diff options
Diffstat (limited to 'm4/libunistring-base.m4')
| -rw-r--r-- | m4/libunistring-base.m4 | 53 |
1 files changed, 52 insertions, 1 deletions
diff --git a/m4/libunistring-base.m4 b/m4/libunistring-base.m4 index fc6d02399c..6dd184a789 100644 --- a/m4/libunistring-base.m4 +++ b/m4/libunistring-base.m4 @@ -1,4 +1,4 @@ -# libunistring-base.m4 serial 7 +# libunistring-base.m4 serial 8 dnl Copyright (C) 2010-2023 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -18,6 +18,8 @@ dnl You have to bump the VERSION argument to the next projected version dnl number each time you make a change that affects the behaviour of the dnl functions defined in Module (even if the sources of Module itself do not dnl change). +dnl +dnl This macro invocation must not occur in macros that are AC_REQUIREd. AC_DEFUN([gl_LIBUNISTRING_MODULE], [ @@ -28,6 +30,35 @@ AC_DEFUN([gl_LIBUNISTRING_MODULE], [gl_LIBUNISTRING_VERSION_CMP([$1])]) ]) +dnl gl_LIBUNISTRING_MODULE_WITH_VARIABLE([VERSION], [Module]) +dnl is like gl_LIBUNISTRING_MODULE([VERSION], [Module]), except that it also +dnl defines an AC_SUBSTed autoconf variable GNULIB_$MODULE_DLL_VARIABLE. +dnl What's the expansion of this autoconf variable? +dnl - When building libunistring, it expands to LIBUNISTRING_DLL_VARIABLE. +dnl (This is necessary because this token must be present in the .h files +dnl when the .h files get installed.) +dnl - When building gnulib or application code it expands to +dnl - LIBUNISTRING_DLL_VARIABLE by default, +dnl - empty if the automake conditional LIBUNISTRING_COMPILE_$MODULE +dnl evaluates to true. +dnl (This is necessary because when the conditional evaluates to false, +dnl the application code expects to use the declared variable from the +dnl installed libunistring; it's in this case that the +dnl LIBUNISTRING_DLL_VARIABLE macro from the installed +dnl <unistring/woe32dll.h> must be used.) +dnl +dnl This macro invocation must not occur in macros that are AC_REQUIREd. + +AC_DEFUN([gl_LIBUNISTRING_MODULE_WITH_VARIABLE], +[ + gl_LIBUNISTRING_MODULE([$1], [$2]) + m4_ifndef([gl_IN_LIBUNISTRING], + [if test -z "${AS_TR_CPP([LIBUNISTRING_COMPILE_$2])_TRUE}"; then + GL_MODULE_INDICATOR_PREFIX[]_GNULIB_[]AS_TR_CPP([$2_DLL_VARIABLE])= + fi + ]) +]) + dnl gl_LIBUNISTRING_LIBHEADER([VERSION], [HeaderFile]) dnl Declares that HeaderFile should be created, unless we are linking dnl with libunistring and its version is >= the given VERSION. @@ -95,6 +126,26 @@ changequote([,]) LIBUNISTRING_VERSION_MINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_minor"` LIBUNISTRING_VERSION_SUBMINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_subminor"` fi + + dnl Determine whether <unistring/woe32dll.h> from an installed libunistring + dnl is available. + m4_ifdef([gl_IN_LIBUNISTRING], + [dnl In libunistring, all .h files that declare variables need to + dnl #include <unistring/woe32dll.h>. This references the file + dnl unistring/woe32dll.h in libunistring. + HAVE_UNISTRING_WOE32DLL_H=1 + ], + [dnl In gnulib or in applications, we need a #include <unistring/woe32dll.h> + dnl if and only if an installed libunistring is available. + if test "$HAVE_LIBUNISTRING" = yes; then + AC_CHECK_HEADERS([unistring/woe32dll.h], + [HAVE_UNISTRING_WOE32DLL_H=1], + [HAVE_UNISTRING_WOE32DLL_H=0]) + else + HAVE_UNISTRING_WOE32DLL_H=0 + fi + ]) + AC_SUBST([HAVE_UNISTRING_WOE32DLL_H]) ]) dnl gl_LIBUNISTRING_VERSION_CMP([VERSION]) |