mail-filter/opendkim: Fix build on musl

The build of libvbr, which is included in opendkim and enabled by default in the ebuild, fails on musl because the '__P' macro is not defined. glibc defines it along with '__PMT' in cdefs.h, but notes that they are kept "only because some other projects expect the macros to be defined". Since cdefs.h is not included in musl, patch vbr.h to include this particular macro definition. See also: trusteddomainproject/OpenDKIM#74 Closes: gentoo#16140 Signed-off-by: Wynn Wolf Arbor <[email protected]> Package-Manager: Portage-2.3.99, Repoman-2.3.22 Signed-off-by: Michael Orlitzky <[email protected]>
admnd · Jun 10, 2020 · 79567f9 · 79567f9
1 parent 5de485b
commit 79567f9
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diff --git a/mail-filter/opendkim/files/opendkim-2.10.3-define-P-macro-in-libvbr.patch b/mail-filter/opendkim/files/opendkim-2.10.3-define-P-macro-in-libvbr.patch
@@ -0,0 +1,40 @@
+From 50a91575cee8d08682f090d2d6bdb4806eccfbcd Mon Sep 17 00:00:00 2001
+From: Wynn Wolf Arbor <[email protected]>
+Date: Wed, 10 Jun 2020 09:37:03 +0200
+Subject: [PATCH] Define __P() macro in libvbr
+
+Definitions for this macro have been added throughout the codebase in
+commits 91e7407d, 705948fd, 227fa252, 842c1733, and b730bdc0, but one
+was still missing from libvbr. glibc contains a definition for legacy
+reasons, but other libcs might not. Particularly, the musl libc does not
+contain it, leading to build errors when enabling support for VBR.
+
+Add a definition for __P() to vbr.h to fix this.
+---
+ libvbr/vbr.h | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/libvbr/vbr.h b/libvbr/vbr.h
+index 4bef1f36..3bcb9212 100644
+--- a/libvbr/vbr.h
++++ b/libvbr/vbr.h
+@@ -12,6 +12,16 @@
+ /* system includes */
+ #include <sys/types.h>
+
++#ifdef __STDC__
++# ifndef __P
++#  define __P(x)  x
++# endif /* ! __P */
++#else /* __STDC__ */
++# ifndef __P
++#  define __P(x)  ()
++# endif /* ! __P */
++#endif /* __STDC__ */
++
+ /* strings */
+ #define	VBR_ALL			"all"
+ #define	VBR_INFOHEADER		"VBR-Info"
+--
+2.27.0
+
diff --git a/mail-filter/opendkim/opendkim-2.10.3-r18.ebuild b/mail-filter/opendkim/opendkim-2.10.3-r18.ebuild
@@ -51,6 +51,7 @@ PATCHES=(
 	"${FILESDIR}/${P}-openrc.patch"
 	"${FILESDIR}/${P}-openssl-1.1.1.patch.r2"
 	"${FILESDIR}/${P}-lua-pkgconfig.patch"
+	"${FILESDIR}/${P}-define-P-macro-in-libvbr.patch"
 )
 
 src_prepare() {