docs/manual: document gcc version dependencies

This commit updates the Buildroot manual to document how to detail the
gcc version dependencies in Config.in comments of packages, like we do
for kernel headers version.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

diff --git a/docs/manual/adding-packages-directory.txt b/docs/manual/adding-packages-directory.txt
index 8f585d49760447d1978c5bb9efd65d70ce5208aa..b66e44775620ee3602adc4abf1d5bf8bab2888de 100644 (file)
--- a/docs/manual/adding-packages-directory.txt
+++ b/docs/manual/adding-packages-directory.txt
@@ -277,6 +277,12 @@ use in the comment.
 ** Comment string: +headers >= X.Y+ and/or `headers <= X.Y` (replace
    +X.Y+ with the proper version)
 
+* GCC version
+** Dependency symbol: +BR2_TOOLCHAIN_GCC_AT_LEAST_X_Y+, (replace
+   +X_Y+ with the proper version, see +toolchain/toolchain-common.in+)
+** Comment string: +gcc >= X.Y+ and/or `gcc <= X.Y` (replace
+   +X.Y+ with the proper version)
+
 * C library
 ** Dependency symbol: +BR2_TOOLCHAIN_USES_GLIBC+,
    +BR2_TOOLCHAIN_USES_MUSL+, +BR2_TOOLCHAIN_USES_UCLIBC+