makepkg: add option to clear buildflags

Add the "buildflags" option, which is useful in its negative form
for disabling CFLAGS, CXXFLAGS and LDFLAGS when building a package.
This is useful when determining of one of these flags is causing
an issue with a package.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/doc/PKGBUILD.5.txt b/doc/PKGBUILD.5.txt
index 2ccf0b2e..e6c4a1fb 100644
--- a/doc/PKGBUILD.5.txt
+++ b/doc/PKGBUILD.5.txt
@@ -233,6 +233,12 @@ name. The syntax is: `source=('filename::url')`.
 		form `!distcc` with select packages that have problems building
 		with distcc.
 
+	*buildflags*;;
+		Allow the use of user-specific buildflags (CFLAGS, CXXFLAGS, LDFLAGS)
+		during build as specified in linkman:makepkg.conf[5]. More useful in
+		its negative form `!buildflags` with select packages that have problems
+		building with custom buildflags.
+
 	*makeflags*;;
 		Allow the use of user-specific makeflags during build as specified
 		in linkman:makepkg.conf[5]. More useful in its negative form