c60243e0a9
Release notes at http://fastd.readthedocs.org/en/v18/releases/v18.html First patch rebased, second patch removed (gone upstream). Using tarball and hashes instead of git now. Signed-off-by: Alexander Dahl <post@lespocky.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
70 lines
2.5 KiB
Diff
70 lines
2.5 KiB
Diff
From: Alexander Dahl <alex@netz39.de>
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Date: Wed, 28 Oct 2015 16:04:13 +0100
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Subject: [PATCH] cmake: use INTERPROCEDURAL_OPTIMIZATION target property
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Instead of hacking on compiler flags use the cmake way for handling
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interprocedural optimization. Tests showed cmake currently ignores this
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for gcc and clang, at least on Debian Wheezy and Jessie. This actually
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results in no interprocedural optimization for the moment. However it
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allows to compile fastd against a toolchain without LTO support, which
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was broken because of a hack included here for finding binutils.
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According to the upstream author of fastd the main reason for enabling
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LTO was binary size on an OpenWRT target for Freifunk Gluon, where they
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have very few space left on devices with only 4 MB flash memory.
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Signed-off-by: Alexander Dahl <post@lespocky.de>
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---
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cmake/checks.cmake | 14 --------------
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src/CMakeLists.txt | 9 +++++++++
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2 files changed, 9 insertions(+), 14 deletions(-)
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diff --git a/cmake/checks.cmake b/cmake/checks.cmake
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index 27c073f..8a671a1 100644
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--- a/cmake/checks.cmake
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+++ b/cmake/checks.cmake
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@@ -10,20 +10,6 @@ if(ARCH_X86 OR ARCH_X86_64)
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endif(ARCH_X86 OR ARCH_X86_64)
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-
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-if(ENABLE_LTO)
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- set(CFLAGS_LTO "-flto")
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- set(CFLAGS_NO_LTO "-fno-lto")
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-
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- check_c_compiler_flag("-fwhole-program" HAVE_FLAG_WHOLE_PROGRAM)
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- if(HAVE_FLAG_WHOLE_PROGRAM)
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- set(LDFLAGS_LTO "-flto -fwhole-program")
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- else(HAVE_FLAG_WHOLE_PROGRAM)
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- set(LDFLAGS_LTO "-flto")
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- endif(HAVE_FLAG_WHOLE_PROGRAM)
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-endif(ENABLE_LTO)
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-
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-
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check_c_source_compiles("
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#include <sys/types.h>
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#include <sys/socket.h>
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diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
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index 829b3ab..7612b40 100644
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--- a/src/CMakeLists.txt
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+++ b/src/CMakeLists.txt
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@@ -48,6 +48,15 @@ add_executable(fastd
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set_property(TARGET fastd PROPERTY COMPILE_FLAGS "${FASTD_CFLAGS}")
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set_property(TARGET fastd PROPERTY LINK_FLAGS "${PTHREAD_LDFLAGS} ${LIBUECC_LDFLAGS_OTHER} ${NACL_LDFLAGS_OTHER} ${JSON_C_LDFLAGS_OTHER} ${LDFLAGS_LTO}")
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set_property(TARGET fastd APPEND PROPERTY INCLUDE_DIRECTORIES ${LIBCAP_INCLUDE_DIR} ${NACL_INCLUDE_DIRS} ${JSON_C_INCLUDE_DIR})
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+if(ENABLE_LTO)
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+ set_target_properties(fastd PROPERTIES
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+ INTERPROCEDURAL_OPTIMIZATION ON
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+ )
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+else(ENABLE_LTO)
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+ set_target_properties(fastd PROPERTIES
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+ INTERPROCEDURAL_OPTIMIZATION OFF
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+ )
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+endif(ENABLE_LTO)
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target_link_libraries(fastd protocols methods ciphers macs ${RT_LIBRARY} ${LIBCAP_LIBRARY} ${LIBUECC_LIBRARIES} ${NACL_LIBRARIES} ${OPENSSL_CRYPTO_LIBRARY} ${JSON_C_LIBRARIES})
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add_dependencies(fastd version)
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--
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2.1.4
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