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cmake: Add a module to find if obstack is in a separate library

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The main musl libc, used in Alpine Linux, doesn't have argp support, so
check if it is somewhere else, maybe in the musl-obstack package.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2021-08-13 14:58:14 -03:00
parent 5244b47a88
commit 739bc50b90
2 changed files with 42 additions and 0 deletions
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@ -16,6 +16,7 @@ dwarves_reorganize.c
dwarves_reorganize.h
cmake/modules/FindDWARF.cmake
cmake/modules/Findargp.cmake
cmake/modules/Findobstack.cmake
CMakeLists.txt
codiff.c
ctracer.c

41
cmake/modules/Findobstack.cmake Normal file
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@ -0,0 +1,41 @@
# - Find obstack
# Figure out if obstack is in glibc or if it musl-obstack or elsewhere
#
# OBSTACK_LIBRARY - Library to use obstack
# OBSTACK_FOUND - True if found.
message(STATUS "Checking availability of obstack library")
INCLUDE(CheckLibraryExists)
if (OBSTACK_LIBRARY)
# Already in cache, be silent
set(OBSTACK_FIND_QUIETLY TRUE)
endif (OBSTACK_LIBRARY)
find_library(OBSTACK_LIBRARY
NAMES obstack
PATHS /usr/lib /usr/local/lib /usr/lib64 /usr/local/lib64 ~/usr/local/lib ~/usr/local/lib64
)
if (OBSTACK_LIBRARY)
set(OBSTACK_FOUND TRUE)
set(OBSTACK_LIBRARY ${OBSTACK_LIBRARY})
set(CMAKE_REQUIRED_LIBRARIES ${OBSTACK_LIBRARY})
else (OBSTACK_LIBRARY)
set(OBSTACK_LIBRARY "")
endif (OBSTACK_LIBRARY)
if (OBSTACK_FOUND)
if (NOT OBSTACK_FIND_QUIETLY)
message(STATUS "Found obstack library: ${OBSTACK_LIBRARY}")
endif (NOT OBSTACK_FIND_QUIETLY)
else (OBSTACK_FOUND)
set(OBSTACK_FOUND TRUE)
message(STATUS "Assuming obstack is in libc")
endif (OBSTACK_FOUND)
mark_as_advanced(OBSTACK_LIBRARY)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.cmake ${CMAKE_CURRENT_SOURCE_DIR}/config.h)
message(STATUS "Checking availability of obstack library - done")