diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/check-libheader.m4 | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/m4/check-libheader.m4 b/m4/check-libheader.m4 new file mode 100644 index 00000000..42db689b --- /dev/null +++ b/m4/check-libheader.m4 @@ -0,0 +1,42 @@ +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]) +] +) |