1 # find_system_lib.m4 - Macros to search for a system library. -*- Autoconf -*-
3 dnl requires pkg.m4 from pkg-config
4 dnl requires ax_save_flags.m4 from autoconf-archive
5 dnl requires ax_restore_flags.m4 from autoconf-archive
7 dnl FIND_SYSTEM_LIBRARY(VARIABLE-PREFIX, MODULE, HEADER, HEADER-PREFIXES, LIBRARY, FUNCTIONS, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
9 AC_DEFUN([FIND_SYSTEM_LIBRARY], [
10 AC_REQUIRE([PKG_PROG_PKG_CONFIG])
14 PKG_CHECK_MODULES([$1], [$2], [_library_found=1], [
15 AS_IF([test -f /usr/include/[$3]], [
16 AC_SUBST([$1][_CFLAGS], [])
17 AC_SUBST([$1][_LIBS], ["-l[$5]]")
19 ],[ AS_IF([test -f /usr/local/include/[$3]], [
20 AC_SUBST([$1][_CFLAGS], ["-I/usr/local/include"])
21 AC_SUBST([$1][_LIBS], ["-L/usr/local -l[$5]]")
24 m4_foreach([prefix], [$4], [
25 AS_IF([test "x$_library_found" != "x1"], [
26 AS_IF([test -f [/usr/include/]prefix[/][$3]], [
27 AC_SUBST([$1][_CFLAGS], ["[-I/usr/include/]prefix["]])
28 AC_SUBST([$1][_LIBS], ["-l[$5]]")
30 ],[ AS_IF([test -f [/usr/local/include/]prefix[/][$3]], [
31 AC_SUBST([$1][_CFLAGS], ["[-I/usr/local/include/]prefix["]])
32 AC_SUBST([$1][_LIBS], ["-L/usr/local -l[$5]"])
39 AS_IF([test -z "$_library_found"], [
40 AC_MSG_WARN([cannot find [$2] via pkg-config or in the standard locations])
44 dnl do some further sanity checks
46 AS_IF([test -n "$_library_found"], [
49 CPPFLAGS="$CPPFLAGS $(echo $[$1][_CFLAGS] | sed 's/-include */-include-/g; s/^/ /; s/ [^-][^ ]*//g; s/ -[^Ii][^ ]*//g; s/-include-/-include /g; s/^ //;')"
50 CFLAGS="$CFLAGS $[$1][_CFLAGS]"
51 LDFLAGS="$LDFLAGS $[$1][_LIBS]"
53 AC_CHECK_HEADER([$3], [], [
54 AC_MSG_WARN([header [$3] for library [$2] is not usable])
58 m4_foreach([func], [$6], [
59 AC_CHECK_LIB([$5], func, [], [
60 AC_MSG_WARN([cannot find ]func[ in library [$5]])
68 AS_IF([test -n "$_library_found"], [