# ax_pkg_check_var.m4 - Macros to locate and utilise variables from pkg-config. -*- Autoconf -*- m4_ifndef([AS_VAR_COPY], [m4_define([AS_VAR_COPY], [AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])])]) # PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, # [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) # ------------------------------------------- # Retrieves the value of the pkg-config variable for the given module. m4_ifndef([PKG_CHECK_VAR],[ AC_DEFUN([PKG_CHECK_VAR], [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl _PKG_CONFIG([$1], [variable="][$3]["], [$2]) AS_VAR_COPY([$1], [pkg_cv_][$1]) AS_VAR_IF([$1], [""], [$5], [$4])dnl ])# PKG_CHECK_VAR ])