| # find_system_lib.m4 - Macros to search for a system library. -*- Autoconf -*- |
| |
| dnl requires pkg.m4 from pkg-config |
| dnl requires ax_save_flags.m4 from autoconf-archive |
| dnl requires ax_restore_flags.m4 from autoconf-archive |
| |
| dnl FIND_SYSTEM_LIBRARY(VARIABLE-PREFIX, MODULE, HEADER, HEADER-PREFIXES, LIBRARY, FUNCTIONS, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) |
| |
| AC_DEFUN([FIND_SYSTEM_LIBRARY], [ |
| AC_REQUIRE([PKG_PROG_PKG_CONFIG]) |
| |
| _library_found= |
| |
| PKG_CHECK_MODULES([$1], [$2], [_library_found=1], [ |
| AS_IF([test -f /usr/include/[$3]], [ |
| AC_SUBST([$1][_CFLAGS], []) |
| AC_SUBST([$1][_LIBS], ["-l[$5]]") |
| _library_found=1 |
| ],[ AS_IF([test -f /usr/local/include/[$3]], [ |
| AC_SUBST([$1][_CFLAGS], ["-I/usr/local/include"]) |
| AC_SUBST([$1][_LIBS], ["-L/usr/local -l[$5]]") |
| _library_found=1 |
| ],[dnl ELSE |
| m4_foreach([prefix], [$4], [ |
| AS_IF([test "x$_library_found" != "x1"], [ |
| AS_IF([test -f [/usr/include/]prefix[/][$3]], [ |
| AC_SUBST([$1][_CFLAGS], ["[-I/usr/include/]prefix["]]) |
| AC_SUBST([$1][_LIBS], ["-l[$5]]") |
| _library_found=1 |
| ],[ AS_IF([test -f [/usr/local/include/]prefix[/][$3]], [ |
| AC_SUBST([$1][_CFLAGS], ["[-I/usr/local/include/]prefix["]]) |
| AC_SUBST([$1][_LIBS], ["-L/usr/local -l[$5]"]) |
| _library_found=1 |
| ])]) |
| ]) |
| ]) |
| ])]) |
| |
| AS_IF([test -z "$_library_found"], [ |
| AC_MSG_WARN([cannot find [$2] via pkg-config or in the standard locations]) |
| ]) |
| ]) |
| |
| dnl do some further sanity checks |
| |
| AS_IF([test -n "$_library_found"], [ |
| AX_SAVE_FLAGS |
| |
| CPPFLAGS="$CPPFLAGS $(echo $[$1][_CFLAGS] | sed 's/-include */-include-/g; s/^/ /; s/ [^-][^ ]*//g; s/ -[^Ii][^ ]*//g; s/-include-/-include /g; s/^ //;')" |
| CFLAGS="$CFLAGS $[$1][_CFLAGS]" |
| LDFLAGS="$LDFLAGS $[$1][_LIBS]" |
| |
| AC_CHECK_HEADER([$3], [], [ |
| AC_MSG_WARN([header [$3] for library [$2] is not usable]) |
| _library_found= |
| ]) |
| |
| m4_foreach([func], [$6], [ |
| AC_CHECK_LIB([$5], func, [], [ |
| AC_MSG_WARN([cannot find ]func[ in library [$5]]) |
| _library_found= |
| ]) |
| ]) |
| |
| AX_RESTORE_FLAGS |
| ]) |
| |
| AS_IF([test -n "$_library_found"], [ |
| :;$7 |
| ],[dnl ELSE |
| :;$8 |
| ]) |
| ]) |