add -fcommon to CFLAGS to support recent gcc

Since GCC version 10, this code will not build unless `-fcommon` is
added to `CFLAGS`, see this comment in the associated upstream issue:

https://github.com/mikeryan/ems-flasher/issues/26#issuecomment-812134344

Since the current version of GCC in the Arch repos is 11.1.0, I think
this package should set this extra CFLAG when building.

1 files changed, 1 insertions, 0 deletions

diff --git a/PKGBUILD b/PKGBUILD
index bec576cd5d05..be2419f2084c 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -22,6 +22,7 @@ pkgver() {
 build() {
   cd "$srcdir"/ems-flasher
   ./config.sh --prefix /usr
+  sed -i '/^CFLAGS/ s/$/ -fcommon/' Makefile
   make
 }