From 526b2e8c5367ff0e9822496995e915ee7c90a634 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Wed, 5 Feb 2020 13:54:44 +0100
Subject: [PATCH] build: Ensure that gcov symbols are exposed when needed

When coverage is enabled, we need to expose the __gcov_* symbols in the
binaries and libraries or we won't get any coverage report for them.
---
 pam/pam_fprintd.ver | 1 +
 src/meson.build     | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/pam/pam_fprintd.ver b/pam/pam_fprintd.ver
index a8d3722..e0c0181 100644
--- a/pam/pam_fprintd.ver
+++ b/pam/pam_fprintd.ver
@@ -1,6 +1,7 @@
 {
 global:
 	pam_*;
+	__gcov_*;
 local:
 	*;
 };
diff --git a/src/meson.build b/src/meson.build
index 4be29ff..3a36c48 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -53,6 +53,8 @@ fprintd_deps = declare_dependency(
     ],
 )
 
+symbol_visibility = get_option('b_coverage') ? 'default' : 'hidden'
+
 libfprintd_private = static_library('fprintd-private',
     sources: [
         'device.c',
@@ -62,7 +64,7 @@ libfprintd_private = static_library('fprintd-private',
         fprintd_marshal,
     ],
     dependencies: fprintd_deps,
-    gnu_symbol_visibility: 'hidden',
+    gnu_symbol_visibility: symbol_visibility,
 )
 
 fprintd = executable('fprintd',
@@ -75,7 +77,7 @@ fprintd = executable('fprintd',
     ],
     dependencies: fprintd_deps,
     link_with: libfprintd_private,
-    gnu_symbol_visibility: 'hidden',
+    gnu_symbol_visibility: symbol_visibility,
     install: true,
     install_dir: fprintd_installdir,
 )