Aegisub/m4macros/ac_agi.m4

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AC_DEFUN([AC_AGI_COMPILE],[
aegisub_save_LIBS="$LIBS"
aegisub_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $3"
LIBS="$LIBS $4"
AC_CACHE_CHECK(
[whether $1 works], [agi_cv_with_$2],
[AC_RUN_IFELSE([AC_LANG_SOURCE([$5])],
[eval agi_cv_with_$2="yes"],
[eval agi_cv_with_$2="no"],
[AS_IF([test $? -ne 0], [eval agi_cv_with_$2="no"], [eval agi_cv_with_$2="yes"])])])
CPPFLAGS="$aegisub_save_CPPFLAGS"
LIBS="$aegisub_save_LIBS"
])
AC_DEFUN([AC_AGI_LINK],[
aegisub_save_LIBS="$LIBS"
aegisub_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $4"
LIBS="$LIBS $5"
AC_CHECK_HEADER([$3], [agi_cv_header="yes"], [agi_cv_header="no"])
AS_IF([test "x$agi_cv_header" = xyes],
[AC_CACHE_CHECK(
[whether $1 works], [agi_cv_with_$2],
[AC_LINK_IFELSE([AC_LANG_SOURCE([$6])], [eval agi_cv_with_$2="yes"], [eval agi_cv_with_$2="no"])])]
[eval agi_cv_with_$2="no"])
CPPFLAGS="$aegisub_save_CPPFLAGS"
LIBS="$aegisub_save_LIBS"
])
# An optional dependency which requires pkg-config
# Args: Name, AC_ARG_WITH help string, AC_DEFINE help string
AC_DEFUN([AGI_OPT_PKG], [
m4_define([varname], m4_bpatsubst([$1], [-.*], []))dnl
m4_define([upper], m4_translit(varname, [a-z], [A-Z]))dnl
AC_ARG_WITH(varname, AS_HELP_STRING([--without-][varname], [$2]))
AS_IF([test x$with_]varname[ = xno],
varname[_disabled="(disabled)"],
[PKG_CHECK_MODULES(upper, $1 >= varname[]_required_version, [
AC_DEFINE([WITH_]upper, 1, $3)
with_[]varname="yes"
], [
AS_IF([test x$with_]varname[ = xyes],
[AC_MSG_FAILURE([--with-]varname[ was specified, but ]varname[ could not be found])])
with_[]varname="no"
])])
AC_SUBST([with_]varname)
])