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dropbear: honour CFLAGS while building bundled libtomcrypt/libtommath

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Felix Fietkau pointed out that bundled libtomcrypt/libtommath do funny stuff with CFLAGS.
fix this with checking environment variable OPENWRT_BUILD in both libs.
change in dropbear binary size is drastical: 221621 -> 164277.

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
This commit is contained in:
Konstantin Demin 2019-03-25 21:41:27 +03:00 committed by Hans Dedecker
parent 9c3bfd0906
commit ddf1a06326
1 changed files with 48 additions and 0 deletions
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48
package/network/services/dropbear/patches/901-bundled-libs-cflags.patch Normal file
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@ -0,0 +1,48 @@
--- a/libtomcrypt/makefile_include.mk
+++ b/libtomcrypt/makefile_include.mk
@@ -75,6 +75,13 @@ endif
LTC_CFLAGS += -Wno-type-limits
+ifdef OPENWRT_BUILD
+ ifeq (-Os,$(filter -Os,$(CFLAGS)))
+ LTC_CFLAGS += -DLTC_SMALL_CODE
+ endif
+else
+ ### ! OPENWRT_BUILD
+
ifdef LTC_DEBUG
$(info Debug build)
# compile for DEBUGGING (required for ccmalloc checking!!!)
@@ -102,6 +109,9 @@ endif
endif # COMPILE_SMALL
endif # COMPILE_DEBUG
+ ### ! OPENWRT_BUILD
+endif
+
ifneq ($(findstring clang,$(CC)),)
LTC_CFLAGS += -Wno-typedef-redefinition -Wno-tautological-compare -Wno-builtin-requires-header -Wno-missing-field-initializers
--- a/libtommath/makefile_include.mk
+++ b/libtommath/makefile_include.mk
@@ -37,6 +37,9 @@ CFLAGS += -Wsystem-headers -Wdeclaration
CFLAGS += -Wstrict-prototypes -Wpointer-arith
endif
+ifndef OPENWRT_BUILD
+ ### ! OPENWRT_BUILD
+
ifdef COMPILE_DEBUG
#debug
CFLAGS += -g3
@@ -58,6 +61,9 @@ endif
endif # COMPILE_SIZE
endif # COMPILE_DEBUG
+ ### ! OPENWRT_BUILD
+endif
+
ifneq ($(findstring clang,$(CC)),)
CFLAGS += -Wno-typedef-redefinition -Wno-tautological-compare -Wno-builtin-requires-header
endif