diff options
Diffstat (limited to 'build-aux/m4/bitcoin_subdir_to_include.m4')
| -rw-r--r-- | build-aux/m4/bitcoin_subdir_to_include.m4 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/build-aux/m4/bitcoin_subdir_to_include.m4 b/build-aux/m4/bitcoin_subdir_to_include.m4 new file mode 100644 index 0000000000..66f106c7d4 --- /dev/null +++ b/build-aux/m4/bitcoin_subdir_to_include.m4 @@ -0,0 +1,14 @@ +dnl BITCOIN_SUBDIR_TO_INCLUDE([CPPFLAGS-VARIABLE-NAME],[SUBDIRECTORY-NAME],[HEADER-FILE]) +dnl SUBDIRECTORY-NAME must end with a path separator +AC_DEFUN([BITCOIN_SUBDIR_TO_INCLUDE],[ + if test "x$2" = "x"; then + AC_MSG_RESULT([default]) + else + echo "#include <$2$3.h>" >conftest.cpp + newinclpath=`${CXXCPP} ${CPPFLAGS} -M conftest.cpp 2>/dev/null | [ tr -d '\\n\\r\\\\' | sed -e 's/^.*[[:space:]:]\(\/[^[:space:]]*\)]$3[\.h[[:space:]].*$/\1/' -e t -e d`] + AC_MSG_RESULT([${newinclpath}]) + if test "x${newinclpath}" != "x"; then + eval "$1=\"\$$1\"' -I${newinclpath}'" + fi + fi +]) |