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From 1832d5ff905b16435efa64e458e2ca2f656f0ab5 Mon Sep 17 00:00:00 2001
From: Oliver Freyermuth <o.freyermuth@googlemail.com>
Date: Sun, 19 Dec 2021 16:30:27 +0100
Subject: [PATCH] configure: Add musl compatibility (external argp).
---
configure.ac | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/configure.ac b/configure.ac
index 687d4d4..9f708cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -109,6 +109,26 @@ AC_CHECK_LIB([rt], [shm_open], [LIBRT=-lrt], [
])
AC_SUBST([LIBRT])
+# argp_parse, needed externally from libargp / argp_standalone e.g. with musl.
+# First, check if available in used libc out of the box.
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <argp.h>],
+ [int argc=1; char **argv=NULL; argp_parse(0,argc,argv,0,0,0); return 0;]
+ )],
+ [libc_provides_argp="true"],
+ [libc_provides_argp="false"]
+)
+# If libc doesn't provide argp, test for libargp
+if test "$libc_provides_argp" = "false" ; then
+ AC_MSG_WARN("libc does not provide argp")
+ AC_CHECK_LIB([argp], [argp_parse], [have_largp="true"], [have_largp="false"])
+ if test "$have_largp" = "false"; then
+ AC_MSG_ERROR([*** argp functions not found - install libargp or argp_standalone])
+ else
+ CH_RUN_LIBS="-largp $CH_RUN_LIBS"
+ fi
+fi
## Options
--
2.32.0
|
