diff --git a/package/alsamixergui/0002-configure-fix-detection-of-fltk-libs.patch b/package/alsamixergui/0002-configure-fix-detection-of-fltk-libs.patch
new file mode 100644
index 0000000000..cc72d33bee
--- /dev/null
+++ b/package/alsamixergui/0002-configure-fix-detection-of-fltk-libs.patch
@@ -0,0 +1,53 @@
+From c154195fa161575363280aac9e928b7225f0de9e Mon Sep 17 00:00:00 2001
+From: "Yann E. MORIN" <yann.morin.1998@free.fr>
+Date: Sun, 29 Dec 2019 17:42:13 +0100
+Subject: [PATCH] configure: fix detection of fltk libs
+
+Chaining calls to AC_CHECK_LIB one in the other, breaks the configure
+script, because some internal functions (e.g. ac_fn_c_try_link) would
+not be defined before they are needed, leading the build to fail as
+thus:
+
+    checking for snd_tplg_new in -latopology... ./configure: line 4630:
+    ac_fn_c_try_link: command not found
+    no
+    configure: error: No linkable libatopology was found.
+
+Using AC_CHECK_LIB() in sequence (i.e. one after the other) and
+memorising the result is not trivial: AC_CHECK_LIB() implements a
+ddefault action-if-found that append to LIBS, but not if the user
+ptrovides their own action-if-found.
+
+Instead, AC_SEARH_LIBS() always append to LIBS, *and* run the
+user-provided action.
+
+So, we switch to AC_SEARCH_LIBS() and memorise the result for each
+test, to eventually test if ether worked.
+
+Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
+---
+ configure.in | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/configure.in b/configure.in
+index 9307cc2..55f6864 100644
+--- a/configure.in
++++ b/configure.in
+@@ -11,10 +11,10 @@ AC_PROG_INSTALL
+ AC_PROG_LN_S
+ 
+ dnl Checks for libraries.
+-AC_CHECK_LIB(fltk,numericsort,,
+-AC_CHECK_LIB(fltk,fl_numericsort,,
+-AC_MSG_ERROR("missing fltk"))
+-)
++has_fltk=false
++AC_SEARCH_LIBS(numericsort,fltk,has_fltk=true)
++AC_SEARCH_LIBS(fl_numericsort,fltk,has_fltk=true)
++AS_IF(test "${has_fltk}" = "false", AC_MSG_ERROR("missing fltk"))
+ AM_PATH_ALSA(0.9.0)
+ 
+ dnl Checks for header files.
+-- 
+2.20.1
+
diff --git a/package/alsamixergui/alsamixergui.mk b/package/alsamixergui/alsamixergui.mk
index 24e2497f3b..8bf3f8e073 100644
--- a/package/alsamixergui/alsamixergui.mk
+++ b/package/alsamixergui/alsamixergui.mk
@@ -11,11 +11,6 @@ ALSAMIXERGUI_LICENSE = GPL-2.0+
 ALSAMIXERGUI_LICENSE_FILES = debian/copyright
 ALSAMIXERGUI_AUTORECONF = YES
 
-ALSAMIXERGUI_CONF_ENV = \
-	ac_cv_lib_fltk_numericsort=yes \
-	ac_cv_lib_fltk_fl_numericsort=yes \
-	ac_cv_lib_asound_snd_ctl_open=yes
-
 ALSAMIXERGUI_DEPENDENCIES = fltk alsa-lib
 
 $(eval $(autotools-package))