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cmake: Fix the build on Unix with source files checked out on Windows

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The issue is that, by default, Git for Windows checks out text files
with CRLF line endings. This is a problem for awk, which is expecting
Unix-style LF line endings. When cloning on Windows and attempting to
compile on WSL, Mingw or Cygwin, there may be an error from awk.

The fix is to leverage CMake's ability to configure a file and perform
EOL conversions. We copy the awk scripts from the source directory to
the build directory. This portable method ensures they have LF endings,
and the build logic is updated to use the build directory version.

Intentionally avoiding .gitattributes to avoid setting precedent.

Co-authored-by: Christopher Sean Morrison <brlcad@gmail.com>
Co-authored-by: Cosmin Truta <ctruta@gmail.com>
Signed-off-by: Cosmin Truta <ctruta@gmail.com>
This commit is contained in:
Christopher Sean Morrison
2022-03-10 01:08:09 -05:00
committed by Cosmin Truta
parent 8a354b41e9
commit 840af2eda6
2 changed files with 20 additions and 4 deletions
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3
scripts/genchk.cmake.in
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@@ -10,6 +10,7 @@
# Variables substituted from CMakeLists.txt
set(SRCDIR "@CMAKE_CURRENT_SOURCE_DIR@")
set(BINDIR "@CMAKE_CURRENT_BINARY_DIR@")
set(AWK "@AWK@")
@@ -23,7 +24,7 @@ get_filename_component(OUTPUTDIR "${OUTPUT}" PATH)
if("${INPUTEXT}" STREQUAL ".out" AND "${OUTPUTEXT}" STREQUAL ".chk")
# Generate .chk from .out with awk (generic)
file(REMOVE "${OUTPUT}" "${OUTPUTDIR}/${OUTPUTBASE}.new")
execute_process(COMMAND "${AWK}" -f "${SRCDIR}/scripts/checksym.awk"
execute_process(COMMAND "${AWK}" -f "${BINDIR}/scripts/checksym.awk"
"${SRCDIR}/scripts/${INPUTBASE}.def"
"of=${OUTPUTDIR}/${OUTPUTBASE}.new"
"${INPUT}"