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Quelle ax_check_library.m4 Sprache: Shell |
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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_check_library.html # =========================================================================== # # SYNOPSIS # # AX_CHECK_LIBRARY(VARIABLE-PREFIX, HEADER-FILE, LIBRARY-FILE, FUNCTION, # [ACTION-IF-FOUND], [ACTION-IF-NOT_FOUND], [other-libraries]) # # DESCRIPTION # # Provides a generic test for a given library, similar in concept to the # PKG_CHECK_MODULES macro used by pkg-config. # # Most simple libraries can be checked against simply through the # presence of a header file and a library to link to. This macro allows to # wrap around the test so that it doesn't have to be recreated each time. # # Rather than define --with-$LIBRARY arguments, it uses variables in the # same way that PKG_CHECK_MODULES does. It doesn't, though, use the same # names, since you shouldn't provide a value for LIBS or CFLAGS but rather # for LDFLAGS and CPPFLAGS, to tell the linker and compiler where to find # libraries and headers respectively. # # If the library is found, HAVE_PREFIX is defined, and in all cases # PREFIX_LDFLAGS and PREFIX_CPPFLAGS are substituted. # # Example: # # AX_CHECK_LIBRARY([LIBEVENT], [event.h], [event], [main], [], # [AC_MSG_ERROR([Unable to find libevent])]) # # LICENSE # # Copyright (c) 2010 Diego Elio Petteno` <flameeyes@gmail.com> # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see <https://www.gnu.org/licenses/>. # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Archive. When you make and distribute a # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. #serial 5 AC_DEFUN([AX_CHECK_LIBRARY], [ AC_ARG_VAR($1[_CPPFLAGS], [C preprocessor flags for ]$1[ headers]) AC_ARG_VAR($1[_LDFLAGS], [linker flags for ]$1[ libraries]) AC_CACHE_VAL(AS_TR_SH([ax_cv_have_]$1), [save_CPPFLAGS="$CPPFLAGS" save_LDFLAGS="$LDFLAGS" save_LIBS="$LIBS" AS_IF([test "x$]$1[_CPPFLAGS" != "x"], [CPPFLAGS="$CPPFLAGS $]$1[_CPPFLAGS"]) AS_IF([test "x$]$1[_LDFLAGS" != "x"], [LDFLAGS="$LDFLAGS $]$1[_LDFLAGS"]) AC_CHECK_HEADER($2, [ AC_CHECK_LIB($3, [$4], [AS_TR_SH([ax_cv_have_]$1)=yes], [AS_TR_SH([ax_cv_have_]$1)=no], [$7]) ], [AS_TR_SH([ax_cv_have_]$1)=no]) CPPFLAGS="$save_CPPFLAGS" LDFLAGS="$save_LDFLAGS" LIBS="$save_LIBS" ]) AS_IF([test "$]AS_TR_SH([ax_cv_have_]$1)[" = "yes"], AC_DEFINE([HAVE_]$1, [1], [Define to 1 if ]$1[ is found]) [$5], [$6]) ]) ¤ Dauer der Verarbeitung: 0.18 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28