diff options
Diffstat (limited to 'nixpkgs/pkgs/development/libraries/xcb-util-cursor/m4/xcb_util_m4_with_include_path.m4')
| -rw-r--r-- | nixpkgs/pkgs/development/libraries/xcb-util-cursor/m4/xcb_util_m4_with_include_path.m4 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/xcb-util-cursor/m4/xcb_util_m4_with_include_path.m4 b/nixpkgs/pkgs/development/libraries/xcb-util-cursor/m4/xcb_util_m4_with_include_path.m4 new file mode 100644 index 000000000000..a3ddce4a706f --- /dev/null +++ b/nixpkgs/pkgs/development/libraries/xcb-util-cursor/m4/xcb_util_m4_with_include_path.m4 @@ -0,0 +1,24 @@ +# XCB_UTIL_M4_WITH_INCLUDE_PATH +# ------------------------------ +# +# This macro attempts to locate an m4 macro processor which supports +# -I option and is only useful for modules relying on M4 in order to +# expand macros in source code files. +# +# M4: variable holding the path to an usable m4 program. +# +# This macro requires Autoconf 2.62 or later as it is relying upon +# AC_PATH_PROGS_FEATURE_CHECK macro. NOTE: As soon as the minimum +# required version of Autoconf for Xorg is bumped to 2.62, this macro +# is supposed to be shipped with xorg/util/macros. +# +AC_DEFUN([XCB_UTIL_M4_WITH_INCLUDE_PATH], [ +AC_CACHE_CHECK([for m4 that supports -I option], [ac_cv_path_M4], + [AC_PATH_PROGS_FEATURE_CHECK([M4], [m4 gm4], + [[$ac_path_M4 -I. /dev/null > /dev/null 2>&1 && \ + ac_cv_path_M4=$ac_path_M4 ac_path_M4_found=:]], + [AC_MSG_ERROR([could not find m4 that supports -I option])], + [$PATH:/usr/gnu/bin])]) + +AC_SUBST([M4], [$ac_cv_path_M4]) +]) # XCB_UTIL_M4_WITH_INCLUDE_PATH |