Compile internal SQLite library with -ffunction-sections #295
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When building with SQLITECPP_INTERNAL_SQLITE=ON the SQLite amalgamation source is used for generating the library. Using one big source file means all the library code will be put in a single section. When building statically linked executables the entire section will be linked even if a small portion of the library is actually used. This commit addresses this issue by setting the -ffunction-sections compiler option when building the library. As each function is placed in a section of its own the linker, when passed the --gc-sections, will throw away unused sections (functions) and reduce the executable size.
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When building with SQLITECPP_INTERNAL_SQLITE=ON the SQLite amalgamation
source is used for generating the library. Using one big source file
means all the library code will be put in a single section. When
building statically linked executables the entire section will be
linked even if a small portion of the library is actually used.
This commit addresses this issue by setting the -ffunction-sections
compiler option when building the library. As each function is placed in
a section of its own the linker, when passed the --gc-sections, will
throw away unused sections (functions) and reduce the executable size.