Mk/Uses/cargo.mk: Encode more crate build dependencies

- Add build/lib dependencies, environment variables to ports using
  the backtrace-sys, freetype-sys, gettext-sys, onig_sys,
  thrussh-libsodium crates instead of doing this individually for
  every port.

- Add a DEV_WARNING when using libc versions < 0.2.37 to prevent
  instability of Rust applications on 12.0-CURRENT [1]

- Sort cargo-crates-licenses output

Reviewed by:	pizzamig, jbeich [1]
Differential Revision:	https://reviews.freebsd.org/D15463

1 files changed, 49 insertions, 5 deletions

diff --git a/Mk/Uses/cargo.mk b/Mk/Uses/cargo.mk
index e3439579639f..ab3951b25b71 100644
--- a/Mk/Uses/cargo.mk
+++ b/Mk/Uses/cargo.mk
@@ -117,23 +117,67 @@ CARGO_TEST_ARGS+=	--release
 CARGO_INSTALL_ARGS+=	--debug
 .endif
 
-.if ${CARGO_CRATES:Mlibgit2-sys-*}
+.if ${CARGO_CRATES:Mbacktrace-sys-[0-9]*}
+BUILD_DEPENDS+=	gmake:devel/gmake
+.endif
+
+.if ${CARGO_CRATES:Mcmake-[0-9]*}
+BUILD_DEPENDS+=	cmake:devel/cmake
+.endif
+
+.if ${CARGO_CRATES:Mfreetype-sys-[0-9]*}
+LIB_DEPENDS+=	libfreetype.so:print/freetype2
+.endif
+
+.if ${CARGO_CRATES:Mgettext-sys-[0-9]*}
+.include "${USESDIR}/gettext.mk"
+CARGO_ENV+=	GETTEXT_BIN_DIR=${LOCALBASE}/bin \
+		GETTEXT_INCLUDE_DIR=${LOCALBASE}/include \
+		GETTEXT_LIB_DIR=${LOCALBASE}/lib
+.endif
+
+.if ${CARGO_CRATES:Mlibc-[0-9]*}
+# FreeBSD 12.0 changed ABI: r318736 and r320043
+# https://github.com/rust-lang/libc/commit/78f93220d70e
+# https://github.com/rust-lang/libc/commit/969ad2b73cdc
+_libc_VER=	${CARGO_CRATES:Mlibc-[0-9]*:C/.*-//}
+. if ${_libc_VER:R:R} == 0 && (${_libc_VER:R:E} < 2 || ${_libc_VER:R:E} == 2 && ${_libc_VER:E} < 38)
+DEV_WARNING+=	"CARGO_CRATES=libc-0.2.37 or older maybe unstable on FreeBSD 12.0. Consider updating to the latest version."
+. endif
+.undef _libc_VER
+.endif
+
+.if ${CARGO_CRATES:Mlibgit2-sys-[0-9]*}
 # Use the system's libgit2 instead of building the bundled version
-LIB_DEPENDS+=	libgit2.so:devel/libgit2
 CARGO_ENV+=	LIBGIT2_SYS_USE_PKG_CONFIG=1
+LIB_DEPENDS+=	libgit2.so:devel/libgit2
 .endif
 
-.if ${CARGO_CRATES:Mopenssl-sys-*}
+.if ${CARGO_CRATES:Monig_sys-[0-9]*}
+# onig_sys always prefers the system library but will try to link
+# statically with it.  Since devel/oniguruma doesn't provide a static
+# library it'll link to libonig.so instead.  Strictly speaking setting
+# RUSTONIG_SYSTEM_LIBONIG is not necessary, but will force onig_sys to
+# always use the system's libonig as returned by `pkg-config oniguruma`.
+CARGO_ENV+=	RUSTONIG_SYSTEM_LIBONIG=1
+LIB_DEPENDS+=	libonig.so:devel/oniguruma
+.endif
+
+.if ${CARGO_CRATES:Mopenssl-sys-[0-9]*}
 # Make sure that openssl-sys can find the correct version of OpenSSL
 .include "${USESDIR}/ssl.mk"
 CARGO_ENV+=	OPENSSL_LIB_DIR=${OPENSSLLIB} \
 		OPENSSL_INCLUDE_DIR=${OPENSSLINC}
 .endif
 
-.if ${CARGO_CRATES:Mpkg-config-*}
+.if ${CARGO_CRATES:Mpkg-config-[0-9]*}
 .include "${USESDIR}/pkgconfig.mk"
 .endif
 
+.if ${CARGO_CRATES:Mthrussh-libsodium-[0-9]*}
+LIB_DEPENDS+=	libsodium.so:security/libsodium
+.endif
+
 _USES_extract+=	600:cargo-extract
 cargo-extract:
 # target for preparing crates directory.  It will put all crates in
@@ -222,5 +266,5 @@ cargo-crates-licenses: configure
 		| ${SED} \
 		-e 's@^${CARGO_VENDOR_DIR}/@@' \
 		-e 's@/Cargo.toml:license.*= *"@|@' \
-		-e 's@"$$@@g' | /usr/bin/column -t -s '|'
+		-e 's@"$$@@g' | sort | /usr/bin/column -t -s '|'
 .endif