| On glibc systems, argp is provided by libc. However, on |
| uclibc and other systems which lack argp in their C library, |
| argp might be provided by a stand alone library, libargp. |
| This patch adds tests to the build system to find who provides |
| argp. |
| |
| X-Gentoo-Bug: 292191 |
| X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=292191 |
| Reported-by: Ed Wildgoose <gentoo@wildgooses.com> |
| Signed-off-by: Anthony G. Basile <blueness@gentoo.org> |
| |
| |
| --- configure.ac.orig 2012-05-26 22:45:42.753478198 +0000 |
| +++ configure.ac 2012-05-27 00:36:23.175844081 +0000 |
| @@ -47,6 +47,28 @@ |
| dnl Checks for optional library functions |
| dnl ------------------------------------- |
| |
| +dnl First check if we have argp available from libc |
| +AC_LINK_IFELSE( |
| + [AC_LANG_PROGRAM( |
| + [#include <argp.h>], |
| + [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,argv,0,0,0); return 0;] |
| + )], |
| + [libc_has_argp="true"], |
| + [libc_has_argp="false"] |
| +) |
| + |
| +dnl If libc doesn't provide argp, then test for libargp |
| +if test "$libc_has_argp" = "false" ; then |
| + AC_MSG_WARN("libc does not have argp") |
| + AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"]) |
| + |
| + if test "$have_argp" = "false"; then |
| + AC_MSG_ERROR("no libargp found") |
| + else |
| + LIBS+=" -largp" |
| + fi |
| +fi |
| + |
| dnl ----------------- |
| dnl Configure options |
| dnl ----------------- |
