diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/xc-lt-iface.m4 | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/m4/xc-lt-iface.m4 b/m4/xc-lt-iface.m4 new file mode 100644 index 000000000..0b90d5f25 --- /dev/null +++ b/m4/xc-lt-iface.m4 @@ -0,0 +1,465 @@ +#--------------------------------------------------------------------------- +# +# xc-lt-iface.m4 +# +# Copyright (c) 2013 Daniel Stenberg <daniel@haxx.se> +# +# Permission to use, copy, modify, and distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +# +#--------------------------------------------------------------------------- + +# serial 1 + + +dnl _XC_LIBTOOL_PREAMBLE +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks some configure script options related with +dnl libtool and customizes its default behavior before +dnl libtool code is actually used in script. + +m4_define([_XC_LIBTOOL_PREAMBLE], +[dnl +# ------------------------------------ # +# Determine libtool default behavior # +# ------------------------------------ # + +# +# Default behavior is to enable shared and static libraries on systems +# where libtool knows how to build both library versions, and does not +# require separate configuration and build runs for each flavor. +# + +xc_lt_want_enable_shared='yes' +xc_lt_want_enable_static='yes' + +# +# User may have disabled shared or static libraries. +# +case "x$enable_shared" in @%:@ ( + xno) + xc_lt_want_enable_shared='no' + ;; +esac +case "x$enable_static" in @%:@ ( + xno) + xc_lt_want_enable_static='no' + ;; +esac +if test "x$xc_lt_want_enable_shared" = 'xno' && + test "x$xc_lt_want_enable_static" = 'xno'; then + AC_MSG_ERROR([can not disable shared and static libraries simultaneously]) +fi + +# +# Default behavior on systems that require independent configuration +# and build runs for shared and static is to enable shared libraries +# and disable static ones. On these systems option '--disable-shared' +# must be used in order to build a proper static library. +# + +if test "x$xc_lt_want_enable_shared" = 'xyes' && + test "x$xc_lt_want_enable_static" = 'xyes'; then + case $host_os in @%:@ ( + mingw* | pw32* | cegcc* | os2* | aix*) + xc_lt_want_enable_static='no' + ;; + esac +fi + +# +# Make libtool aware of current shared and static library preferences +# taking in account that, depending on host characteristics, libtool +# may modify these option preferences later in this configure script. +# + +enable_shared=$xc_lt_want_enable_shared +enable_static=$xc_lt_want_enable_static + +# +# Default behavior is to build PIC objects for shared libraries and +# non-PIC objects for static libraries. +# + +xc_lt_want_with_pic='default' + +# +# User may have specified PIC preference. +# + +case "x$with_pic" in @%:@ (( + xno) + xc_lt_want_with_pic='no' + ;; + xyes) + xc_lt_want_with_pic='yes' + ;; +esac + +# +# Default behavior on some systems where building a shared library out +# of non-PIC compiled objects will fail with following linker error +# "relocation R_X86_64_32 can not be used when making a shared object" +# is to build PIC objects even for static libraries. This behavior may +# be overriden using 'configure --disable-shared --without-pic'. +# + +if test "x$xc_lt_want_with_pic" = 'xdefault'; then + case $host_cpu in @%:@ ( + x86_64 | amd64 | ia64) + case $host_os in @%:@ ( + linux* | freebsd*) + xc_lt_want_with_pic='yes' + ;; + esac + ;; + esac +fi + +# +# Make libtool aware of current PIC preference taking in account that, +# depending on host characteristics, libtool may modify PIC default +# behavior to fit host system idiosyncrasies later in this script. +# + +with_pic=$xc_lt_want_with_pic +dnl +m4_define([$0],[])dnl +]) + + +dnl _XC_LIBTOOL_BODY +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl This macro performs embedding of libtool code into +dnl configure script, regardless of libtool version in +dnl use when generating configure script. + +m4_define([_XC_LIBTOOL_BODY], +[dnl +## ----------------------- ## +## Start of libtool code ## +## ----------------------- ## +m4_ifdef([LT_INIT], +[dnl +LT_INIT([win32-dll]) +],[dnl +AC_LIBTOOL_WIN32_DLL +AC_PROG_LIBTOOL +])dnl +## --------------------- ## +## End of libtool code ## +## --------------------- ## +dnl +m4_define([$0], [])[]dnl +]) + + +dnl _XC_CHECK_LT_BUILD_LIBRARIES +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks wether libtool shared and static libraries +dnl are finally built depending on user input, default +dnl behavior and knowledge that libtool has about host +dnl characteristics. +dnl Results stored in following shell variables: +dnl xc_lt_build_shared +dnl xc_lt_build_static + +m4_define([_XC_CHECK_LT_BUILD_LIBRARIES], +[dnl +# +# Verify if finally libtool shared libraries will be built +# + +case "x$enable_shared" in @%:@ (( + xyes | xno) + xc_lt_build_shared=$enable_shared + ;; + *) + AC_MSG_ERROR([unexpected libtool enable_shared value: $enable_shared]) + ;; +esac + +# +# Verify if finally libtool static libraries will be built +# + +case "x$enable_static" in @%:@ (( + xyes | xno) + xc_lt_build_static=$enable_static + ;; + *) + AC_MSG_ERROR([unexpected libtool enable_static value: $enable_static]) + ;; +esac +dnl +m4_define([$0],[])dnl +]) + + +dnl _XC_CHECK_LT_SHLIB_USE_VERSION_INFO +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks if the -version-info linker flag must be +dnl provided when building libtool shared libraries. +dnl Result stored in xc_lt_shlib_use_version_info. + +m4_define([_XC_CHECK_LT_SHLIB_USE_VERSION_INFO], +[dnl +# +# Verify if libtool shared libraries should be linked using flag -version-info +# + +AC_MSG_CHECKING([whether to build shared libraries with -version-info]) +xc_lt_shlib_use_version_info='yes' +if test "x$version_type" = 'xnone'; then + xc_lt_shlib_use_version_info='no' +fi +case $host_os in @%:@ ( + amigaos*) + xc_lt_shlib_use_version_info='yes' + ;; +esac +AC_MSG_RESULT([$xc_lt_shlib_use_version_info]) +dnl +m4_define([$0], [])[]dnl +]) + + +dnl _XC_CHECK_LT_SHLIB_USE_NO_UNDEFINED +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks if the -no-undefined linker flag must be +dnl provided when building libtool shared libraries. +dnl Result stored in xc_lt_shlib_use_no_undefined. + +m4_define([_XC_CHECK_LT_SHLIB_USE_NO_UNDEFINED], +[dnl +# +# Verify if libtool shared libraries should be linked using flag -no-undefined +# + +AC_MSG_CHECKING([whether to build shared libraries with -no-undefined]) +xc_lt_shlib_use_no_undefined='no' +if test "x$allow_undefined" = 'xno'; then + xc_lt_shlib_use_no_undefined='yes' +elif test "x$allow_undefined_flag" = 'xunsupported'; then + xc_lt_shlib_use_no_undefined='yes' +fi +case $host_os in @%:@ ( + cygwin* | mingw* | pw32* | cegcc* | os2* | aix*) + xc_lt_shlib_use_no_undefined='yes' + ;; +esac +AC_MSG_RESULT([$xc_lt_shlib_use_no_undefined]) +dnl +m4_define([$0], [])[]dnl +]) + + +dnl _XC_CHECK_LT_SHLIB_USE_MIMPURE_TEXT +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks if the -mimpure-text linker flag must be +dnl provided when building libtool shared libraries. +dnl Result stored in xc_lt_shlib_use_mimpure_text. + +m4_define([_XC_CHECK_LT_SHLIB_USE_MIMPURE_TEXT], +[dnl +# +# Verify if libtool shared libraries should be linked using flag -mimpure-text +# + +AC_MSG_CHECKING([whether to build shared libraries with -mimpure-text]) +xc_lt_shlib_use_mimpure_text='no' +case $host_os in @%:@ ( + solaris2*) + if test "x$GCC" = 'xyes'; then + xc_lt_shlib_use_mimpure_text='yes' + fi + ;; +esac +AC_MSG_RESULT([$xc_lt_shlib_use_mimpure_text]) +dnl +m4_define([$0], [])[]dnl +]) + + +dnl _XC_CHECK_LT_BUILD_WITH_PIC +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks wether libtool shared and static libraries +dnl would be built with PIC depending on user input, +dnl default behavior and knowledge that libtool has +dnl about host characteristics. +dnl Results stored in following