File pcre-visibility.patch of Package pcre
Index: configure.ac
===================================================================
--- configure.ac.orig
+++ configure.ac
@@ -45,8 +45,12 @@ AC_CONFIG_MACRO_DIR([m4])
remember_set_CFLAGS="$CFLAGS"
remember_set_CXXFLAGS="$CXXFLAGS"
-AC_PROG_CC
+AC_PROG_CC_STDC
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
+AM_PROG_CC_C_O
AC_PROG_CXX
+PCRE_VISIBILITY
if test "x$remember_set_CFLAGS" = "x"
then
@@ -80,8 +84,7 @@ AC_LANG_POP
AC_TYPE_INT64_T
AC_PROG_INSTALL
-AC_LIBTOOL_WIN32_DLL
-LT_INIT
+LT_INIT([win32-dll pic-only disable-static])
AC_PROG_LN_S
PCRE_MAJOR="pcre_major"
Index: m4/visibility.m4
===================================================================
--- /dev/null
+++ m4/visibility.m4
@@ -0,0 +1,89 @@
+# visibility.m4 serial 4 (gettext-0.18.2)
+dnl Copyright (C) 2005, 2008, 2010-2011 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Tests whether the compiler supports the command-line option
+dnl -fvisibility=hidden and the function and variable attributes
+dnl __attribute__((__visibility__("hidden"))) and
+dnl __attribute__((__visibility__("default"))).
+dnl Does *not* test for __visibility__("protected") - which has tricky
+dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
+dnl MacOS X.
+dnl Does *not* test for __visibility__("internal") - which has processor
+dnl dependent semantics.
+dnl Does *not* test for #pragma GCC visibility push(hidden) - which is
+dnl "really only recommended for legacy code".
+dnl Set the variable CFLAG_VISIBILITY.
+dnl Defines and sets the variable HAVE_VISIBILITY.
+
+dnl Modified to fit with PCRE build environment by Cristian RodrÃguez.
+
+AC_DEFUN([PCRE_VISIBILITY],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ CFLAG_VISIBILITY=
+ CXXFLAG_INLINES_HIDDEN=
+ HAVE_VISIBILITY=0
+ if test -n "$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 $CPPFLAGS.
+ AC_MSG_CHECKING([whether the -Werror option is usable])
+ AC_CACHE_VAL([gl_cv_cc_vis_werror], [
+ gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_cc_vis_werror=yes],
+ [gl_cv_cc_vis_werror=no])
+ CFLAGS="$gl_save_CFLAGS"])
+ AC_MSG_RESULT([$gl_cv_cc_vis_werror])
+ dnl Now check whether visibility declarations are supported.
+ AC_MSG_CHECKING([for simple visibility declarations])
+ AC_CACHE_VAL([gl_cv_cc_visibility], [
+ gl_save_CFLAGS="$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 $gl_cv_cc_vis_werror = yes; then
+ CFLAGS="$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) {}
+ ]],
+ [[]])],
+ [gl_cv_cc_visibility=yes],
+ [gl_cv_cc_visibility=no])
+ CFLAGS="$gl_save_CFLAGS"])
+ AC_MSG_RESULT([$gl_cv_cc_visibility])
+ if test $gl_cv_cc_visibility = yes; then
+ CFLAG_VISIBILITY="-fvisibility=hidden"
+ CXXFLAG_INLINES_HIDDEN="-fvisibility-inlines-hidden"
+ HAVE_VISIBILITY=1
+ AC_DEFINE(PCRE_EXP_DECL, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_DEFINE(PCRE_EXP_DEFN, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_DEFINE(PCRE_EXP_DATA_DEFN, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_DEFINE(PCREPOSIX_EXP_DECL, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_DEFINE(PCREPOSIX_EXP_DEFN, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_DEFINE(PCRECPP_EXP_DECL, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_DEFINE(PCRECPP_EXP_DEFN, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
+ fi
+ fi
+ AC_SUBST([CFLAG_VISIBILITY])
+ AC_SUBST([CXXFLAG_INLINES_HIDDEN])
+ AC_SUBST([HAVE_VISIBILITY])
+ AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY],
+ [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.])
+])
Index: Makefile.am
===================================================================
--- Makefile.am.orig
+++ Makefile.am
@@ -179,6 +179,9 @@ BUILT_SOURCES = pcre_chartables.c
# Build the 8 bit library if it is enabled.
if WITH_PCRE8
lib_LTLIBRARIES += libpcre.la
+
+libpcre_la_CFLAGS = $(CFLAG_VISIBILITY)
+
libpcre_la_SOURCES = \
pcre_byte_order.c \
pcre_compile.c \
@@ -212,6 +215,7 @@ endif # WITH_PCRE8
# Build the 16 bit library if it is enabled.
if WITH_PCRE16
lib_LTLIBRARIES += libpcre16.la
+libpcre16_la_CFLAGS = $(CFLAG_VISIBILITY)
libpcre16_la_SOURCES = \
pcre16_byte_order.c \
pcre16_chartables.c \
@@ -267,10 +271,10 @@ EXTRA_DIST += \
sljit/sljitUtils.c
if WITH_PCRE8
-libpcre_la_LDFLAGS = $(EXTRA_LIBPCRE_LDFLAGS)
+libpcre_la_LDFLAGS = -no-undefined $(EXTRA_LIBPCRE_LDFLAGS)
endif # WITH_PCRE8
if WITH_PCRE16
-libpcre16_la_LDFLAGS = $(EXTRA_LIBPCRE16_LDFLAGS)
+libpcre16_la_LDFLAGS = -no-undefined $(EXTRA_LIBPCRE16_LDFLAGS)
endif # WITH_PCRE16
CLEANFILES += pcre_chartables.c
@@ -292,9 +296,10 @@ endif # WITH_JIT
## A version of the main pcre library that has a posix re API.
if WITH_PCRE8
lib_LTLIBRARIES += libpcreposix.la
+libpcreposix_la_CFLAGS = $(CFLAG_VISIBILITY)
libpcreposix_la_SOURCES = \
pcreposix.c
-libpcreposix_la_LDFLAGS = $(EXTRA_LIBPCREPOSIX_LDFLAGS)
+libpcreposix_la_LDFLAGS = -no-undefined $(EXTRA_LIBPCREPOSIX_LDFLAGS)
libpcreposix_la_LIBADD = libpcre.la
endif # WITH_PCRE8
@@ -302,12 +307,13 @@ endif # WITH_PCRE8
if WITH_PCRE_CPP
lib_LTLIBRARIES += libpcrecpp.la
+libpcrecpp_la_CXXFLAGS = $(CFLAG_VISIBILITY)
libpcrecpp_la_SOURCES = \
pcrecpp_internal.h \
pcrecpp.cc \
pcre_scanner.cc \
pcre_stringpiece.cc
-libpcrecpp_la_LDFLAGS = $(EXTRA_LIBPCRECPP_LDFLAGS)
+libpcrecpp_la_LDFLAGS = -no-undefined $(EXTRA_LIBPCRECPP_LDFLAGS)
libpcrecpp_la_LIBADD = libpcre.la
TESTS += pcrecpp_unittest
@@ -351,6 +357,7 @@ if WITH_PCRE8
TESTS += RunGrepTest
dist_noinst_SCRIPTS += RunGrepTest
bin_PROGRAMS += pcregrep
+pcregrep_CFLAGS = -fwhole-program
pcregrep_SOURCES = pcregrep.c
pcregrep_LDADD = $(LIBZ) $(LIBBZ2)
pcregrep_LDADD += libpcre.la libpcreposix.la
