package/linux-pam: needs gcc >= 4.9

linux-pam raises the following build failure with gcc 4.8 since bump to
version 1.5.3 in commit f8147e27cdac8f998ec6644a09ce4e8d62b6433c and
https://github.com/linux-pam/linux-pam/commit/8f9816b57e3a475fc2d2cbb106c188b778098f85:

pam_access.c: In function 'pam_sm_authenticate':
pam_access.c:1084:13: error: 'for' loop initial declarations are only allowed in C99 mode
             for (int i = 0; filename_list[i] != NULL; i++) {
             ^

Those build failures could be fixed by adding -std=c99 but then the
build will fails because stdadtomic.h is mandatory since
https://github.com/linux-pam/linux-pam/commit/a35e092e24ee7632346a0e1b4a203c04d4cd2c62

Fixes:
 - http://autobuild.buildroot.org/results/9b2ba987d2c873f4a7caea72707acb655279d16b

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-pam/Config.in

@@ -4,6 +4,7 @@ config BR2_PACKAGE_LINUX_PAM
 	depends on BR2_USE_WCHAR
 	depends on !BR2_STATIC_LIBS
 	depends on BR2_USE_MMU # fork()
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C11/stdatomic.h
 	select BR2_PACKAGE_FLEX
 	help
 	  A Security Framework that Provides Authentication for
@@ -11,7 +12,7 @@ config BR2_PACKAGE_LINUX_PAM
 
 	  http://linux-pam.org
 
-comment "linux-pam needs a toolchain w/ wchar, locale, dynamic library"
+comment "linux-pam needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on !BR2_ENABLE_LOCALE || !BR2_USE_WCHAR \
-		|| BR2_STATIC_LIBS
+		|| BR2_STATIC_LIBS || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9

package/nodm/Config.in

@@ -4,6 +4,7 @@ config BR2_PACKAGE_NODM
 	depends on (BR2_ENABLE_LOCALE && BR2_USE_WCHAR) # linux-pam
 	depends on !BR2_STATIC_LIBS # linux-pam
 	depends on BR2_USE_MMU # linux-pam
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # linux-pam
 	select BR2_PACKAGE_XLIB_LIBX11
 	select BR2_PACKAGE_LINUX_PAM
 	help
@@ -17,7 +18,7 @@ config BR2_PACKAGE_NODM
 
 	  https://github.com/spanezz/nodm/
 
-comment "nodm needs a toolchain w/ wchar, locale, dynamic library"
+comment "nodm needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4.9"
 	depends on BR2_PACKAGE_XORG7
 	depends on !(BR2_ENABLE_LOCALE && BR2_USE_WCHAR) \
-		|| BR2_STATIC_LIBS
+		|| BR2_STATIC_LIBS || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9

package/openvmtools/Config.in

@@ -32,13 +32,14 @@ config BR2_PACKAGE_OPENVMTOOLS_PAM
 	bool "PAM support"
 	# linux-pam needs locale and wchar, but we already have this
 	# dependency on the main symbol, above.
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # linux-pam
 	depends on !BR2_STATIC_LIBS
 	select BR2_PACKAGE_LINUX_PAM
 	help
 	  Support for PAM in openvmtools
 
-comment "PAM support needs a toolchain w/ dynamic library"
-	depends on BR2_STATIC_LIBS
+comment "PAM support needs a toolchain w/ dynamic library, gcc >= 4.9"
+	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 
 config BR2_PACKAGE_OPENVMTOOLS_RESOLUTIONKMS
 	bool "resolutionkms support"

package/php-pam/Config.in

@@ -4,13 +4,14 @@ config BR2_PACKAGE_PHP_PAM
 	depends on BR2_USE_WCHAR # linux-pam
 	depends on BR2_USE_MMU # linux-pam
 	depends on !BR2_STATIC_LIBS # linux-pam
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # linux-pam
 	select BR2_PACKAGE_LINUX_PAM
 	help
 	  PHP PAM (Pluggable Authentication Modules) integration
 
 	  https://pecl.php.net/package/PAM
 
-comment "php-pam needs a toolchain w/ wchar, locale, dynamic library"
+comment "php-pam needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on !BR2_ENABLE_LOCALE || !BR2_USE_WCHAR \
-		|| BR2_STATIC_LIBS
+		|| BR2_STATIC_LIBS || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9

package/rsh-redone/Config.in

@@ -19,11 +19,13 @@ config BR2_PACKAGE_RSH_REDONE_RLOGIND
 	depends on BR2_ENABLE_LOCALE && BR2_USE_WCHAR
 	depends on !BR2_TOOLCHAIN_USES_MUSL
 	depends on BR2_USE_MMU # linux-pam
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # linux-pam
 	select BR2_PACKAGE_LINUX_PAM
 
-comment "rlogind needs a uClibc or glibc toolchain w/ wchar, locale, dynamic library"
+comment "rlogind needs a uClibc or glibc toolchain w/ wchar, locale, dynamic library, gcc >= 4.9"
 	depends on !(BR2_ENABLE_LOCALE && BR2_USE_WCHAR) \
-		|| BR2_STATIC_LIBS || BR2_TOOLCHAIN_USES_MUSL
+		|| BR2_STATIC_LIBS || BR2_TOOLCHAIN_USES_MUSL || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 
 config BR2_PACKAGE_RSH_REDONE_RSH
 	bool "rsh"
@@ -33,10 +35,11 @@ config BR2_PACKAGE_RSH_REDONE_RSHD
 	depends on BR2_ENABLE_LOCALE && BR2_USE_WCHAR
 	depends on !BR2_STATIC_LIBS
 	depends on BR2_USE_MMU # linux-pam
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # linux-pam
 	select BR2_PACKAGE_LINUX_PAM
 
-comment "rshd needs a toolchain w/ wchar, locale, dynamic library"
+comment "rshd needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4.9"
 	depends on !(BR2_ENABLE_LOCALE && BR2_USE_WCHAR) \
-		|| BR2_STATIC_LIBS
+		|| BR2_STATIC_LIBS || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 
 endif

package/shadow/Config.in

@@ -20,14 +20,16 @@ config BR2_PACKAGE_SHADOW_ACCOUNT_TOOLS_SETUID
 	depends on BR2_ENABLE_LOCALE  # linux-pam
 	depends on BR2_USE_WCHAR  # linux-pam
 	depends on !BR2_STATIC_LIBS  # linux-pam
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # linux-pam
 	select BR2_PACKAGE_LINUX_PAM
 	help
 	  Install the user and group management tools (e.g. groupadd)
 	  with setuid and authenticate the callers via PAM.
 
-comment "account-tools-setuid needs a toolchain w/ dynamic library, wchar, locale"
+comment "account-tools-setuid needs a toolchain w/ dynamic library, wchar, locale, gcc >= 4.9"
 	depends on BR2_USE_MMU
-	depends on BR2_STATIC_LIBS || !BR2_USE_WCHAR || !BR2_ENABLE_LOCALE
+	depends on BR2_STATIC_LIBS || !BR2_USE_WCHAR || \
+		!BR2_ENABLE_LOCALE || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 
 config BR2_PACKAGE_SHADOW_UTMPX
 	bool "utmpx"