* test for __visibility__("protected") - which has tricky
dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
dnl MacOS X.
dnl Does *not* test for __visibility__("internal") - which has processor
dnl dependent semantics.
dnl Does *not* test for #pragma GCC visibility push(hidden) - which is
dnl "really only recommended for legacy code".
dnl Set the variable CFLAG_VISIBILITY.
dnl Defines and sets the variable HAVE_VISIBILITY.
dnl Modified to fit with PCRE build environment by Cristian Rodríguez.
dnl Adjusted for PCRE2 by PH
AC_DEFUN([PCRE2_VISIBILITY],
[
AC_REQUIRE([AC_PROG_CC])
VISIBILITY_CFLAGS=
VISIBILITY_CXXFLAGS=
HAVE_VISIBILITY=0
if test -n "$GCC"; then
dnl First, check whether -Werror can be added to the command line, or
dnl whether it leads to an error because of some other option that the
dnl user has put into $CC $CFLAGS $CPPFLAGS.
AC_MSG_CHECKING([whether the -Werror option is usable])
AC_CACHE_VAL([pcre2_cv_cc_vis_werror], [
pcre2_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[]], [[]])],
[pcre2_cv_cc_vis_werror=yes],
[pcre2_cv_cc_vis_werror=no])
CFLAGS="$pcre2_save_CFLAGS"])
AC_MSG_RESULT([$pcre2_cv_cc_vis_werror])
dnl Now check whether visibility declarations are supported.
AC_MSG_CHECKING([for simple visibility declarations])
AC_CACHE_VAL([pcre2_cv_cc_visibility], [
pcre2_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
dnl We use the option -Werror and a function dummyfunc, because on some
dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
dnl "visibility attribute not supported in this configuration; ignored"
dnl at the first function definition in every compilation unit, and we
dnl don't want to use the option in this case.
if test $pcre2_cv_cc_vis_werror = yes; then
CFLAGS="$CFLAGS -Werror"
fi
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[extern __attribute__((__visibility__("hidden"))) int hiddenvar;
extern __attribute__((__visibility__("default"))) int exportedvar;
extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
extern __attribute__((__visibility__("default"))) int exportedfunc (void);
void dummyfunc (void) {}
]],
[[]])],
[pcre2_cv_cc_visibility=yes],
[pcre2_cv_cc_visibility=no])
CFLAGS="$pcre2_save_CFLAGS"])
AC_MSG_RESULT([$pcre2_cv_cc_visibility])
if test $pcre2_cv_cc_visibility = yes; then
VISIBILITY_CFLAGS="-fvisibility=hidden"
VISIBILITY_CXXFLAGS="-fvisibility=hidden -fvisibility-inlines-hidden"
HAVE_VISIBILITY=1
AC_DEFINE(PCRE2_EXP_DECL, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
AC_DEFINE(PCRE2_EXP_DEFN, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
AC_DEFINE(PCRE2POSIX_EXP_DECL, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
AC_DEFINE(PCRE2POSIX_EXP_DEFN, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
fi
fi
AC_SUBST([VISIBILITY_CFLAGS])
AC_SUBST([VISIBILITY_CXXFLAGS])
AC_SUBST([HAVE_VISIBILITY])
AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY],
[Define to 1 if the compiler supports simple visibility declarations.])
])