Commit 7eeee17d authored by Wrobell's avatar Wrobell

- CHECK_LIBHEADER macro, which is based on GST_CHECK_LIBHEADER the main...

- CHECK_LIBHEADER macro, which is based on GST_CHECK_LIBHEADER the main difference between them is that you can speci...

Original commit message from CVS:
- CHECK_LIBHEADER macro, which is based on GST_CHECK_LIBHEADER
the main difference between them is that you can specify cpp flags with
CHECK_LIBHEADER
parent 6c039d32
dnl
dnl CHECK-LIBHEADER(FEATURE-NAME, LIB-NAME, LIB-FUNCTION, HEADER-NAME,
dnl ACTION-IF-FOUND, ACTION-IF-NOT-FOUND,
dnl EXTRA-LDFLAGS, EXTRA-CPPFLAGS)
dnl
dnl FEATURE-NAME - feature name; library and header files are treated
dnl as feature, which we look for
dnl LIB-NAME - library name as in AC_CHECK_LIB macro
dnl LIB-FUNCTION - library symbol as in AC_CHECK_LIB macro
dnl HEADER-NAME - header file name as in AC_CHECK_HEADER
dnl ACTION-IF-FOUND - when feature is found then execute given action
dnl ACTION-IF-NOT-FOUND - when feature is not found then execute given action
dnl EXTRA-LDFLAGS - extra linker flags (-L or -l)
dnl EXTRA-CPPFLAGS - extra C preprocessor flags, i.e. -I/usr/X11R6/include
dnl
dnl Based on GST_CHECK_LIBHEADER from gstreamer plugins 0.3.1.
dnl
AC_DEFUN(CHECK_LIBHEADER,
[
AC_CHECK_LIB([$2], [$3], HAVE_[$1]=yes, HAVE_[$1]=no, [$7])
check_libheader_feature_name=translit([$1], A-Z, a-z)
if test "x$HAVE_[$1]" = "xyes"; then
check_libheader_save_CPPFLAGS=$CPPFLAGS
CPPFLAGS="[$8] $CPPFLAGS"
AC_CHECK_HEADER([$4], :, HAVE_[$1]=no)
CPPFLAGS=$check_libheader_save_CPPFLAGS
if test "x$HAVE_[$1]" = "xyes"; then
dnl execute what needs to be
ifelse([$5], , :, [$5])
AC_MSG_NOTICE(feature $check_libheader_feature_name is found)
else
ifelse([$6], , :, [$6])
fi
else
AC_MSG_WARN($check_libheader_feature_name not found)
fi
AC_SUBST(HAVE_[$1])
]
)
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