package/p7zip: add 7za support

Add 7za stand-alone executable as 7zr is a "light-version" of 7za that
only handles 7z archives and cannot handle encrypted archives.

Fixes:
 - https://bugs.buildroot.org/show_bug.cgi?id=14266

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/p7zip/Config.in

@@ -12,6 +12,28 @@ config BR2_PACKAGE_P7ZIP
 
 	  http://sourceforge.net/projects/p7zip
 
+if BR2_PACKAGE_P7ZIP
+
+choice
+	prompt "p7zip binary"
+	default BR2_PACKAGE_P7ZIP_7ZR
+
+config BR2_PACKAGE_P7ZIP_7ZA
+	bool "7za"
+	help
+	  Stand-alone executable that handles fewer archive formats
+	  than 7z
+
+config BR2_PACKAGE_P7ZIP_7ZR
+	bool "7zr"
+	help
+	  Stand-alone executable which is a "light-version" of 7za that
+	  only handles 7z archives and cannot handle encrypted archives
+
+endchoice
+
+endif
+
 comment "p7zip needs a toolchain w/ threads, wchar, C++"
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR || !BR2_INSTALL_LIBSTDCPP

package/p7zip/p7zip.mk

@@ -10,6 +10,12 @@ P7ZIP_LICENSE = LGPL-2.1+ with unRAR restriction
 P7ZIP_LICENSE_FILES = DOC/License.txt
 P7ZIP_CPE_ID_VENDOR = 7-zip
 
+ifeq ($(BR2_PACKAGE_P7ZIP_7ZA),y)
+P7ZIP_TARGET = 7za
+else
+P7ZIP_TARGET = 7zr
+endif
+
 # p7zip buildsystem is a mess: it plays dirty tricks with CFLAGS and
 # CXXFLAGS, so we can't pass them. Instead, it accepts ALLFLAGS_C
 # and ALLFLAGS_CPP as variables to pass the CFLAGS and CXXFLAGS.
@@ -17,11 +23,12 @@ define P7ZIP_BUILD_CMDS
 	$(TARGET_MAKE_ENV) $(MAKE) CC="$(TARGET_CC)" ALLFLAGS_C="$(TARGET_CFLAGS)" \
 		CXX="$(TARGET_CXX)" ALLFLAGS_CPP="$(TARGET_CXXFLAGS)" \
 		LDFLAGS="$(TARGET_LDFLAGS)" \
-		-C $(@D) 7zr
+		-C $(@D) $(P7ZIP_TARGET)
 endef
 
 define P7ZIP_INSTALL_TARGET_CMDS
-	$(INSTALL) -D -m 0755 $(@D)/bin/7zr $(TARGET_DIR)/usr/bin/7zr
+	$(INSTALL) -D -m 0755 $(@D)/bin/$(P7ZIP_TARGET) \
+		$(TARGET_DIR)/usr/bin/$(P7ZIP_TARGET)
 endef
 
 $(eval $(generic-package))