shell variables: +dnl xc_lt_build_shared_with_pic +dnl xc_lt_build_static_with_pic + +m4_define([_XC_CHECK_LT_BUILD_WITH_PIC], +[dnl +# +# Find out wether libtool libraries would be built wit PIC +# + +case "x$pic_mode" in @%:@ (((( + xdefault) + xc_lt_build_shared_with_pic='yes' + xc_lt_build_static_with_pic='no' + ;; + xyes) + xc_lt_build_shared_with_pic='yes' + xc_lt_build_static_with_pic='yes' + ;; + xno) + xc_lt_build_shared_with_pic='no' + xc_lt_build_static_with_pic='no' + ;; + *) + xc_lt_build_shared_with_pic='unknown' + xc_lt_build_static_with_pic='unknown' + AC_MSG_WARN([unexpected libtool pic_mode value: $pic_mode]) + ;; +esac +AC_MSG_CHECKING([whether to build shared libraries with PIC]) +AC_MSG_RESULT([$xc_lt_build_shared_with_pic]) +AC_MSG_CHECKING([whether to build static libraries with PIC]) +AC_MSG_RESULT([$xc_lt_build_static_with_pic]) +dnl +m4_define([$0],[])dnl +]) + + +dnl _XC_CHECK_LT_BUILD_SINGLE_VERSION +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Checks wether a libtool shared or static library +dnl is finally built exclusively without the other. +dnl Results stored in following shell variables: +dnl xc_lt_build_shared_only +dnl xc_lt_build_static_only + +m4_define([_XC_CHECK_LT_BUILD_SINGLE_VERSION], +[dnl +# +# Verify if libtool shared libraries will be built while static not built +# + +AC_MSG_CHECKING([whether to build shared libraries only]) +if test "$xc_lt_build_shared" = 'yes' && + test "$xc_lt_build_static" = 'no'; then + xc_lt_build_shared_only='yes' +else + xc_lt_build_shared_only='no' +fi +AC_MSG_RESULT([$xc_lt_build_shared_only]) + +# +# Verify if libtool static libraries will be built while shared not built +# + +AC_MSG_CHECKING([whether to build static libraries only]) +if test "$xc_lt_build_static" = 'yes' && + test "$xc_lt_build_shared" = 'no'; then + xc_lt_build_static_only='yes' +else + xc_lt_build_static_only='no' +fi +AC_MSG_RESULT([$xc_lt_build_static_only]) +dnl +m4_define([$0],[])dnl +]) + + +dnl _XC_LIBTOOL_POSTLUDE +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl Performs several checks related with libtool that +dnl can not be done unless libtool code has already +dnl been executed. See individual check descriptions +dnl for further info. + +m4_define([_XC_LIBTOOL_POSTLUDE], +[dnl +_XC_CHECK_LT_BUILD_LIBRARIES +_XC_CHECK_LT_SHLIB_USE_VERSION_INFO +_XC_CHECK_LT_SHLIB_USE_NO_UNDEFINED +_XC_CHECK_LT_SHLIB_USE_MIMPURE_TEXT +_XC_CHECK_LT_BUILD_WITH_PIC +_XC_CHECK_LT_BUILD_SINGLE_VERSION +dnl +m4_define([$0],[])dnl +]) + + +dnl XC_LIBTOOL +dnl ------------------------------------------------- +dnl Public macro. +dnl +dnl This macro embeds libtool machinery into configure +dnl script, regardless of libtool version, and performs +dnl several additional checks whose results can be used +dnl later on. +dnl +dnl Usage of this macro ensures that generated configure +dnl script uses equivalent logic irrespective of autoconf +dnl or libtool version being used to generate configure +dnl script. +dnl +dnl Results stored in following shell variables: +dnl xc_lt_build_shared +dnl xc_lt_build_static +dnl xc_lt_shlib_use_version_info +dnl xc_lt_shlib_use_no_undefined +dnl xc_lt_shlib_use_mimpure_text +dnl xc_lt_build_shared_with_pic +dnl xc_lt_build_static_with_pic +dnl xc_lt_build_shared_only +dnl xc_lt_build_static_only + +AC_DEFUN([XC_LIBTOOL], +[dnl +AC_PREREQ([2.50])dnl +dnl +AC_BEFORE([$0],[LT_INIT])dnl +AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl +AC_BEFORE([$0],[AC_LIBTOOL_WIN32_DLL])dnl +dnl +AC_REQUIRE([XC_CHECK_PATH_SEPARATOR])dnl +AC_REQUIRE([AC_CANONICAL_HOST])dnl +AC_REQUIRE([AC_PROG_CC])dnl +dnl +_XC_LIBTOOL_PREAMBLE +_XC_LIBTOOL_BODY +_XC_LIBTOOL_POSTLUDE +dnl +m4_ifdef([AC_LIBTOOL_WIN32_DLL], + [m4_undefine([AC_LIBTOOL_WIN32_DLL])])dnl +m4_ifdef([AC_PROG_LIBTOOL], + [m4_undefine([AC_PROG_LIBTOOL])])dnl +m4_ifdef([LT_INIT], + [m4_undefine([LT_INIT])])dnl +dnl +m4_define([$0],[])dnl +]) + |