diff options
Diffstat (limited to 'm4/libtextstyle-optional.m4')
| -rw-r--r-- | m4/libtextstyle-optional.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/m4/libtextstyle-optional.m4 b/m4/libtextstyle-optional.m4 new file mode 100644 index 0000000000..16c8f1677c --- /dev/null +++ b/m4/libtextstyle-optional.m4 @@ -0,0 +1,30 @@ +# libtextstyle-optional.m4 serial 1 +dnl Copyright (C) 2019 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl From Bruno Haible. + +dnl gl_LIBTEXTSTYLE_OPTIONAL +dnl Searches for an installed libtextstyle or uses the included source code +dnl parts that define only part of the API and does not do any styling. +dnl If found, it sets and AC_SUBSTs HAVE_LIBTEXTSTYLE=yes and the LIBTEXTSTYLE +dnl and LTLIBTEXTSTYLE variables, and augments the CPPFLAGS variable, and +dnl #defines HAVE_LIBTEXTSTYLE to 1. +dnl Otherwise, it sets and AC_SUBSTs HAVE_LIBTEXTSTYLE=no and LIBTEXTSTYLE and +dnl LTLIBTEXTSTYLE to empty. + +AC_DEFUN([gl_LIBTEXTSTYLE_OPTIONAL], +[ + AC_REQUIRE([gl_LIBTEXTSTYLE]) + if test $HAVE_LIBTEXTSTYLE = yes; then + TEXTSTYLE_H= + else + TEXTSTYLE_H=textstyle.h + AC_REQUIRE([AC_C_INLINE]) + AC_CHECK_FUNCS_ONCE([tcdrain]) + fi + AC_SUBST([TEXTSTYLE_H]) + AM_CONDITIONAL([GL_GENERATE_TEXTSTYLE_H], [test -n "$TEXTSTYLE_H"]) +]) |