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gcc: enable compilation with gcc 7.x

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Defining _GLIBCXX_INCLUDE_NEXT_C_HEADERS instructs gcc 7.x libstdc++ to
include the system's stdlib.h and math.h, and not their own.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

(cherry picked from commit 054d5273cb)
This commit is contained in:
Eneas U de Queiroz 2018-07-16 16:46:06 +03:00 committed by Hannu Nyman
parent 05b9aceb00
commit 787a5f9c55
1 changed files with 4 additions and 1 deletions
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5
devel/gcc/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=gcc
PKG_VERSION:=5.4.0
PKG_RELEASE:=2
PKG_RELEASE:=3
PKG_SOURCE_URL:=@GNU/gcc/gcc-$(PKG_VERSION)
PKG_HASH:=608df76dec2d34de6558249d8af4cbee21eceddbcb580d666f7a5a583ca3303a
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
@ -22,6 +22,7 @@ include $(INCLUDE_DIR)/package.mk
TARGET_LANGUAGES:="c,c++"
BUGURL=https://dev.openwrt.org/
PKGVERSION=OpenWrt GCC $(PKG_VERSION)
TARGET_CPPFLAGS += -D_GLIBCXX_INCLUDE_NEXT_C_HEADERS
# not using sstrip here as this fucks up the .so's somehow
STRIP:=$(TOOLCHAIN_DIR)/bin/$(TARGET_CROSS)strip
@ -92,6 +93,8 @@ define Build/Prepare
cp $(PKG_BUILD_DIR)/config.sub $(PKG_BUILD_DIR)/mpc/
endef
TARGET_CXX += -std=gnu++03
CONFIGURE_ARGS += CXX_FOR_TARGET="$(TARGET_CXX)" CXXFLAGS_FOR_TARGET="-g -O2 -D_GLIBCXX_INCLUDE_NEXT_C_HEADERS"
define Build/Configure
(cd $(PKG_BUILD_DIR); rm -f config.cache; \